What is the downside of permanently disabling or evening uninstalling KVM_Intel?

Virtual Box will not work if it is running.

Adding a custom keyboard as an input source in the settings app caused gnome shell to crash. Further attempts to log in failed (initially a password was accepted but the log in didn't complete and I was returned to the user selection screen. After the first attempt the password text-input box did not accept any keystrokes and the only way to escape was by rebooting)

What is the cause of this crash and how can I repair my system?

I recently encountered an issue with my computer’s drivers, primarily relating to wifi detection. I didn’t actively apply any updates or anything, just left my computer running idle for 5 mins and came back to a black screen requiring a reboot. Upon restart, I noticed my computer no longer detects a wifi adapter.

I later realized other issues, for example I cannot change the screen brightness, the audio dial is labeled “dummy output”, and there was suddenly a dependency issue (confirmed with sudo apt-get check) that my linux-tools-6.14.0-37-generic depended on (but could not find) linux-tools-6.14.0- 37.

Note that I cannot connect to the internet in any manner from my laptop, ip link show reveals only a lo connection but no eth0 or anything else. When I run sudo lshw -c network I see network UNCLAIMED for two connections, the network controller and the ethernet controller. Here’s an excerpt: network UNCLAIMED description: Ethernet controller product: RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd.

I tried to fix this dependency issue by downloading linux-tools-6.14.0-37 from ubuntuupdates.org (note the only “linux-tools-6.14.0-37” file I could fine was listed for 25.04 Plucky not 24.04 Noble but it seemed to work nonetheless) and then running sudo dpkg -i <file.deb>, after which the dependency issue seems to be resolved. I also tried reinstalling the linux-modules-extra drivers following the advice of 22.04.1 Network Unclaimed (this fixed a similar issue I had a month previously), but saw no changes after rebooting.

I have run the wireless-info script and put the output in https://pastebin.com/1c7RZYKL.

##### release ###########################
 
Distributor ID: Ubuntu
Description:    Ubuntu 24.04.3 LTS
Release:    24.04
Codename:   noble
 
##### kernel ############################
 
Linux 6.14.0-37-generic #37~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Nov 20 10:25:38 UTC 2 x86_64 x86_64 x86_64 GNU/Linux
 
Parameters: ro, amdgpu.backlight=0, quiet, splash, loglevel=3, vt.handoff=7
 
##### desktop ###########################
 
Ubuntu
 
##### lspci #############################
 
00:14.3 Network controller [0280]: Intel Corporation Comet Lake PCH CNVi WiFi [8086:06f0]
    DeviceName: Onboard - Ethernet
    Subsystem: Intel Corporation Dual Band Wi-Fi 6(802.11ax) AX201 160MHz 2x2 [Harrison Peak] [8086:0074]
    Kernel modules: iwlwifi
 
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 15)
    Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1462:12a7]
    Kernel modules: r8169
 
##### lsusb #############################
 
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 004: ID 1038:1122 SteelSeries ApS SteelSeries KLC
Bus 001 Device 005: ID 5986:211c Bison Electronics Inc. HD Webcam
Bus 001 Device 006: ID 8087:0026 Intel Corp. AX201 Bluetooth
Bus 001 Device 011: ID 18d1:4ee1 Google Inc. Nexus/Pixel Device (MTP)
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 
##### PCMCIA card info ##################
 
##### rfkill ############################
 
##### secure boot #######################
 
SecureBoot disabled
 
##### lsmod #############################
 
wmi                    28672  1 video
 
##### dkms #############################
 
./wireless-info: line 206: dkms: command not found
 
##### interfaces ########################
 
##### ifconfig ##########################
 
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback <MAC address> brd <MAC address>
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host noprefixroute 
       valid_lft forever preferred_lft forever
 
##### iwconfig ##########################
 
lo        no wireless extensions.
 
##### route #############################
 
##### resolv.conf #######################
 
[777 root '/etc/resolv.conf' -> '../run/systemd/resolve/stub-resolv.conf']
 
nameserver 127.0.0.53
options edns0 trust-ad
search .
 
##### network managers ##################
 
Installed:
 
    NetworkManager
 
Running:
 
root        1582       1  0 13:13 ?        00:00:00 /usr/sbin/NetworkManager --no-daemon
 
##### NetworkManager info ###############
 
##### NetworkManager.state ##############
 
[main]
NetworkingEnabled=true
WirelessEnabled=true
WWANEnabled=true
 
##### NetworkManager config #############
 
[[/etc/NetworkManager/conf.d/default-wifi-powersave-on.conf]]
[connection]
wifi.powersave = 3
 
[[/etc/NetworkManager/NetworkManager.conf]]
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
 
[[/usr/lib/NetworkManager/conf.d/10-dns-resolved.conf]]
[main]
dns=systemd-resolved
 
[[/usr/lib/NetworkManager/conf.d/10-globally-managed-devices.conf]]
[keyfile]
unmanaged-devices=*,except:type:wifi,except:type:gsm,except:type:cdma
 
[[/usr/lib/NetworkManager/conf.d/20-connectivity-ubuntu.conf]]
[connectivity]
uri=http://connectivity-check.ubuntu.com./
 
[[/usr/lib/NetworkManager/conf.d/no-mac-addr-change.conf]]
[device-31-mac-addr-change]
match-device=driver:eagle_sdio,driver:wl
wifi.scan-rand-mac-address=no
 
##### NetworkManager profiles ###########
 
##### Netplan config ####################
 
grep: /etc/netplan/90-NM-0743eca1-812b-4ce3-b8e1-6ba37143d0cb.yaml: Permission denied
grep: /etc/netplan/90-NM-127f2d2e-6a85-4945-ac65-5b70d4e371f6.yaml: Permission denied
grep: /etc/netplan/90-NM-29d5cf0a-c47e-44f3-997c-f4dc3f16f10a.yaml: Permission denied
grep: /etc/netplan/90-NM-39d0880f-456d-42c2-a8e4-a8e4c4fa5e58.yaml: Permission denied
grep: /etc/netplan/90-NM-572dc3d8-4ab7-4e89-8cb0-fb54caf48ce1.yaml: Permission denied
grep: /etc/netplan/90-NM-6bbcb812-4cff-4f4c-b387-14e2b79fe509.yaml: Permission denied
grep: /etc/netplan/90-NM-7ac69f4c-17ca-4321-985d-1ac22e009a03.yaml: Permission denied
grep: /etc/netplan/90-NM-7d2e5125-e7ab-429e-93b6-b68a637b58df.yaml: Permission denied
grep: /etc/netplan/90-NM-8095af92-6c55-4496-a5d6-d3dfdc36239b.yaml: Permission denied
grep: /etc/netplan/90-NM-84f2977c-66d3-4875-b531-449cd88f3ba1.yaml: Permission denied
grep: /etc/netplan/90-NM-9cf857a5-c76f-4d79-a857-1e1b17c09c9e.yaml: Permission denied
grep: /etc/netplan/90-NM-a654e30a-80be-4d7a-bf3d-6d7022ef3b6b.yaml: Permission denied
grep: /etc/netplan/90-NM-af6a8520-d94a-469f-9398-2262f78640dd.yaml: Permission denied
grep: /etc/netplan/90-NM-f4d6fa90-fef6-401c-b638-544e37d5100e.yaml: Permission denied
grep: /etc/netplan/90-NM-f7b8d3ef-b3f6-4215-9ec8-cd20eb93e642.yaml: Permission denied
grep: /lib/netplan/00-network-manager-all.yaml: Permission denied
 
##### iw reg get ########################
 
'iw' is not installed (package "iw").
 
##### iwlist channels ###################
 
lo        no frequency information.
 
##### iwlist scan #######################
 
lo        Interface doesn't support scanning.
 
##### module infos ######################
 
##### module parameters #################
 
##### /etc/modules ######################
 
##### modprobe options ##################
 
[/etc/modprobe.d/amd64-microcode-blacklist.conf]
blacklist microcode
 
[/etc/modprobe.d/blacklist-ath_pci.conf]
blacklist ath_pci
 
[/etc/modprobe.d/blacklist.conf]
blacklist evbug
blacklist usbmouse
blacklist usbkbd
blacklist eepro100
blacklist de4x5
blacklist eth1394
blacklist snd_intel8x0m
blacklist snd_aw2
blacklist prism54
blacklist bcm43xx
blacklist garmin_gps
blacklist asus_acpi
blacklist snd_pcsp
blacklist pcspkr
blacklist amd76x_edac
 
[/etc/modprobe.d/blacklist-rare-network.conf]
alias net-pf-3 off
alias net-pf-6 off
alias net-pf-9 off
alias net-pf-11 off
alias net-pf-12 off
alias net-pf-19 off
alias net-pf-21 off
alias net-pf-36 off
 
[/etc/modprobe.d/intel-microcode-blacklist.conf]
blacklist microcode
 
[/etc/modprobe.d/iwlwifi.conf]
remove iwlwifi \
(/sbin/lsmod | grep -o -e ^iwlmvm -e ^iwldvm -e ^iwlwifi | xargs /sbin/rmmod) \
&& /sbin/modprobe -r mac80211
 
##### rc.local ##########################
 
grep: /etc/rc.local: No such file or directory
 
##### pm-utils ##########################
 
##### udev rules ########################
 
##### dmesg #############################

Ubuntu 25.04, Ubuntu Mate 1.26.2 desktop installed shortly after upgrading.

The problem is the Password screen on boot. When I upgraded to Ubuntu 25.04, somehow bits and pieces of my previous V24.10 came along for the ride. I used a USB stick and thought I was doing a full install and afterwards needed to install the Home directory.

After update/upgrading to 25.04, and installing some of my favorite apps, I installed MATE. As users of MATE know, the password screen changes to their setup and that MATE custom password page shows Jimtek7 (my previous setup) & Jimtek8 (my current setup) as choices, with the password box and along with a MATE symbol which in the past I could click on it and Ubuntu/MATE plus some other things like MATE software would show up.

Now when I click on that gear the first time in the morning when booting it doesn't open. I go ahead and boot, and on reboot the MATE symbol does not show the other choices unless I choose Jimtek7, open it, then reboot. On the second reboot, the multiple choices are then available, I select Jimtek8, make my choice of either Ubuntu Gnome desktop or MATE desktop.

Today, installed Cinnamon desktop and the same thing happens. I have to double boot, selecting Jimtek7 first, rebooting selecting Jimtek8 then clicking on the gear and I have to do this before Cinnamon becomes available. If I select the gear first without booting to Jimtek7 it doesn't show any choices.

Suspecting a bug in MATE I searched Google for a method of reporting the bug and nothing that was suggested works.

I have 2 questions.

1. How do I get rid of that Jimtek7 selection? If I boot to that it shows a bare desktop without my usual desktop icons and links.

2. How do I report a bug in MATE?

I'm running Ubuntu 24.04, my first disk has a swap partition on it:

Device         Start       End   Sectors   Size Type
/dev/sda1       2048      4095      2048     1M BIOS boot
/dev/sda2       4096   1054719   1050624   513M EFI System
/dev/sda3  226050048 234438655   8388608     4G Linux swap
/dev/sda4    1054720 226050047 224995328 107.3G Linux filesystem

But the swap is listed as a swapfile:

$ cat /proc/swaps
Filename                                Type            Size            Used            Priority
/swapfile                               file            2097148         612580          -2

How do I change the system to use the swap partition instead of a swapfile file?

I’m using the latest EA Trial version on Kubuntu (via Wine) and connecting to a PostgreSQL repository.

In the Notes window I’m experiencing an incorrect rendering of bullet lists:

instead of standard bullet points, EA displays a wide left bracket character (not normal < ). Probably one of this one

• „〈“ – LEFT ANGLE BRACKET | Unicode: U+3008
• „⟨“ – MATHEMATICAL LEFT ANGLE BRACKET | Unicode: U+27E8
• „❬“ – MEDIUM LEFT-POINTING ANGLE BRACKET | Unicode: U+276C
• „❮“ – HEAVY LEFT-POINTING ANGLE QUOTATION ``MARK | Unicode: U+276E

In the database table t_object → notes, the content is stored correctly as:

<ul>
<li>Row</li>
<li>Row</li>
</ul>

It seems to be some HTML rendering bug inside Note area.

Can someone help me to solve it?

Can someone confirm that on Linux is possible to solve it

There is a progress bar glitch on the program installation being made on gnome-boxes virtual box-like application, i dont see that as a problem per se, but seems like a lack of video ram issue. Meanning the graphical installation software does need at leat a 64 mb ram to run whithout graphical glitches, if anyone is having this problem as well, what you think it is? i think is a lack of video ram issue for the virtual machine in particular, there is a 16 mb video ram for this vm i just installed.

I'd like to build opencv from source on Ubuntu 25.10, ideally with support for CUDA, python, and c++. CUDA is working fine, eg when tested with pytorch. I've run into multiple problems with the build, though. Leaving aside the CUDA issues, I keep getting this:

Make Warning at cmake/OpenCVFindLAPACK.cmake:60 (message):
  LAPACK(OpenBLAS): CBLAS/LAPACK headers are not found in '/usr/lib/include'
Call Stack (most recent call first):
  cmake/OpenCVFindLAPACK.cmake:190 (ocv_lapack_check)
  CMakeLists.txt:818 (include)

I've installed these packages: libblas-dev liblapack-dev liblapacke-dev

To try to isolate this problem I've tried a very stripped down cmake invocation:

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local ..

I've also tried

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -D OpenBLAS_DIR=/usr/include/x86_64-linux-gnu/openblas-pthread/ ..

and

cmake -D CMAKE_BUILD_TYPE=Release -D CMAKE_INSTALL_PREFIX=/usr/local -D OpenBLAS_DIR=/usr/include/eigen3/Eigen/src/misc/ ..

(lapacke.h, lapack.h, etc are in the second and cblas.h in the first)

Any assistance would be much appreciated.

I just downloaded Ubuntu Cinnamon, the latest version. I'm a previous Windows 10 user who decided to change today to Linux, but I can't change the display! I'm right now using this kind of "trial version" of Ubuntu using Rufus, latest version to date too. I'm also using two monitors right now, one with HDMI and my main one with DVI. I'm really not sure how to keep going, and I feel low-key stupid.

This is how Settings looks like.

I have an RTX 5060 and after running lspci this is what it shows.

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne Root Complex
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe GPP Bridge
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne PCIe GPP Bridge
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Renoir PCIe Dummy Host Bridge
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Renoir Internal PCIe GPP Bridge to Bus
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 51)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Cezanne Data Fabric; Function 7
01:00.0 VGA compatible controller: NVIDIA Corporation Device 2d05 (rev a1)
01:00.1 Audio device: NVIDIA Corporation Device 22eb (rev a1)
02:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] 500 Series Chipset USB 3.1 XHCI Controller
02:00.1 SATA controller: Advanced Micro Devices, Inc. [AMD] 500 Series Chipset SATA Controller
02:00.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] 500 Series Chipset Switch Upstream Port
03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
03:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43ea
04:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8821CE 802.11ac PCIe Wireless Network Adapter
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8211/8411 PCI Express Gigabit Ethernet Controller (rev 15)
06:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. Device 5028 (rev 03)
07:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Zeppelin/Raven/Raven2 PCIe Dummy Function (rev c8)
07:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Renoir Radeon High Definition Audio Controller
07:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 10h-1fh) Platform Security Processor
07:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
07:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Renoir/Cezanne USB 3.1
07:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller

I installed Ubuntu 24.04 on my laptop few days ago and it works perfectly except for the fact that I can't control brightness of the screen. The slider is set to maximum, but I have around 50% of brightness I used to have on Windows. Brightness control was working on Windows. Moving the slider does not make any changes to screen brightness. Is there any known fix for this issue or is it something I have to deal with?

• Model: Acer Nitro 5
• Processor: 12 Gen Intel Core i5-12500H x 16
• Graphics 1: Intel Iris Xe graphics
• Graphics: 2: Nvidia GeForce RTX 3050Ti laptop GPU
• Memory: 16 GB
• System: Ubuntu 24.04.3 LTS (64-bit)

I've read some pdf documents throughout a long period of time and I'd like to backup the last known position where I stopped reading/last read page of each document.

I hope I'm explaining my self properly. Another way to put it is that I'd like to back up the data that saves my last read page on a series of pdf documents .

Every time I open a pdf that I read previously my system opens the last known page . Is it possible to back up such data ? It must be saved somewhere as it is accessible every time I open a old read pdf .

I have installed Xubuntu v25.10 on a old Chromebook.

It seems to be working fine however if I open either the App Center app or the Firmware Updater app there is screen tearing happening.

They flicker between normal and scrambled.

I have no problems with all other apps in Xubuntu v25.10 as I have tried them all.

Similar problems have been reported at App Center fails to start due to Flutter rendering issues #1655

If I run lspci -k | grep -EA3 'VGA|3D|Display' I get the following:

00:02.0 VGA compatible controller: Intel Corporation Atom/Celeron/Pentium Processor x5-E8000/J3xxx/N3xxx Integrated Graphics Controller (rev 35)
   DeviceName: VGA compatible controller
   Subsystem: Intel Corporation Device 7270
   Kernel driver in use: i915
   Kernel modules: i915

I am not a Linux user so I don't know where to start to fix the problem.

I tried the following from the https://www.reddit.com/r/Ubuntu/comments/1cfzjpj/screen_flickering_in_ubuntu_2404/ thread but Xubuntu was no longer booting into the graphical environment so I had to delete the created file:

sudo gedit /usr/share/X11/xorg.conf.d/20-intel_flicker_fix.conf 

Created these lines in the file:

Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "TripleBuffer" "true"
Option "TearFree" "true"
EndSection 

I have found if I run the command LIBGL_ALWAYS_SOFTWARE=1 snap run snap-store the App Center app works without tearing but if I run the same command for Firmware Updater LIBGL_ALWAYS_SOFTWARE=1 snap run firmware-updater the screen tearing still occurs.

I have copied and modified the /usr/local/share/applications/snap-store_snap-store.desktop file and changed the Exec line to env LIBGL_ALWAYS_SOFTWARE=1 BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/snap-store_snap-store.desktop /snap/bin/snap-store %U which at least fixes the App Center, leaving only the Firmware Updater program with a problem.

Is there a way to fix the Firmware Updater program?

Forcing Software Rendering with the LIBGL_ALWAYS_SOFTWARE=1 improves it but doesn't completely fix it.

Now that Ubuntu 24.04 is released and I upgraded my laptop, and the next LTS is scheduled in about 4 months, nautilus-gtkhash is no more in official repositories. How do I right-click in nautilus to get hashes of various files?

I recently installed Ubuntu 24.03.3 LTS on a new bought Lenovo IdeaPad 5 2-in-1 14IAL10, alongside Windows 11. Everything worked fine (except the Realtek sound card, but that's another issue) until after two days the bootloader didn't show up anymore. It's not listed in the bios either. The only option there is the Windows bootloader. I can still log in the Windows 11 partition, but not anymore into Ubuntu. With an Ubuntu live edition I downloaded "Boot repair" and got the following report:

boot-repair-4ppa2081                                              [20251208_1536]

============================== Boot Info Summary ===============================

 => No boot loader is installed in the MBR of /dev/nvme0n1.

nvme0n1p1: _____________________________________________________________________

    File system:       vfat
    Boot sector type:  FAT32
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        /efi/Boot/bootx64.efi /efi/Boot/fbx64.efi 
                       /efi/Boot/mmx64.efi 
                       /efi/Microsoft/Boot/SecureBootRecovery.efi 
                       /efi/Microsoft/Boot/bootmgfw.efi 
                       /efi/Microsoft/Boot/bootmgr.efi

nvme0n1p2: _____________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 

nvme0n1p3: _____________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  Windows 8 or 10
    Boot files:        /Windows/System32/winload.exe

nvme0n1p4: _____________________________________________________________________

    File system:       ntfs
    Boot sector type:  NTFS
    Boot sector info:  No errors found in the Boot Parameter Block.
    Operating System:  
    Boot files:        

nvme0n1p5: _____________________________________________________________________

    File system:       
    Boot sector type:  -
    Boot sector info: 

sda: ___________________________________________________________________________

    File system:       iso9660
    Boot sector type:  Grub2 (v1.99-2.00)
    Boot sector info:  Grub2 (v1.99-2.00) is installed in the boot sector of 
                       sda and looks at sector 0 of the same hard drive for 
                       core.img, but core.img can not be found at this 
                       location.
    Mounting failed:   mount: /mnt/BootInfo/FD/sda: /dev/sda already mounted or mount point busy.
       dmesg(1) may have more information after failed mount system call.


================================ 1 OS detected =================================

OS#1 (windows):   Windows 8 or 10 on nvme0n1p3

================================ Host/Hardware =================================

CPU architecture: 64-bit
Video: Arrow Lake-U [Intel Graphics] from Intel Corporation
Live-session OS is Ubuntu 64-bit (Ubuntu 24.04.3 LTS, noble, x86_64)

===================================== UEFI =====================================

BIOS/UEFI firmware: RBCN20WW(1.20) from LENOVO
The firmware is EFI-compatible, and is set in EFI-mode for this live-session.
SecureBoot disabled (confirmed by mokutil).
BootCurrent: 0000
Timeout: 0 seconds
BootOrder: 2001,0003,2002,2003
Boot0000* EFI USB Device (KingstonDT 101 G2)    UsbWwid(951,1642,0,001CC0EC34F1FAC1B7E3143)/HD(2,GPT,b5416491-a6d3-42b2-a3f4-260427bcf601,0xbcf500,0x27b0)RC
Boot0003* Windows Boot Manager  HD(1,GPT,1ed5da32-f79a-4135-9767-74ed4fe68ff5,0x800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi)57494e444f5753000100000088000000780000004200430044004f0042004a004500430054003d007b00390064006500610038003600320063002d0035006300640064002d0034006500370030002d0061006300630031002d006600330032006200330034003400640034003700390035007d00000000000100000010000000040000007fff0400
Boot2001* EFI USB Device    RC
Boot2002* EFI DVD/CDROM RC
Boot2003* EFI Network   RC

07e25dcaf57c776875f78fa36827c58e   nvme0n1p1/Boot/bootx64.efi
39bc76ff6662f4fbe9aa116e4c997b41   nvme0n1p1/Boot/fbx64.efi
4ba5a5aad43c197e9fb58b76b404d287   nvme0n1p1/Boot/mmx64.efi
2460f2fe283f93b48d7618e4d8fcf05e   nvme0n1p1/Microsoft/Boot/SecureBootRecovery.efi
5a2a56ec90a9e18a186e8aecf57515f5   nvme0n1p1/Microsoft/Boot/bootmgfw.efi
cee6ba033a2c963880f0d92778ed36a7   nvme0n1p1/Microsoft/Boot/bootmgr.efi

============================= Drive/Partition Info =============================

Disks info: ____________________________________________________________________

nvme0n1 : is-GPT,   no-BIOSboot,    has---ESP,  not-usb,    not-mmc, has-os,    has-win,    2048 sectors * 512 bytes

Partitions info (1/3): _________________________________________________________

nvme0n1p1   : no-os,    64, nopakmgr,   no-docgrub, nogrub, nogrubinstall,  no-grubenv, noupdategrub,   not-far
nvme0n1p3   : is-os,    64, nopakmgr,   no-docgrub, nogrub, nogrubinstall,  no-grubenv, noupdategrub,   end-after-100GB
nvme0n1p4   : no-os,    64, nopakmgr,   no-docgrub, nogrub, nogrubinstall,  no-grubenv, noupdategrub,   end-after-100GB
nvme0n1p5   : no-os,    64, nopakmgr,   no-docgrub, nogrub, nogrubinstall,  no-grubenv, noupdategrub,   end-after-100GB

Partitions info (2/3): _________________________________________________________

nvme0n1p1   : is---ESP, part-has-no-fstab,  no-nt,  no-winload, no-recov-nor-hid,   no-bmgr,    notwinboot, vfat
nvme0n1p3   : isnotESP, part-has-no-fstab,  no-nt,  haswinload, no-recov-nor-hid,   no-bmgr,    notwinboot, ntfs
nvme0n1p4   : isnotESP, part-has-no-fstab,  no-nt,  no-winload, recovery-or-hidden, no-bmgr,    notwinboot, ntfs
nvme0n1p5   : isnotESP, part-has-no-fstab,  no-nt,  no-winload, no-recov-nor-hid,   no-bmgr,    notwinboot, 

Partitions info (3/3): _________________________________________________________

nvme0n1p1   : not--sepboot, no-kernel,  part-has-no-fstab,  not-sep-usr,    no---usr,   part-has-no-fstab,  no--grub.d, nvme0n1
nvme0n1p3   : not--sepboot, no---boot,  part-has-no-fstab,  not-sep-usr,    no---usr,   part-has-no-fstab,  no--grub.d, nvme0n1
nvme0n1p4   : not--sepboot, no---boot,  part-has-no-fstab,  not-sep-usr,    no---usr,   part-has-no-fstab,  no--grub.d, nvme0n1
nvme0n1p5   : maybesepboot, no---boot,  part-has-no-fstab,  not-sep-usr,    no---usr,   part-has-no-fstab,  no--grub.d, nvme0n1

fdisk -l (filtered): ___________________________________________________________

Disk nvme0n1: 953.87 GiB, 1024209543168 bytes, 2000409264 sectors
Disk identifier: C6F83763-09F9-4B27-A7D6-952947FC5267
              Start        End    Sectors   Size Type
nvme0n1p1       2048     534527     532480   260M EFI System
nvme0n1p2     534528     567295      32768    16M Microsoft reserved
nvme0n1p3     567296  222046207  221478912 105.6G Microsoft basic data
nvme0n1p4 1996312576 2000408575    4096000     2G Windows recovery environment
nvme0n1p5  222046208 1996312575 1774266368   846G Linux filesystem
Partition table entries are not in disk order.
Disk sda: 7.45 GiB, 7995197440 bytes, 15615620 sectors
Disk identifier: B5416491-A6D3-42B2-A3F6-260427BCF601
        Start      End  Sectors  Size Type
sda1        64 12383487 12383424  5.9G Microsoft basic data
sda2  12383488 12393647    10160    5M EFI System
sda3  12393648 12394247      600  300K Microsoft basic data
sda4  12394496 15613951  3219456  1.5G Linux filesystem

parted -lm (filtered): _________________________________________________________

sda:7995MB:scsi:512:512:gpt:Kingston DT 101 G2:;
1:32.8kB:6340MB:6340MB::ISO9660:hidden, msftdata;
2:6340MB:6346MB:5202kB::Appended2:boot, esp;
3:6346MB:6346MB:307kB::Gap1:hidden, msftdata;
4:6346MB:7994MB:1648MB:ext4::;
nvme0n1:1024GB:nvme:512:512:gpt:SAMSUNG MZAL81T0HFLB-00BL2:;
1:1049kB:274MB:273MB:fat32:EFI system partition:boot, esp;
2:274MB:290MB:16.8MB::Microsoft reserved partition:msftres;
3:290MB:114GB:113GB:ntfs:Basic data partition:msftdata;
5:114GB:1022GB:908GB:::;
4:1022GB:1024GB:2097MB:ntfs:Basic data partition:hidden, diag, no_automount;

blkid (filtered): ______________________________________________________________

NAME        FSTYPE   UUID                                 PARTUUID                             LABEL                    PARTLABEL
sda         iso9660  2025-08-05-18-20-26-00                                                    Ubuntu 24.04.3 LTS amd64 
├─sda1      iso9660  2025-08-05-18-20-26-00               b5416491-a6d3-42b2-a3f7-260427bcf601 Ubuntu 24.04.3 LTS amd64 ISO9660
├─sda2      vfat     73B7-988D                            b5416491-a6d3-42b2-a3f4-260427bcf601 ESP                      Appended2
├─sda3                                                    b5416491-a6d3-42b2-a3f5-260427bcf601                          Gap1
└─sda4      ext4     5e7f783e-fa91-499c-ba85-947fa6bada52 3795c79d-7169-40de-9751-4d9490da2d35 writable                 
nvme0n1                                                                                                                 
├─nvme0n1p1 vfat     5C17-39E0                            1ed5da32-f79a-4135-9767-74ed4fe68ff5 SYSTEM_DRV               EFI system partition
├─nvme0n1p2                                               c9f71b0a-b454-449c-82b4-73d192717260                          Microsoft reserved partition
├─nvme0n1p3 ntfs     3AC417C7C41783F3                     1820a08c-b60e-4652-a352-ab9c22ee9b00 Windows-SSD              Basic data partition
├─nvme0n1p4 ntfs     4A8C181E8C18075B                     f0089e24-1ec3-4b7b-bfd4-95b3b32111d7 WINRE_DRV                Basic data partition
└─nvme0n1p5                                               d6783c6f-3105-4772-a296-31f45f34337a                          

Mount points (filtered): _______________________________________________________

                                                               Avail Use% Mounted on
/dev/nvme0n1p1                                                  207M  19% /mnt/boot-sav/nvme0n1p1
/dev/nvme0n1p3                                                 20.1G  81% /mnt/boot-sav/nvme0n1p3
/dev/nvme0n1p4                                                  1.3G  35% /mnt/boot-sav/nvme0n1p4
/dev/sda1                                                          0 100% /cdrom
efivarfs                                                      107.9K  58% /sys/firmware/efi/efivars

Mount options (filtered): ______________________________________________________

/dev/nvme0n1p1                                                vfat            rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
/dev/nvme0n1p3                                                fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/nvme0n1p4                                                fuseblk         ro,relatime,user_id=0,group_id=0,allow_other,blksize=4096
/dev/sda1                                                     iso9660         ro,noatime,nojoliet,check=s,map=n,blocksize=2048,iocharset=utf8

======================== Unknown MBRs/Boot Sectors/etc =========================


/dev/nvme0n1p4: unknown GPT attributes
8000000000000001



Suggested repair: ______________________________________________________________

The default repair of the Boot-Repair utility would not act on the MBR.
Additional repair would be performed:  win-legacy-basic-fix

(copied from https://paste.ubuntu.com/p/JhZQ9w8JSV/)

Does anybody have an idea what to do? Thanks for input on the issue.

using "lockscreen extension" to customize my lock screen - looks and runs GREAT with Linux 6.8.0-85-generic kernel, but every other kernel since then (6.8.0-86, 6.8.0-87, and latest 6.8.0-88) restoring goes to the grub-customizer fancy login screen instead (bummer) ~ WHY?

All the newer kernels do fine resuming from suspend and going to my fancy lock screen, just restoring using them has this weird 'BUG'.

The other 'BUG' these newer kernels seem to be afflicted with is when restoring, my USB wifi gets rerouted (from router) to the one my PCI wifi uses (an extender) - normally this only happens upon initial boot, even with my favorite Linux 6.8.0-85-generic kernel. But upon restoring it stays with router... but not with newer kernels that reroute it to the extender :-\ They do fine leaving it alone resuming...

assumed it would be understood based on kernels used 24.04lts and kernels are indicated above... 'flavor'? like wayland? Other kernels that 'worked well' was 6.8.0-53, 6.8.0-79 and 6.8.0-84 - no issues with those...

I read askubuntu.com/help/how-to-ask and took the tour - so, couldn't find anything 'violated'... what gives? ...such zeal to close ~ wow!

should I just use forum.linuxconfig.org instead of askubuntu?

Don't know what was wrong (and now never will) ~ but apparently with the last few ubuntu updates, and last one a while back required a restart, and seemed to have fixed whatever was causing the 'bug(s)' all these last months... for a day, restoring from hibernation using 6.8.0-88 goes to lock screen not login screen (so happy!), AND the usb wifi stays with the router and no longer jumps to the extender!

OOPS - after only one day of 6.8.0-88 working right, it's back to rerouting usb wifi, and not going to lock screen but going to login screen instead...

more at: Why does restoring from hibernation goes to login screen, not lockscreen - Linux Beginners / Newbie - Linux Forum

By setting up my new Ubuntu Server 24.04 I was confronted with a problem I cannot remember having had in the past while setting up the system to work with Wake On LAN. What I want is quite simple. When the server is turned off, I still want the network card to listen for the magic paket (which is non other than 16x the MAC address). For that I did what I thought was all I had to do, which in my motherboard's case (ASUS B75M-PLUS) is turning on the Power On By PCIE/PCI option. I found out that this was not all I had to do. There is also the need to execute sudo ethtool -s enp3s0 wol g every time the OS is turned on. And as this is the case, the most sensible thing to do seems to create a new systemd file to run this command on every boot.

This is the part I do not understand with Wake On LAN, which brings me to the question I just could not find out on the net. Why do I also have to setup Wake On LAN in the OS? It is just about turning on the server, which should have nothing to do with any OS installed on it. Also, why do I have to execute this ethtool command every time the system boots up? I believe this command sets some switch within the network card, but I wonder why this setting does not persist, forcing me to switch it on over and over.

I attempted to restore a MacBook 6.2 (mid 2010) that was very slow with the factory-hardware-configuration in early 2020 (4 GB RAM, GeForce GT 330M dedicated graphics board, and Intel Core i5). First, I manually cleaned the dust from the motherboard, fan, and all other components. After that, I purchased a compatible 4 GB RAM module, installed it, and upgraded to Ubuntu 18.

I then faced the issues below:

1. Immediately after installation, I realized that the fan speed was not correctly configured, and the MacBook was dangerously overheating, causing the system to freeze.

2. After resolving the initial issue (solution described below), when I attempted to start a "heavy-graphics" program (such as Firefox), the OS also became stuck. If it took a long time to open or became stuck for an indefinite period (which was common), the only solution was to restart the system.

3. To avoid the previous issue, I discovered an option, which leads me to a new problem. I began to open this type of program by right-clicking and then selecting Open using dedicated graphics card. It operated flawlessly till some application started on its own. When this occurs, the graphics-heavy program launches without the "dedicated graphics" options and remains in the same condition, stuck. As a result, I began to regard the Open with a dedicated graphics card strategy as more of a "duct-tape" fix than a true solution. Then I recognized that the OS was being stuck when using the Intel graphics card, therefore I realized that no third-party software from the graphics-dedicated-board was being used. Then I went to the apps menu → Software & Updates → Additional Drivers where I discovered an option to use the NVIDIA driver for the graphics that was not chosen. So, believing I'd handled everything, I chose the software option, rebooted the system, and... blank screen! The system was not in any way initialized.

I tried some forum suggestions, reinstalling Ubuntu and trying again and again, but none of them worked for my situation. So, for a long time, I employed the "duct-tape" technique (mentioned previously), occasionally needing to restart my system when my mac became stuck.

Did someone have the same problem? Could someone help me to solve it?

I expect it to do the same thing as L ALT + ← which goes back one webpage backwards. But R ALT + ← does nothing in Mozilla Firefox browser. I am using Ubuntu 20.04.03LTS.

For example: I have kept GoogleTranslate.com tab opened in my FireFox browser for around a week and I have made numerous queries during this era. Now I want to trace back my queries one by one, by pressing Right Alt + ← but it doesn't work for me, it does no thing.

I have an Acer Predator Triton 700 and it does not have option to disable Intel RST (Rapid Storage Technology) in the BIOS. What should I do?

I have a brand new WSL2, running on the latest Windows 10 (2004) with Ubuntu 20.04, MySQL installed, I can access it from Bash and get the status --

mysql> status
--------------
mysql  Ver 8.0.20-0ubuntu0.20.04.1 for Linux on x86_64 ((Ubuntu))

Connection id:          10
Current database:
Current user:           root@localhost
SSL:                    Not in use
Current pager:          stdout
Using outfile:          ''
Using delimiter:        ;
Server version:         8.0.20-0ubuntu0.20.04.1 (Ubuntu)
Protocol version:       10
Connection:             Localhost via UNIX socket
Server characterset:    utf8mb4
Db     characterset:    utf8mb4
Client characterset:    utf8mb4
Conn.  characterset:    utf8mb4
UNIX socket:            /var/run/mysqld/mysqld.sock
Binary data as:         Hexadecimal
Uptime:                 13 sec

Next I want to connect with MySQL Workbench. All I ever get is

Your connection failed for user 'root' to the MySQL server at 127.0.0.1:3306
Access denied for user 'root'@'localhost'

My WSL2 list is ---

PS C:\Users\gymdo> wsl -l -v
  NAME            STATE           VERSION
* Ubuntu-20.04    Running         2

My WSL2 info is ---

Installation successful!
To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.

Welcome to Ubuntu 20.04 LTS (GNU/Linux 4.19.104-microsoft-standard x86_64)

 * Documentation:  https://help.ubuntu.com
 * Management:     https://landscape.canonical.com
 * Support:        https://ubuntu.com/advantage

  System information as of Sat Jun 13 02:35:32 EDT 2020

  System load:  1.97               Processes:             8
  Usage of /:   0.4% of 250.98GB   Users logged in:       0
  Memory usage: 0%                 IPv4 address for eth0: 172.20.109.28
  Swap usage:   0%

0 updates can be installed immediately.
0 of these updates are security updates.

I have tried using the 172.20.109.28 from above --- same error

Looking at it from the Windows side with ---

Ethernet adapter vEthernet (WSL):

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::c54a:f83c:a5f8:40b2%43
   IPv4 Address. . . . . . . . . . . : 172.20.96.1
   Subnet Mask . . . . . . . . . . . : 255.255.240.0
   Default Gateway . . . . . . . . . :

I have tried using the 172.20.96.1 from above --- same error

One strange thing is --- when I try user name of root@localhost instead of simply root, the workbench pops up the "enter password" popup. So excited I was, but when I leave the password field blank it still fails with password: NO

I'm a beaten down man --- I need help.

I'm using 19.10 on an ASUS laptop with an Intel® HD Graphics 505 (Broxton) graphics driver.

I'm trying to repurpose a TV with an HDMI port as an external monitor. System settings can tell that that the monitor is there. However, the display reads "No Signal".

I've looked at syslog and dmesg. I don't see anything that looks relevant to my untrained eyes.

gpu-manager.log might have some relevant information:

log_file: /var/log/gpu-manager.log
last_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
new_boot_file: /var/lib/ubuntu-drivers-common/last_gfx_boot
can't access /run/u-d-c-nvidia-was-loaded file
can't access /opt/amdgpu-pro/bin/amdgpu-pro-px
Looking for nvidia modules in /lib/modules/5.3.0-45-generic/updates/dkms
Looking for amdgpu modules in /lib/modules/5.3.0-45-generic/updates/dkms
Is nvidia loaded? no
Was nvidia unloaded? no
Is nvidia blacklisted? no
Is intel loaded? yes
Is radeon loaded? no
Is radeon blacklisted? no
Is amdgpu loaded? no
Is amdgpu blacklisted? no
Is amdgpu versioned? no
Is amdgpu pro stack? no
Is nouveau loaded? no
Is nouveau blacklisted? no
Is nvidia kernel module available? no
Is amdgpu kernel module available? no
Vendor/Device Id: 8086:5a84
BusID "PCI:0@0:2:0"
Is boot vga? yes
Skipping "/dev/dri/card0", driven by "i915"
Skipping "/dev/dri/card0", driven by "i915"
Skipping "/dev/dri/card0", driven by "i915"
Found "/dev/dri/card0", driven by "i915"
output 0:
    card0-HDMI-A-1
output 1:
    card0-eDP-1
Number of connected outputs for /dev/dri/card0: 2
Does it require offloading? yes
last cards number = 1
Has amd? no
Has intel? yes
Has nvidia? no
How many cards? 1
Has the system changed? No
Single card detected
Nothing to do 

Don't know if it matters, but I switched to Unity a few days ago to get Simple Screen Recorder to work.

Output from: 'xrandr | grep '*' '

1280x720      60.00*   59.99    59.86    59.74  
1280x720      60.00*   50.00    59.94  

as requested

When all else fails, read the manual. The instruction there is to use VGA to connect to computer. I suspect computers didn't have HDMI back when we bought it. USB to VGA adapters are available and reasonably priced. The HDMI works on a windows machine, but with pretty severe overscanning.

I'm trying to get my system setup for dual boot on 2 different SSDs on my system. One of the SSDs is an NVMe SSD. I can select and boot each one using the boot menu inside my BIOS, so the installations themselves are working as they should, but I can't seem to get this thing to dual boot at all.

With a bit of research, I found out about Boot-Repair and I installed and ran it. It kicked back

"GPT detected. Please create a BIOS-Boot partition (>1MB, unformatted filesystem, bios_grub flag). This can be performed via tools such as Gparted. Then try again. Alternatively, you can retry after activating the [Separate /boot/efi partition:] option."

I opened up what I think is parted? (it's listed as "disks" on my installed software). But I have no idea what I'm supposed to be doing here so I was hoping someone could help me with step-by-step so I don't destroy my system.

Boot-Repair suggested I save my info and upload it to Pastebin when asking for help, which I did and it can be found below.

http://paste.ubuntu.com/p/dCRZ4DfNrb/

I am still unable to boot into Windows. Windows 10 (on /dev/nvme0n1p1) shows up now in the boot menu...

Ubuntu
Advanced options for Ubuntu
Windows 10 (on /dev/nvme0n1p1)

...but when I select it, I get this purple error screen:

error: file `/boot/grub/x86_64-efi/ntfs.mod' not found.
error: no such device: 94487CA2487C8530.
error: can't find command `parttool'.
error: can't find command `drivemap'.
error: invalid EFI file path.

Press any key to continue..._

Recently I tried to add own ssl for https support in localhost which I couldn't achieve but now i am getting all these error with certificates

With command git push

fatal: unable to access 'https://github.com/username/project.git/': server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none

cat /etc/ssl/certs/ca-certificates.crt is blank.

I tried
sudo apt install --reinstall ca-certificates
sudo update-ca-certificates

$ GIT_CURL_VERBOSE=1 git push

* Couldn't find host github.com in the .netrc file; using defaults
*   Trying 192.30.253.113...
* TCP_NODELAY set
* Connected to github.com (192.30.253.113) port 443 (#0)
* found 0 certificates in /etc/ssl/certs/ca-certificates.crt
* found 4 certificates in /etc/ssl/certs
* ALPN, offering http/1.1
* SSL connection using TLS1.2 / ECDHE_RSA_AES_128_GCM_SHA256
* server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
* stopped the pause stream!
* Closing connection 0

found 0 certificates in /etc/ssl/certs/ca-certificates.crt

I am getting error updating with certificates error sudo apt update

Hit:1 http://np.archive.ubuntu.com/ubuntu bionic InRelease
Hit:2 http://np.archive.ubuntu.com/ubuntu bionic-updates InRelease                                                                                    
Hit:3 http://np.archive.ubuntu.com/ubuntu bionic-backports InRelease                                                                                  
Hit:4 http://np.archive.ubuntu.com/ubuntu bionic-proposed InRelease                                                                                   
Get:5 http://security.ubuntu.com/ubuntu bionic-security InRelease [83.2 kB]                                                                           
Ign:6 https://deb.nodesource.com/node_8.x bionic InRelease                                                                                            
Ign:7 http://dl.google.com/linux/chrome/deb stable InRelease                                                                                          
Get:8 http://archive.canonical.com/ubuntu bionic InRelease [10.2 kB]                                                                                  
Hit:9 http://ppa.launchpad.net/hluk/copyq/ubuntu bionic InRelease                                                                                     
Ign:10 https://packages.cloud.google.com/apt cloud-sdk-bionic InRelease                                                                               
Hit:11 http://dl.google.com/linux/chrome/deb stable Release                                                                                           
Err:12 https://deb.nodesource.com/node_8.x bionic Release                                                                                             
  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: 13.33.170.36 443]
Hit:13 http://packages.microsoft.com/repos/vscode stable InRelease                                                                                    
Err:14 https://packages.cloud.google.com/apt cloud-sdk-bionic Release                                                                                 
  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: 74.125.68.113 443]
Ign:15 https://download.sublimetext.com apt/stable/ InRelease                                                                                         
Hit:16 http://ppa.launchpad.net/mozillateam/firefox-next/ubuntu bionic InRelease                                                 
Ign:17 http://repo.vivaldi.com/stable/deb stable InRelease                                                                       
Hit:18 http://repo.vivaldi.com/stable/deb stable Release                                                                             
Hit:19 http://ppa.launchpad.net/ubuntubudgie/backports/ubuntu bionic InRelease                                                   
Err:20 https://download.sublimetext.com apt/stable/ Release                                                
  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown.  Could not handshake: Error in the certificate verification. [IP: 104.236.0.104 443]
Reading package lists... Done                                                        
W: https://deb.nodesource.com/node_8.x/dists/bionic/InRelease: No system certificates available. Try installing ca-certificates.
W: https://packages.cloud.google.com/apt/dists/cloud-sdk-bionic/InRelease: No system certificates available. Try installing ca-certificates.
W: https://deb.nodesource.com/node_8.x/dists/bionic/Release: No system certificates available. Try installing ca-certificates.
W: https://download.sublimetext.com/apt/stable/InRelease: No system certificates available. Try installing ca-certificates.
E: The repository 'https://deb.nodesource.com/node_8.x bionic Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: https://packages.cloud.google.com/apt/dists/cloud-sdk-bionic/Release: No system certificates available. Try installing ca-certificates.
E: The repository 'https://packages.cloud.google.com/apt cloud-sdk-bionic Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: https://download.sublimetext.com/apt/stable/Release: No system certificates available. Try installing ca-certificates.
E: The repository 'https://download.sublimetext.com apt/stable/ Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.

[edited] cat /etc/ca-certificates.conf

# This file lists certificates that you wish to use or to ignore to be
# installed in /etc/ssl/certs.
# update-ca-certificates(8) will update /etc/ssl/certs by reading this file.
#
# This is autogenerated by dpkg-reconfigure ca-certificates.
# Certificates should be installed under /usr/share/ca-certificates
# and files with extension '.crt' is recognized as available certs.
#
# line begins with # is comment.
# line begins with ! is certificate filename to be deselected.
#
!mozilla/ACCVRAIZ1.crt
!mozilla/AC_RAIZ_FNMT-RCM.crt
!mozilla/Actalis_Authentication_Root_CA.crt
!mozilla/AddTrust_External_Root.crt
!mozilla/AffirmTrust_Commercial.crt
!mozilla/AffirmTrust_Networking.crt
!mozilla/AffirmTrust_Premium.crt
!mozilla/AffirmTrust_Premium_ECC.crt
!mozilla/Amazon_Root_CA_1.crt
!mozilla/Amazon_Root_CA_2.crt
!mozilla/Amazon_Root_CA_3.crt
!mozilla/Amazon_Root_CA_4.crt
!mozilla/Atos_TrustedRoot_2011.crt
!mozilla/Autoridad_de_Certificacion_Firmaprofesional_CIF_A62634068.crt
!mozilla/Baltimore_CyberTrust_Root.crt
!mozilla/Buypass_Class_2_Root_CA.crt
!mozilla/Buypass_Class_3_Root_CA.crt
!mozilla/CA_Disig_Root_R2.crt
!mozilla/CFCA_EV_ROOT.crt
!mozilla/COMODO_Certification_Authority.crt
!mozilla/COMODO_ECC_Certification_Authority.crt
!mozilla/COMODO_RSA_Certification_Authority.crt
!mozilla/Certigna.crt
!mozilla/Certinomis_-_Root_CA.crt
!mozilla/Certplus_Class_2_Primary_CA.crt
!mozilla/Certplus_Root_CA_G1.crt
!mozilla/Certplus_Root_CA_G2.crt
!mozilla/Certum_Trusted_Network_CA.crt
!mozilla/Certum_Trusted_Network_CA_2.crt
!mozilla/Chambers_of_Commerce_Root_-_2008.crt
!mozilla/Comodo_AAA_Services_root.crt
!mozilla/Cybertrust_Global_Root.crt
!mozilla/D-TRUST_Root_Class_3_CA_2_2009.crt
!mozilla/D-TRUST_Root_Class_3_CA_2_EV_2009.crt
!mozilla/DST_Root_CA_X3.crt
!mozilla/Deutsche_Telekom_Root_CA_2.crt
!mozilla/DigiCert_Assured_ID_Root_CA.crt
!mozilla/DigiCert_Assured_ID_Root_G2.crt
!mozilla/DigiCert_Assured_ID_Root_G3.crt
!mozilla/DigiCert_Global_Root_CA.crt
!mozilla/DigiCert_Global_Root_G2.crt
!mozilla/DigiCert_Global_Root_G3.crt
!mozilla/DigiCert_High_Assurance_EV_Root_CA.crt
!mozilla/DigiCert_Trusted_Root_G4.crt
!mozilla/E-Tugra_Certification_Authority.crt
!mozilla/EC-ACC.crt
!mozilla/EE_Certification_Centre_Root_CA.crt
!mozilla/Entrust.net_Premium_2048_Secure_Server_CA.crt
!mozilla/Entrust_Root_Certification_Authority.crt
!mozilla/Entrust_Root_Certification_Authority_-_EC1.crt
!mozilla/Entrust_Root_Certification_Authority_-_G2.crt
!mozilla/GDCA_TrustAUTH_R5_ROOT.crt
!mozilla/GeoTrust_Global_CA.crt
!mozilla/GeoTrust_Primary_Certification_Authority.crt
!mozilla/GeoTrust_Primary_Certification_Authority_-_G2.crt
!mozilla/GeoTrust_Primary_Certification_Authority_-_G3.crt
!mozilla/GeoTrust_Universal_CA.crt
!mozilla/GeoTrust_Universal_CA_2.crt
!mozilla/GlobalSign_ECC_Root_CA_-_R4.crt
!mozilla/GlobalSign_ECC_Root_CA_-_R5.crt
!mozilla/GlobalSign_Root_CA.crt
!mozilla/GlobalSign_Root_CA_-_R2.crt
!mozilla/GlobalSign_Root_CA_-_R3.crt
!mozilla/Global_Chambersign_Root_-_2008.crt
!mozilla/Go_Daddy_Class_2_CA.crt
!mozilla/Go_Daddy_Root_Certificate_Authority_-_G2.crt
!mozilla/Hellenic_Academic_and_Research_Institutions_ECC_RootCA_2015.crt
!mozilla/Hellenic_Academic_and_Research_Institutions_RootCA_2011.crt
!mozilla/Hellenic_Academic_and_Research_Institutions_RootCA_2015.crt
!mozilla/Hongkong_Post_Root_CA_1.crt
!mozilla/ISRG_Root_X1.crt
!mozilla/IdenTrust_Commercial_Root_CA_1.crt
!mozilla/IdenTrust_Public_Sector_Root_CA_1.crt
!mozilla/Izenpe.com.crt
!mozilla/LuxTrust_Global_Root_2.crt
!mozilla/Microsec_e-Szigno_Root_CA_2009.crt
!mozilla/NetLock_Arany_=Class_Gold=_Főtanúsítvány.crt
!mozilla/Network_Solutions_Certificate_Authority.crt
!mozilla/OISTE_WISeKey_Global_Root_GA_CA.crt
!mozilla/OISTE_WISeKey_Global_Root_GB_CA.crt
!mozilla/OpenTrust_Root_CA_G1.crt
!mozilla/OpenTrust_Root_CA_G2.crt
!mozilla/OpenTrust_Root_CA_G3.crt
!mozilla/QuoVadis_Root_CA.crt
!mozilla/QuoVadis_Root_CA_1_G3.crt
!mozilla/QuoVadis_Root_CA_2.crt
!mozilla/QuoVadis_Root_CA_2_G3.crt
!mozilla/QuoVadis_Root_CA_3.crt
!mozilla/QuoVadis_Root_CA_3_G3.crt
!mozilla/SSL.com_EV_Root_Certification_Authority_ECC.crt
!mozilla/SSL.com_EV_Root_Certification_Authority_RSA_R2.crt
!mozilla/SSL.com_Root_Certification_Authority_ECC.crt
!mozilla/SSL.com_Root_Certification_Authority_RSA.crt
!mozilla/SZAFIR_ROOT_CA2.crt
!mozilla/SecureSign_RootCA11.crt
!mozilla/SecureTrust_CA.crt
!mozilla/Secure_Global_CA.crt
!mozilla/Security_Communication_RootCA2.crt
!mozilla/Security_Communication_Root_CA.crt
!mozilla/Sonera_Class_2_Root_CA.crt
!mozilla/Staat_der_Nederlanden_EV_Root_CA.crt
!mozilla/Staat_der_Nederlanden_Root_CA_-_G2.crt
!mozilla/Staat_der_Nederlanden_Root_CA_-_G3.crt
!mozilla/Starfield_Class_2_CA.crt
!mozilla/Starfield_Root_Certificate_Authority_-_G2.crt
!mozilla/Starfield_Services_Root_Certificate_Authority_-_G2.crt
!mozilla/SwissSign_Gold_CA_-_G2.crt
!mozilla/SwissSign_Silver_CA_-_G2.crt
!mozilla/T-TeleSec_GlobalRoot_Class_2.crt
!mozilla/T-TeleSec_GlobalRoot_Class_3.crt
!mozilla/TUBITAK_Kamu_SM_SSL_Kok_Sertifikasi_-_Surum_1.crt
!mozilla/TWCA_Global_Root_CA.crt
!mozilla/TWCA_Root_Certification_Authority.crt
!mozilla/Taiwan_GRCA.crt
!mozilla/TeliaSonera_Root_CA_v1.crt
!mozilla/TrustCor_ECA-1.crt
!mozilla/TrustCor_RootCert_CA-1.crt
!mozilla/TrustCor_RootCert_CA-2.crt
!mozilla/Trustis_FPS_Root_CA.crt
!mozilla/TÜRKTRUST_Elektronik_Sertifika_Hizmet_Sağlayıcısı_H5.crt
!mozilla/USERTrust_ECC_Certification_Authority.crt
!mozilla/USERTrust_RSA_Certification_Authority.crt
!mozilla/VeriSign_Class_3_Public_Primary_Certification_Authority_-_G4.crt
!mozilla/VeriSign_Class_3_Public_Primary_Certification_Authority_-_G5.crt
!mozilla/VeriSign_Universal_Root_Certification_Authority.crt
!mozilla/Verisign_Class_3_Public_Primary_Certification_Authority_-_G3.crt
!mozilla/Visa_eCommerce_Root.crt
!mozilla/XRamp_Global_CA_Root.crt
!mozilla/certSIGN_ROOT_CA.crt
!mozilla/ePKI_Root_Certification_Authority.crt
!mozilla/thawte_Primary_Root_CA.crt
!mozilla/thawte_Primary_Root_CA_-_G2.crt
!mozilla/thawte_Primary_Root_CA_-_G3.crt

On Ubuntu 16.04 (Xenial) box, what is the easiest way to install OpenSSH (openssh-client) that is higher than 7.2?

I am aware that I could compile from source, but I was wondering if there's a way to avoid that.

Is there an officially maintained ppa for that? I also tried sudo apt-get install -t xenial-backports openssh-client, but that doesn't have it either.

Even though I entered the right password to my machine I'm unable to login.

Issue I start my machine and for the first time I'm able to login with my password. Now I lock my machine or I suspend my laptop and try to login again. Then the Incorrect Password Issue appears.
Even though the password is correct I'm not able to login.

Temprorary Solution Whenever I switch the user and login with same user then I'm able to login or I restart the machine.

Has anybody, encountered this Issue? And are there any permanent solution?

OS: Ubuntu 16.04 LTS
Machine: Lenovo ideapad 300

Ubuntu is a totally new system for me, and I installed it on virtual box. Today when I tried to open terminal in Ubuntu, it just can't open it. Yesterday I could use the terminal normally, and I changed nothing. The terminal does have a response when I click it, but no window shows up. What's wrong with it, and what should I do?

Each time I try to download the new Plasma widget from the Plasma Add-On Installer, I get the following error:

Loading of providers from file: http://download.kde.org/ocs/providers.xml failed

Screenshot:

The same problem is also happening when I am trying to install new theme. Please check the below screenshot for clarification:

Any suggestions, comments or answers will always be appreciated. Thanks.

Wi-Fi analyzer Is a thorough application on android for managing WAP, Wi-Fi strength signal etc. I was wondering if there was a similar tool for Ubuntu

I used to be able to use ALT+F9, ALT+10... how can I restore this on GNOME3, ubuntu 12.04?

I'm checking references of a paper and want to find the positions in the body where some paper (in the references list) is referenced. Is there a PDF editor which supports search via bash and extract the context of a position? I've tried to convert PDF to text, but didn't have a good result.