i am using Ubuntu 26.04 lts and whatever gazebo i install shows error nothing is supported on this new version or is there some version
After installing Xubuntu on my computer I am unable to connect to wired networks. The computer detects that an ethernet cable is connected, however when select the network, it disconnects immediately.
I've tried several ethernet cables that worked either with my computer before os reinstallation (with Kubuntu) or with other computers.
Any help would be much appreciated.
I have to quit the application and restart it in order to get new messages. When running it does retrieve some messages but it seems to be very randomly. The selected interval (10 min) to check for new messages doesn't hold. The Thunderbird version is 140.7.1esr, Ubuntu 22.04.5 LTS.
-Örjan
I am using Ubuntu 24.04.4. my USB drives will not mount. When I plug in a USB to my USB drive Ubuntu pulls up USB icon and says Failed to mount USB disk. Error mounting dev/sda1 at /media/ai/USB DISK: file system type ... [???]... is not configured in the kernel.
Any programs like Exfat utils that require Ubuntu archives return or a sudo apt update return error temporary failure resolving us.archive.ubuntu.com. It says some archives maybe run apt-get update or try with -–fix-missing. How do I solve this?
I am trying to install Ubuntu onto an older Dell laptop using a freshly flashed and validated SanDisk USB 3.0 drive (flashed via balenaEtcher).
The boot sequence starts up fine, but it completely freezes every single time right after reading the very last APT cache repository line:
Get:5 file:/cdrom resolute/main amd64 Packages [31.7 kB]
I tried:
Replaced the USB drive entirely (originally used a generic UDisk which threw I/O buffer errors, switched to a brand new SanDisk 16GB).
Removed quiet splash from the GRUB menu to view the verbose terminal logs.
Tried booting with nomodeset (Safe Graphics mode).
Tried appending various combinations of boot flags like acpi=off, noapic, and irqpoll.
The logs:
Right before it hits the Get:5 line and hangs, the logs show a couple of errors regarding the communication bus and filesystem:
fuse: device /dev/fuse not found. Kernel module not loaded?
dbus-daemon: A connection to the bus can't be made
Failed to create stream fd: No such file or directory
This is the terminal output right at the freezing point. Since it is stalling the exact millisecond it finishes loading the configuration files and tries to hand over control to the display manager/graphics, I suspect it's a legacy hardware or kernel conflict with this specific Dell motherboard architecture.
Begin: Creating debconf-communicate fifo mechanism ... [ 6.216597] evm: overlay not supported
done.
Begin: Running /scripts/casper-bottom ... Begin: Moving mount points... ... done.
Begin: Configuring fstab... ... done.
Begin: Setting up swap... ... done.
Begin: Setting up locales... ... done.
Begin: Setting up automatic login... ... done.
Begin: Setting hostname... ... done.
Begin: Setting up console keyboard... ... done.
Begin: Applying desktop settings... ... done.
Begin: Regenerating SSL certificate... ... hostname: Name or service not known
make-ssl-cert: Could not get FQDN, using '(none)'.
make-ssl-cert: You may want to fix your /etc/hosts and/or DNS setup and run
make-ssl-cert: 'make-ssl-cert generate-default-snakeoil --force-overwrite'
make-ssl-cert: again.
done.
Begin: Loading preseed file... ... done.
Begin: Adding live session user... ... passwd: password changed.
Failed to create stream fd: No such file or directory
Failed to create stream fd: No such file or directory
Failed to create stream fd: No such file or directory
dbus-daemon[723]: [session uid=1000 pid=18446744073709551615 pidfd=5] Activating service name='org.gtk.vfs.Daemon' re
dbus-daemon[723]: [session uid=1000 pid=18446744073709551615 pidfd=5] Successfully activated service 'org.gtk.vfs.Daemon'
dbus-daemon[723]: [session uid=1000 pid=18446744073709551615 pidfd=5] Activating service name='org.gtk.vfs.Metadata' re
fuse: device /dev/fuse not found. Kernel module not loaded?
dbus-daemon[723]: [session uid=1000 pid=18446744073709551615 pidfd=5] Successfully activated service 'org.gtk.vfs.Meta
A connection to the bus can't be made
done.
Begin: Setting up init... ... done.
Begin: Configuring accessibility options... ... done.
Begin: Disabling update-notifier... ... done.
Begin: Enabling detection of crashes... ... done.
Begin: Disabling unnecessary KDE services... ... done.
Begin: Disabling the lock screen for LXQt (LP: #2000787)... ... done.
Begin: Generating APT cache for cdrom... ... Ign:1 file:/cdrom resolute InRelease
Get:2 file:/cdrom resolute Release [664 B]
Get:2 file:/cdrom resolute Release [664 B]
Get:3 file:/cdrom resolute Release.gpg [228 B]
Get:3 file:/cdrom resolute Release.gpg [228 B]
Get:4 file:/cdrom resolute/restricted amd64 Packages [14.5 kB]
Get:5 file:/cdrom resolute/main amd64 Packages [31.7 kB]
Do you have any advice on what specific kernel boot parameters or BIOS tweaks I need to use to force it past this graphical handshake?
I am using Ubuntu 24.04.4. My Network Manager is not showing. I cannot use the internet even though the Ethernet cable is plugged in and the light is on. When I try to install Network Manager: post htttps://api snapcraft.io/v2/snaps/refresh: dial tcp: lookup api.snapcraft on 127.0.0.53:53: server is misbehaving. When I try to install with sudo apt install network-manager it says unable to fetch some archives maybe run apt -get update or try with –fix missing. When I run sudo apt update it says temporary failure resolving us.archive.ubuntu.com. How do I fix this?
I am using Ubuntu 24.04.4. My Bluetooth is not showing. sudo systemctl status bluetooth says it is loaded and enabled and that it's inactive. It says it's inactive because the Bluetooth service was skipped because of the unmet condition check (ConditionPathIsDirectory=/sys/class /bluetooth). I have also typed the sudo systemctl start bluetooth command and it ran fine. It still does not show.
What can I do to solve this? My internet is also not working, so I cannot update the system with anything from the Ubuntu archives because Network Manager is not showing either.
I had updated Ubuntu from 25.10 to 26.04.
Now, when booting into kernel 7.0.0-15, the system freezes while on login screen, goes black, then login screen is displayed again. Keeps occurring in an endless loop. If I select kernel 6.17.0-29-generic instead, the laptop runs fine, and I can log in without issue.
I ran the command sudo journalctl -b -1 -p err, and "Kernel Out of Memory error"s were present.
Are there known issues with the 7.0.0-15 kernel?
System specifications on 2026-05-25 20:39:59:
Hardware Model: Dell Inc. Inspiron 16 5625
Memory: 8.0 GiB
Processor: AMD Ryzen™ 5 5625U with Radeon™ Graphics × 12
Graphics: AMD Radeon™ Graphics
Disk Capacity: 512.1 GB
Firmware Version: 1.27.0
OS Name: Ubuntu 26.04 LTS
OS Build: (null)
OS Type: 64-bit
GNOME Version: 50
Windowing System: Wayland
I am using Ubuntu 24.04.4. My Network Manager is not showing. I can not use internet even though the Ethernet cable is plugged in and the light comes on. My Bluetooth is not showing. and USB drives will not mount. I can still login to Ubuntu. LibreOffice and installed programs work. All of these were working.
Before when I try to install Network Manager: post htttps://api snapcraft.io/v2/snaps/refresh: dial tcp: lookup api.snapcraft on 127.0.0.53:53: server is misbehaving. When I try to install Network Manager with sudo apt install network-manager it says unable to fetch some archives maybe run apt -get update or try with –fix mising. When I run sudo apt get update it says temporary failure resolving us.archive.ubuntu.com. When I attempt to pull up Bluetooth it says no bluetooth found plug in dongle to use Bluetooth. When I plug in a USB drive to my USB drive Ubuntu pulls up a USB icon and says failed to mount usb disk error mounting dev/sda1 at media/ai/USB DISK: file system type exfat not configured in kernel. What do I need to do to resolve this?
dev.mysql.com/downloads/workbench only offers versions for LTS versions 24.04 and 22.04. I tried installing the 24.04 version in Ubuntu 26.04, but it failed with dependency problems.
I have an HP ZBook 15 G6, with a WWAN module included (Fibocom L850-GL). This WWAN with the SIM card is working under Windows 11 (had to start Windows to test it), but partially working under Ubuntu 26.04. The WWAN module is recognized by Ubuntu, and I can access it in the system parameters. But, I cannot define user data (apn, allowed-auth, user, password). There is an existing profile ("Datapro") that cannot be updated (I can fill in data, but it's not saved when I click on save !). I tried with mmcli, and I can create a bearer, but I don't know how to specify to connect the WWAN using this bearer...
Ideally, do you know how I could replace this "Datapro" profile to include my data ?
Edit 1:
Edit 2:
st@ZBook-15-G6:~$ sudo mmcli -m 0 --simple-connect="apn=orange.fr"
successfully connected the modem at bearer /org/freedesktop/ModemManager1/Bearer/0
st@ZBook-15-G6:~$ nmcli connection show
NAME UUID TYPE DEVICE
lo 50c4e3f1-a367-470d-9321-a2ea1be74deb loopback lo
Mi 10T 21be3474-59e6-4ba2-81e6-701582a48702 wifi --
netplan-enp0s31f6 d4735e4b-9bfa-3052-b1c4-ef3302803c9a ethernet --
st@ZBook-15-G6:~$ sudo ls -l /etc/netplan /etc/NetworkManager/system-connections/
/etc/NetworkManager/system-connections/:
total 0
/etc/netplan:
total 12
-rw------- 1 root root 191 May 18 15:44 00-installer-config.yaml
-rw------- 1 root root 104 Apr 23 03:22 01-network-manager-all.yaml
-rw------- 1 root root 695 May 18 15:37 90-NM-21be3474-59e6-4ba2-81e6-701582a48702.yaml
Edit 3:
in /etc/ModemManager, there are 3 directories, but they are empty.
I am just going to throw this one out there to see if anyone might have an idea as to what is happening. This is the first time I have ever bumped into this.
When I setup this XUbuntu 26.04 I gave it kind of a temporary hostname since I was dual booting with XUbuntu 24.04. Well, I have since removed 24.04 and I want to change my hostname back to what I use on my system.
Every time I go to change the hostname to terrance-ubuntu, sudo hostnamectl set-hostname terrance-ubuntu and I change the /etc/hosts file to match, as soon as I reboot my system the wired r8125 2.5Gbps NIC driver goes UNCLAIMED for some reason and if I connect via Wi-Fi it is extremely unstable. Any ideas?
One other thing I forgot to mention is that after this name change Chrome will also fail to launch. I will see if I can get the error messages it shows as well.
Chrome error after hostname change:
terrance@terrance-ubuntu:~$ google-chrome
[5048:5048:0525/184448.644528:ERROR:chrome/browser/process_singleton_posix.cc:363] The profile appears to be in use by another Google Chrome process (87936) on another computer (terrance-XU2604). Chrome has locked the profile so that it doesn't get corrupted. If you are sure no other processes are using this profile, you can unlock the profile and relaunch Chrome.
[5048:5048:0525/184448.646772:ERROR:chrome/browser/ui/views/message_box_dialog.cc:199] Unable to show message box: Google Chrome - The profile appears to be in use by another Google Chrome process (87936) on another computer (terrance-XU2604). Chrome has locked the profile so that it doesn't get corrupted. If you are sure no other processes are using this profile, you can unlock the profile and relaunch Chrome.
System information:
terrance@terrance-XU2604:~$ cat /etc/*release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=26.04
DISTRIB_CODENAME=resolute
DISTRIB_DESCRIPTION="Ubuntu 26.04 LTS"
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
VERSION_ID="26.04"
VERSION="26.04 LTS (Resolute Raccoon)"
VERSION_CODENAME=resolute
ID=ubuntu
ID_LIKE=debian
HOME_URL="https://www.ubuntu.com/"
SUPPORT_URL="https://help.ubuntu.com/"
BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
UBUNTU_CODENAME=resolute
LOGO=ubuntu-logo
terrance@terrance-XU2604:~$ uname -a
Linux terrance-XU2604 7.0.0-15-generic #15-Ubuntu SMP PREEMPT_DYNAMIC Wed Apr 22 16:06:43 UTC 2026 x86_64 GNU/Linux
terrance@terrance-XU2604:~$ dkms status
nct6687d/20260313-180048, 7.0.0-14-generic, x86_64: installed
nct6687d/20260313-180048, 7.0.0-15-generic, x86_64: installed
r8125/9.016.01, 7.0.0-14-generic, x86_64: installed
r8125/9.016.01, 7.0.0-15-generic, x86_64: installed
terrance@terrance-XU2604:~$ sudo lshw -C network
[sudo: authenticate] Password:
*-network
description: Wireless interface
product: MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:29:00.0
logical name: wlan0
version: 00
serial: 04:68:74:9e:f2:b3
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=mt7921e driverversion=7.0.0-15-generic firmware=____000000-20260224103233 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: iomemory:7f0-7ef irq:121 memory:7ff2100000-7ff21fffff memory:fc300000-fc307fff
*-network
description: Ethernet interface
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:2a:00.0
logical name: eth0
version: 05
serial: 0a:9c:62:49:33:4f
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=r8125 driverversion=9.016.01-NAPI duplex=full ip=10.0.0.100 latency=0 link=yes multicast=yes port=twisted pair
resources: irq:38 ioport:f000(size=256) memory:fc200000-fc20ffff memory:fc210000-fc213fff
After hostname change and a reboot:
terrance@terrance-XU2604:~$ sudo hostnamectl set-hostname terrance-ubuntu
[sudo: authenticate] Password:
terrance@terrance-XU2604:~$ cat /etc/hostname
terrance-ubuntu
terrance@terrance-XU2604:~$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
terrance@terrance-ubuntu:~$ sudo lshw -C network
[sudo: authenticate] Password:
*-network
description: Wireless interface
product: MT7922 802.11ax PCI Express Wireless Network Adapter
vendor: MEDIATEK Corp.
physical id: 0
bus info: pci@0000:29:00.0
logical name: wlan0
version: 00
serial: 04:68:74:9e:f2:b3
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=mt7921e driverversion=7.0.0-15-generic firmware=____000000-20260224103233 latency=0 link=no multicast=yes wireless=IEEE 802.11
resources: iomemory:7f0-7ef irq:89 memory:7ff2100000-7ff21fffff memory:fc200000-fc207fff
*-network UNCLAIMED
description: Ethernet controller
product: RTL8125 2.5GbE Controller
vendor: Realtek Semiconductor Co., Ltd.
physical id: 0
bus info: pci@0000:2a:00.0
version: 05
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress msix vpd cap_list
configuration: latency=0
resources: ioport:1000(size=256)
terrance@terrance-ubuntu:~$ cat /etc/NetworkManager/NetworkManager.conf
[main]
plugins=ifupdown,keyfile
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
terrance@terrance-ubuntu:~$ lspci | grep -i ethernet
2a:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
I have an NVIDIA GeForce RTX 2070 SUPER, and until around October/November last year it had never caused me any problems on any Ubuntu release since 22.04. For quite a while everything worked fine, with no freezes or system lockups, however, with Ubuntu 25.04 I started having GPU compatibility issues, so I went back to Ubuntu 24.04. Since then and especially since late 2025, I've been experiencing intermittent full system freezes.
The issue does not seem to be tied to any specific application: it can happen with any program. It usually happens after a few hours of normal use, but it has also happened after several hours of idling with LibreOffice and/or Firefox open.
So far, NVIDIA driver 535 seems to have improved things somewhat, but it has not completely solved the problem.
My main question is whether this points to a known compatibility problem between my GPU, the NVIDIA drivers, and recent Ubuntu releases, and especially whether Ubuntu 26.04 could cause similar stability problems with this card.
I’d like to know:
whether anyone with an RTX 2070 SUPER has seen similar behavior on recent Ubuntu releases.
whether the 535 driver series has known issues with certain kernels or Ubuntu versions.
whether Ubuntu 26.04 is likely to improve or worsen this kind of issue.
what additional information would be most useful to diagnose it properly.
I can provide more technical details if needed, such as: exact kernel version, nvidia-smi output, dmesg, journalctl, or any other logs that may help identify the cause.
Every time I launch software-properties-qt on Kubuntu 26.04, it immediately crashes. Today when I tried opening software-properties-qt, it didn't work and I got syntax errors.
andygl@hp15s:~$ sudo GDK_BACKEND=wayland software-properties-qt
Traceback (most recent call last):
File "/usr/bin/software-properties-qt", line 130, in <module>
app = SoftwarePropertiesQt(datadir=data_dir, options=options, file=afile, attachWinID=attachWinID)
File "/usr/lib/python3/dist-packages/softwareproperties/qt/SoftwarePropertiesQt.py", line 164, in __init__
self.show_distro()
~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3/dist-packages/softwareproperties/qt/SoftwarePropertiesQt.py", line 376, in show_distro
child.setCheckState(Qt.PartiallyChecked)
^^^^^^^^^^^^^^^^^^^
AttributeError: type object 'Qt' has no attribute 'PartiallyChecked'
I have to note that even after trying running it with Wayland or x11 back-end it didn't help.
When I use pkexec instead same issue as many many other bug reports in the past
andygl@hp15s:~$ pkexec software-properties-qt
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, minimalegl, wayland-brcm, wayland-egl, wayland, vnc, minimal, linuxfb, vkkhrdisplay, xcb, offscreen.
Aborted (core dumped) pkexec software-properties-qt
andygl@hp15s:~$
I also filed a bug report See here
I have the standard version of Ubuntu installed (version 24.04), but I tried the Ubuntu Studio ISO and I liked it, so I'd like to install the theme. I don't need the audio and video editing software plus I don't want to reinstall my apps, so how do I install only the theme without installing all the apps that I don't need. There was an icon near the clock that I couldn't get rid of.
Lately kde discover has been verry laggy particularly when clicking the installed apps tab or when clicking an app from the home section too early. Also It failes to show screenshots for apps comming from the ubuntu source. I tried debugging it and this is what i got
looking up wrong category or too early "Development"
org.kde.plasma.libdiscover: CategoriesReader: Load categories from file "/usr/share/libdiscover/categories/flatpak-backend-categories.xml" with l10n true
org.kde.plasma.libdiscover: CategoriesReader: Couldn't find a category for "fwupd-backend"
org.kde.plasma.libdiscover: CategoriesReader: Load categories from file "/usr/share/libdiscover/categories/packagekit-backend-categories.xml" with l10n true
org.kde.plasma.libdiscover: CategoriesReader: Couldn't find a category for "snap-backend"
qt.qpa.services: Failed to register with host portal QDBusError("org.freedesktop.portal.Error.Failed", "Could not register app ID: Connection already associated with an application ID")
PackageKitBackend: No distro component found for "com.ubuntu.ubuntu"
fwupd: Device not supported: UEFI dbx No releases found
AppStreamIntegration: No distro component found for "com.ubuntu.ubuntu"
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:19:1: QML ApplicationPage: Created graphical object was not placed in the graphics scene.
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:116:5: QML ReviewsPage: Binding loop detected for property "implicitHeight":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:139:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:116:5: QML ReviewsPage: Binding loop detected for property "y":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:117:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:116:5: QML ReviewsPage: Binding loop detected for property "implicitHeight":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:139:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:923:5: QML AddonsView: Binding loop detected for property "implicitHeight":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:139:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:923:5: QML AddonsView: Binding loop detected for property "y":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:117:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:116:5: QML ReviewsPage: Binding loop detected for property "y":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:117:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:116:5: QML ReviewsPage: Binding loop detected for property "implicitHeight":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:139:5
qrc:/qt/qml/org/kde/discover/qml/ApplicationPage.qml:923:5: QML AddonsView: Binding loop detected for property "implicitHeight":
qrc:/qt/qml/org/kde/kirigami/templates/OverlaySheet.qml:139:5
qrc:/qt/qml/org/kde/kirigami/controls/private/PrivateActionToolButton.qml:74:5: QML Binding: Binding loop detected for property "value":
qrc:/qt/qml/org/kde/kirigami/controls/private/PrivateActionToolButton.qml:77:9
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:161:33: QML QQuickImage: SSL handshake failed: The certificate has expired
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:161:33: QML QQuickImage: SSL handshake failed: The certificate has expired
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:161:33: QML QQuickImage: SSL handshake failed: The certificate has expired
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:184:33: QML QQuickImage: SSL handshake failed: The certificate has expired
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:184:33: QML QQuickImage: SSL handshake failed: The certificate has expired
qrc:/qt/qml/org/kde/discover/qml/CarouselDelegate.qml:184:33: QML QQuickImage: SSL handshake failed: The certificate has expired
org.kde.plasma.libdiscover: reviews arrived... 0 861
Here are the steps I tried taking to fix it:
sudo rm -rf /var/cache/appstream/*
851 clear
852 sudo apt update --fix-missing
853 sudo appstreamcli refresh --force
854 sudo pkill -f packagekitd
855 sudo rm -rf /var/cache/PackageKit/*
856 pkcon refresh force
857 rm -rf ~/.cache/discover
858 rm -rf ~/.cache/PackageKit
859 sudo appstreamcli refresh --force
860 sudo apt install packagekit packagekit-tools plasma-discover-backend-packageki
861 sudo apt install packagekit packagekit-tools plasma-discover-backend-packagekit
867 sudo apt update
868 sudo apt install --reinstall appstream appstream-q
I have to note that it was always that slow on installed tab from possibly the day I upgraded but most of my attempts didnt work
I am experiencing severe Input/Output errors and filesystem crashes on a recently installed NVMe. The drive works perfectly when under continuous, light load, but completely drops its connection to the motherboard during heavy loads or after waking from system sleep/suspend.
Specs:
OS: Ubuntu 26.04 LTS (Resolute Raccoon) x86_64
Hardware: Lenovo IdeaPad 3 15IAU7
CPU: 12th Gen Intel Core i3-1215U
RAM: 8GB
Kernel: Linux 7.0.0-15-generic
Storage device: FORESEE 512GB NVMe (installed 3 weeks ago)
Symptoms:
Sleep/wake crash (the main issue): If I leave the laptop idle long enough for it to go into deep sleep/suspend, waking it up causes an immediate system lockup. I get dropped to a black screen with a wall of errors indicating the drive has vanished:
EXT4-fs error (device nvme0n1p2)
journal has aborted
Buffer I/O error on dev nvme0n1p2, logical block...
Heavy load drops: When running heavy tasks (like a Node.js project with many browser tabs open), maxing out the physical RAM forces the system to use the SSD for Swap. During this, background services randomly crash (my Wi-Fi drops out, or the audio server crashes and my mic stops working).
Active idle crashes: Initially, the system was also throwing systemd-journald: Failed to write entry I/O errors during active use.
I tried:
Tested hardware health: I ran the motherboard's built-in diagnostic and checked the S.M.A.R.T. data. The drive passes with 0 critical warnings, 0 media/data integrity errors, and 100% health. The physical memory chips seem perfectly fine.
Reseated the drive: I opened the laptop and physically reseated the NVMe drive to rule out a loose connection.
Applied APST workaround: To fix the active idle crashes, I added nvme_core.default_ps_max_latency_us=0 to my GRUB parameters. This successfully stopped the crashes while the screen is on, but it did not fix the deep suspend/wake issue.
It seems the controller firmware on this FORESEE NVMe drive fundamentally fails to handle Linux power state transitions (specifically waking from system suspend). Aside from completely disabling sleep mode or buying a Western Digital/Samsung drive, are there any other kernel parameters (like disabling specific PCIe power management features) that can force this specific SSD controller to wake up properly?
I made a list on the bash with all the packages installed on Ubuntu.
Trying to restore them to another computer also with Ubuntu, I receive an error message saying that they are not on database.
With this command I made the list:
dpkg --get-selections > list_packages.txt
Then I imported the selection list to the package manager with this command:
sudo dpkg --set-selections < list_packages.txt
Finally, I tried to install the packages with this command:
sudo apt-get dselect-upgrade
There, the message says: packages not in database.
Trying to install them on dissimilar hardware with the same Operating System, I acknowledge the solution.
I'm using rEFInd as my boot manager and I want to boot Ubuntu 26.04 directly by loading the kernel (vmlinuz), bypassing GRUB entirely and without displaying the GRUB menu. I tried several setup and examples but with no sucess. I don't want to remove grub but just skip it at boot. I need generic rEFInd loader that does not hardcode a kernel version, to always load the latest kernel.
Ubuntu 26.04 on EFI rEFInd installed from repo
$ lsblk -f
nvme0n1
├─nvme0n1p1
│ vfat FAT32 xxx 181M 40% /boot/efi
├─nvme0n1p2
│ ext4 1.0 ubuntu xxx 101,6G 18% /
$ ls -alh /boot
total 232M
drwxr-xr-x 4 root root 4.0K May 16 17:23 .
drwxr-xr-x 19 root root 4.0K Apr 29 19:44 ..
-rw------- 1 root root 11M Apr 13 10:12 System.map-7.0.0-14-generic
-rw------- 1 root root 11M Apr 22 16:02 System.map-7.0.0-15-generic
-rw-r--r-- 1 root root 302K Apr 13 10:12 config-7.0.0-14-generic
-rw-r--r-- 1 root root 302K Apr 22 16:02 config-7.0.0-15-generic
drwxr-xr-x 4 root root 4.0K Jan 1 1970 efi
drwxr-xr-x 5 root root 4.0K May 22 17:24 grub
lrwxrwxrwx 1 root root 27 Apr 29 19:44 initrd.img -> initrd.img-7.0.0-15-generic
-rw------- 1 root root 89M Apr 29 17:59 initrd.img-7.0.0-14-generic
-rw------- 1 root root 89M May 16 17:23 initrd.img-7.0.0-15-generic
lrwxrwxrwx 1 root root 27 Apr 23 02:48 initrd.img.old -> initrd.img-7.0.0-14-generic
-rw-r--r-- 1 root root 153K Nov 29 09:22 mt86+ia32
-rw-r--r-- 1 root root 158K Nov 29 09:22 mt86+x64
-rw-r--r-- 1 root root 252 May 4 16:42 refind_linux.conf
lrwxrwxrwx 1 root root 24 Apr 29 19:44 vmlinuz -> vmlinuz-7.0.0-15-generic
-rw------- 1 root root 17M Apr 27 18:30 vmlinuz-7.0.0-14-generic
-rw------- 1 root root 17M Apr 22 16:05 vmlinuz-7.0.0-15-generic
lrwxrwxrwx 1 root root 24 Apr 23 02:48 vmlinuz.old -> vmlinuz-7.0.0-14-generic
What I've tried, adding in /boot/efi/EFI/refind/refind.conf
menuentry "Ubuntu" {
volume "UUID of EFI partition"
loader /vmlinuz
initrd /initrd
options "root=UUID="UUID of Ubuntu partition" ro quiet splash"
}
menuentry "Ubuntu" {
volume "UUID of EFI partition"
loader /boot/vmlinuz
initrd /boot/initrd
options "root=UUID="UUID of Ubuntu partition" ro quiet splash"
}
menuentry "Ubuntu" {
volume "UUID of EFI partition"
loader /boot/efi/vmlinuz
initrd /boot/efi/initrd
options "root=UUID="UUID of Ubuntu partition" ro quiet splash"
}
I have a HP OfficeJet Pro 8500 that HP stopped supporting in Mac OS and Windows.
The printer works fabulously from Ubuntu with the HP supported driver.
I have been PDF'ing files and sharing to the Ubuntu device which has an automation to print any new files in a folder.
Can I do this better? I.e. have a driver that will print from latest Windows and MacOS rather than the faff of PDFing first?
I'd like my wife to just be able to hit file, print and be able to choose colour/bw and quality as with any other printer.
Today I upgraded to Kubuntu 26.04.
Moving my mouse coursor onto my second monitor using Wayland (Plasma) will permanently freeze the video output. This also happens in the login screen. I am able to circumvent it by using awesome-wm, but strongly prefer plasma. And it only occures when moving the mouse coursor there, having applications open and using keyboard shortcuts does not trigger it. Disabling the internal screen and just using the external one also does not help.
System is still running, as I am able to ssh in and reboot it.
I am on an optimus notebook with a 1060 6GB with kernel 7.0.0-14-generic, the following appears in the syslog:
2026-04-28T20:44:45.473990+02:00 notebook kernel: BUG: kernel NULL pointer dereference, address: 0000000000000028
2026-04-28T20:44:45.474007+02:00 notebook kernel: #PF: supervisor read access in kernel mode
2026-04-28T20:44:45.474009+02:00 notebook kernel: #PF: error_code(0x0000) - not-present page
2026-04-28T20:44:45.474009+02:00 notebook kernel: PGD 800000013626e067 P4D 800000013626e067 PUD 0
2026-04-28T20:44:45.474018+02:00 notebook kernel: Oops: Oops: 0000 [#1] SMP PTI
2026-04-28T20:44:45.474018+02:00 notebook kernel: CPU: 5 UID: 1000 PID: 2469 Comm: kwin_wayland Tainted: P OE 7.0.0-14-generic #14-Ubuntu PREEMPT(lazy)
2026-04-28T20:44:45.474019+02:00 notebook kernel: Tainted: [P]=PROPRIETARY_MODULE, [O]=OOT_MODULE, [E]=UNSIGNED_MODULE
2026-04-28T20:44:45.474019+02:00 notebook kernel: Hardware name: Notebook N85_87HP6/N85_87HP6, BIOS 1.05.08RTM 08/08/2017
2026-04-28T20:44:45.474020+02:00 notebook kernel: RIP: 0010:_nv000582kms+0x4/0x10 [nvidia_modeset]
2026-04-28T20:44:45.474020+02:00 notebook kernel: Code: 87 50 01 00 00 20 20 2d c8 48 c7 87 38 01 00 00 70 1e 2d c8 48 c7 87 40 01 00 00 40 22 2d c8 c3 66 0f 1f 44 00 00 f3 0f 1e fa <0f> b6 47 28 c3 0f 1f 80 00 00 00 00 89 c9 48 8d 04 49 48 c1 e0 04
2026-04-28T20:44:45.474021+02:00 notebook kernel: RSP: 0018:ffffd54649d13af0 EFLAGS: 00010293
2026-04-28T20:44:45.474021+02:00 notebook kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffc82d2660
2026-04-28T20:44:45.474022+02:00 notebook kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
2026-04-28T20:44:45.474022+02:00 notebook kernel: RBP: ffffd54649d13bb0 R08: 0000000000000000 R09: 0000000000000000
2026-04-28T20:44:45.474022+02:00 notebook kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8e0a87433500
2026-04-28T20:44:45.474023+02:00 notebook kernel: R13: ffffd54649d13b38 R14: ffff8e0a87433508 R15: 0000000000000000
2026-04-28T20:44:45.474023+02:00 notebook kernel: FS: 000075158ac2de80(0000) GS:ffff8e0e6a080000(0000) knlGS:0000000000000000
2026-04-28T20:44:45.474024+02:00 notebook kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
2026-04-28T20:44:45.474024+02:00 notebook kernel: CR2: 0000000000000028 CR3: 000000017739e005 CR4: 00000000003706f0
2026-04-28T20:44:45.474024+02:00 notebook kernel: Call Trace:
2026-04-28T20:44:45.474025+02:00 notebook kernel: <TASK>
2026-04-28T20:44:45.474025+02:00 notebook kernel: ? nv_drm_framebuffer_create+0x2fa/0x760 [nvidia_drm]
2026-04-28T20:44:45.474026+02:00 notebook kernel: drm_internal_framebuffer_create+0x100/0x210
2026-04-28T20:44:45.474026+02:00 notebook kernel: drm_mode_addfb2+0x51/0x120
2026-04-28T20:44:45.474027+02:00 notebook kernel: ? __pfx_drm_prime_fd_to_handle_ioctl+0x10/0x10
2026-04-28T20:44:45.474027+02:00 notebook kernel: ? __pfx_drm_mode_addfb2_ioctl+0x10/0x10
2026-04-28T20:44:45.474027+02:00 notebook kernel: drm_mode_addfb2_ioctl+0xe/0x20
2026-04-28T20:44:45.474028+02:00 notebook kernel: drm_ioctl_kernel+0xb5/0x110
2026-04-28T20:44:45.474028+02:00 notebook kernel: drm_ioctl+0x309/0x5f0
2026-04-28T20:44:45.474028+02:00 notebook kernel: ? __pfx_drm_mode_addfb2_ioctl+0x10/0x10
2026-04-28T20:44:45.474029+02:00 notebook kernel: nv_drm_ioctl+0x38/0x3f0 [nvidia_drm]
2026-04-28T20:44:45.474029+02:00 notebook kernel: ? __x64_sys_ioctl+0xbd/0x100
2026-04-28T20:44:45.474030+02:00 notebook kernel: __x64_sys_ioctl+0xa3/0x100
2026-04-28T20:44:45.474030+02:00 notebook kernel: ? putname+0x41/0x90
2026-04-28T20:44:45.474030+02:00 notebook kernel: x64_sys_call+0x103b/0x2390
2026-04-28T20:44:45.474031+02:00 notebook kernel: do_syscall_64+0x115/0x5a0
2026-04-28T20:44:45.474043+02:00 notebook kernel: ? __x64_sys_openat+0x5f/0xa0
2026-04-28T20:44:45.474044+02:00 notebook kernel: ? arch_exit_to_user_mode_prepare.isra.0+0xd/0xe0
2026-04-28T20:44:45.474044+02:00 notebook kernel: ? do_syscall_64+0x150/0x5a0
2026-04-28T20:44:45.474045+02:00 notebook kernel: ? sysvec_apic_timer_interrupt+0x54/0xd0
2026-04-28T20:44:45.474045+02:00 notebook kernel: entry_SYSCALL_64_after_hwframe+0x76/0x7e
2026-04-28T20:44:45.474046+02:00 notebook kernel: RIP: 0033:0x751591732cbd
2026-04-28T20:44:45.474046+02:00 notebook kernel: Code: 04 25 28 00 00 00 48 89 45 c8 31 c0 48 8d 45 10 c7 45 b0 10 00 00 00 48 89 45 b8 48 8d 45 d0 48 89 45 c0 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1a 48 8b 45 c8 64 48 2b 04 25 28 00 00 00
2026-04-28T20:44:45.474046+02:00 notebook kernel: RSP: 002b:00007ffe69e33c10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
2026-04-28T20:44:45.474047+02:00 notebook kernel: RAX: ffffffffffffffda RBX: 00007ffe69e33df4 RCX: 0000751591732cbd
2026-04-28T20:44:45.474048+02:00 notebook kernel: RDX: 00007ffe69e33ca0 RSI: 00000000c06864b8 RDI: 0000000000000101
2026-04-28T20:44:45.474049+02:00 notebook kernel: RBP: 00007ffe69e33c60 R08: 00007ffe69e33e50 R09: 00006223a6af1ca8
2026-04-28T20:44:45.474050+02:00 notebook kernel: R10: 0000751594f2769b R11: 0000000000000246 R12: 00007ffe69e33ca0
2026-04-28T20:44:45.474051+02:00 notebook kernel: R13: 00000000c06864b8 R14: 0000000000000101 R15: 00006223a6af1c70
2026-04-28T20:44:45.474052+02:00 notebook kernel: </TASK>
2026-04-28T20:44:45.474066+02:00 notebook kernel: Modules linked in: ccm udp_diag ib_core tcp_diag inet_diag xt_conntrack xt_MASQUERADE bridge stp llc xfrm_user xfrm_algo xt_set ip_set nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 xt_addrtype nft_compat x_tables nf_tables vxlan ip6_udp_tunnel udp_tunnel rfcomm snd_seq_dummy snd_hrtimer overlay vboxnetadp(OE) qrtr vboxnetflt(OE) cmac algif_hash algif_skcipher af_alg bnep vboxdrv(OE) ccp binfmt_misc nvidia_uvm(PO) intel_rapl_msr intel_rapl_common intel_uncore_frequency intel_uncore_frequency_common snd_hda_codec_intelhdmi nvidia_drm(PO) nvidia_modeset(PO) intel_tcc_cooling snd_hda_codec_alc269 x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek_lib snd_hda_scodec_component snd_hda_codec_nvhdmi snd_hda_codec_generic snd_hda_codec_hdmi snd_soc_avs kvm_intel snd_soc_hda_codec iwlmvm snd_hda_intel snd_hda_ext_core snd_hda_codec snd_hda_core snd_intel_dspcfg snd_intel_sdw_acpi snd_hwdep snd_seq_midi kvm mac80211 snd_seq_midi_event snd_soc_core uvcvideo videobuf2_vmalloc uvc irqbypass
2026-04-28T20:44:45.474067+02:00 notebook kernel: snd_compress ac97_bus libarc4 rapl videobuf2_memops ee1004 btusb btmtk nvidia(PO) mei_hdcp mei_pxp intel_cstate snd_rawmidi snd_pcm_dmaengine mxm_wmi iwlwifi videobuf2_v4l2 videobuf2_common i2c_i801 snd_seq i2c_smbus btrtl videodev snd_pcm btbcm btintel snd_seq_device i915 i2c_mux cfg80211 mc bluetooth drm_buddy nls_iso8859_1 snd_timer drm_display_helper snd cec mei_me soundcore rc_core drm_ttm_helper ttm mei i2c_algo_bit intel_pmc_core pmt_telemetry pmt_discovery pmt_class intel_pmc_ssram_telemetry intel_vsec acpi_pad input_leds joydev mac_hid sch_fq_codel parport_pc lp ppdev coretemp parport msr nvme_fabrics efi_pstore nfnetlink dmi_sysfs autofs4 wacom hid_generic usbhid hid psmouse nvme rtsx_pci_sdmmc serio_raw ghash_clmulni_intel r8169 nvme_core nvme_keyring nvme_auth hkdf realtek rtsx_pci video ahci wmi libahci aesni_intel
2026-04-28T20:44:45.474068+02:00 notebook kernel: CR2: 0000000000000028
2026-04-28T20:44:45.474068+02:00 notebook kernel: ---[ end trace 0000000000000000 ]---
2026-04-28T20:44:45.474069+02:00 notebook kernel: RIP: 0010:_nv000582kms+0x4/0x10 [nvidia_modeset]
2026-04-28T20:44:45.474070+02:00 notebook kernel: Code: 87 50 01 00 00 20 20 2d c8 48 c7 87 38 01 00 00 70 1e 2d c8 48 c7 87 40 01 00 00 40 22 2d c8 c3 66 0f 1f 44 00 00 f3 0f 1e fa <0f> b6 47 28 c3 0f 1f 80 00 00 00 00 89 c9 48 8d 04 49 48 c1 e0 04
2026-04-28T20:44:45.474071+02:00 notebook kernel: RSP: 0018:ffffd54649d13af0 EFLAGS: 00010293
2026-04-28T20:44:45.474071+02:00 notebook kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffc82d2660
2026-04-28T20:44:45.474098+02:00 notebook kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
2026-04-28T20:44:45.474099+02:00 notebook kernel: RBP: ffffd54649d13bb0 R08: 0000000000000000 R09: 0000000000000000
2026-04-28T20:44:45.474100+02:00 notebook kernel: R10: 0000000000000000 R11: 0000000000000000 R12: ffff8e0a87433500
2026-04-28T20:44:45.474101+02:00 notebook kernel: R13: ffffd54649d13b38 R14: ffff8e0a87433508 R15: 0000000000000000
2026-04-28T20:44:45.474102+02:00 notebook kernel: FS: 000075158ac2de80(0000) GS:ffff8e0e6a080000(0000) knlGS:0000000000000000
2026-04-28T20:44:45.474103+02:00 notebook kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
2026-04-28T20:44:45.474104+02:00 notebook kernel: CR2: 0000000000000028 CR3: 000000017739e005 CR4: 00000000003706f0
2026-04-28T20:44:45.474105+02:00 notebook kernel: note: kwin_wayland[2469] exited with irqs disabled
2026-04-28T20:44:45.482324+02:00 notebook kwin_wayland_wrapper[2469]: kwin_scene_opengl: Invalid framebuffer status: "GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT"
Ouput of swapon
NAME TYPE SIZE USED PRIO
/dev/sda1 partition 7,5G 0B -1
Output of dpkg -l *nvidia* | grep ii
ii libnvidia-cfg1-580:amd64 580.142-0ubuntu3 amd64 NVIDIA binary OpenGL/GLX configuration library
ii libnvidia-common-580:i386 580.142-0ubuntu3 i386 Shared files used by the NVIDIA libraries
ii libnvidia-compute-580:amd64 580.142-0ubuntu3 amd64 NVIDIA libcompute package
ii libnvidia-compute-580:i386 580.142-0ubuntu3 i386 NVIDIA libcompute package
ii libnvidia-decode-580:amd64 580.142-0ubuntu3 amd64 NVIDIA Video Decoding runtime libraries
ii libnvidia-decode-580:i386 580.142-0ubuntu3 i386 NVIDIA Video Decoding runtime libraries
ii libnvidia-egl-wayland1:amd64 1:1.1.21-1 amd64 Wayland EGL External Platform library -- shared library
ii libnvidia-egl-wayland1:i386 1:1.1.21-1 i386 Wayland EGL External Platform library -- shared library
ii libnvidia-encode-580:amd64 580.142-0ubuntu3 amd64 NVENC Video Encoding runtime library
ii libnvidia-encode-580:i386 580.142-0ubuntu3 i386 NVENC Video Encoding runtime library
ii libnvidia-extra-580:amd64 580.142-0ubuntu3 amd64 Extra libraries for the NVIDIA driver
ii libnvidia-fbc1-580:amd64 580.142-0ubuntu3 amd64 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-fbc1-580:i386 580.142-0ubuntu3 i386 NVIDIA OpenGL-based Framebuffer Capture runtime library
ii libnvidia-gl-580:amd64 580.142-0ubuntu3 amd64 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii libnvidia-gl-580:i386 580.142-0ubuntu3 i386 NVIDIA OpenGL/GLX/EGL/GLES GLVND libraries and Vulkan ICD
ii linux-firmware-nvidia-graphics 20260319.git217ca6e4-0ubuntu1 all Firmware for Nvidia graphics
ii linux-modules-nvidia-580-7.0.0-14-generic 7.0.0-14.14 amd64 Linux kernel nvidia modules for version 7.0.0-14
ii linux-modules-nvidia-580-generic 7.0.0-14.14 amd64 Extra drivers for nvidia-580 for the generic flavour
ii linux-objects-nvidia-580-7.0.0-14-generic 7.0.0-14.14 amd64 Linux kernel nvidia modules for version 7.0.0-14 (objects)
ii linux-signatures-nvidia-7.0.0-14-generic 7.0.0-14.14 amd64 Linux kernel signatures for nvidia modules for version 7.0.0-14-generic
ii nvidia-compute-utils-580 580.142-0ubuntu3 amd64 NVIDIA compute utilities
ii nvidia-driver-580 580.142-0ubuntu3 amd64 NVIDIA driver metapackage
ii nvidia-firmware-580-580.142 580.142-0ubuntu3 amd64 Firmware files used by the kernel module
ii nvidia-kernel-common-580 580.142-0ubuntu3 amd64 Shared files used with the kernel module
ii nvidia-kernel-source-580 580.142-0ubuntu3 amd64 NVIDIA kernel source package
ii nvidia-prime 0.8.17.2build1 all Tools to enable NVIDIA's Prime
ii nvidia-settings 510.47.03-0ubuntu7 amd64 Tool for configuring the NVIDIA graphics driver
ii nvidia-utils-580 580.142-0ubuntu3 amd64 NVIDIA driver support binaries
ii xserver-xorg-video-nvidia-580 580.142-0ubuntu3 amd64 NVIDIA binary Xorg driver
/var/crash/ is empty
prime-select is on nvidia. I should not that I can switch to intel, but that also disables the HDMI port, so the problem cannot be replicated then.
Adding KWIN_FORCE_SW_CURSOR=1 to /etc/environment does not help.
How do you fix the mouse wheel acting insane?
Whenever I tab back a browser window with a scrollable pane, and scroll using my mouse, the window scroll position often "jumps" wildly. Meaning, I might turn the mouse scroll wheel one click, but the window acts like I scrolled 100,000 clicks and jumps me pages up or pages down.
At first I thought it was just some buggy mouse, but I've tried multiple wireless mice, and it happens with all of them, so I have to assume it's some weird event issue in Gnome.
I've found if I first click on a dead area of the screen to ensure that window is explicitly in focus and then scroll, then scrolling works normally.
Anyone else notice this behavior? I'm running Ubuntu 22.04, although it happened in 20.04 too.
Usually you'd have the source code somewhere like in a GitHub repository, then you would run some CI/CD pipelines to create a release. Where is that source code? I did some research and many people say that the Ubuntu distribution is just a collection of programs and configurations and that it doesn't really make much sense to have a repository like I'm describing, but that's not what I am asking.
When you develop a web app with Node.js, you have your dependencies listed in a file called package.json. When you build your web app you download your dependencies. I assume something similar happens with Ubuntu: There must be a file somewhere listing all programs that the distribution must include and the URLs to download each binary. Where is that file? Where exactly is also the script that downloads them? In GitHub you have a .yaml file with different GitHub actions that you can look at to understand the exact steps followed to create a release.
Where do I look at to understand exactly how the Ubuntu iso is created? Let's just say it was my responsibility to create the next release. How would I do that? And the one thing I am most worried about is: If Ubuntu is open source, where is all this documented?
This is a list of the questions that I pretended to have answered with this post. If this post is considered too broad because of this and gets closed, I'll post these questions in different posts:
Here is some context: Usually, when I want to understand how some software works, I build the software from source code. The steps followed to build from source are usually either in a README or a CONTRIBUTING file. When I can't find these files, I look at whatever yaml file they use to configure their pipelines to create releases. I wondered how an operating system like Ubuntu is created, so I started looking for such repository but found nothing. I just learned that the packages the iso includes are specified in a manifest file like this one, but I still couldn't find the Git repository where this file comes from and I don't know if that's about it or if there is more involving the creating of an Ubuntu iso. I hardly believe that you only need the manifest file, it doesn't feel like installing all packages specified in it from a Debian distro would automatically turn that Debian into Ubuntu.
I came across this post, which led me to this website. If that's the source code of Ubuntu, how do I generate the iso file from the contents of that website? I couldn't find any README or CONTRIBUTING file explaining this.
When I hit Take Screenshot item from the Flameshot menu, now it pops what I guess is the native Ubuntu screenshot tool, instead of the Flameshot one.
To be fair, I don't know what was the update affecting it. All I know is that it has been working flawlessly for years and now it suddenly stopped working, and it makes me sad.
In case it helps:
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 22.04.3 LTS
Release: 22.04
Codename: jammy
BTW, it also happens if I use the console command:
$ flameshot gui
Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
Qt: Session management error: Could not open network socket
flameshot: error: Unable to capture screen
flameshot: error: Unable to capture screen
flameshot: info: Screenshot aborted.
I would provide a screenshot, but I don't like the native tool for doing that.
I'm on a bare-bones, minimum install of Ubuntu 22.04.02 LTS, 64-bit, on a pretty limited machine. With this minimum install, the syslog is filling up with error messages:
gnome-shell[4500]: gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed
gnome-shell[4500]: message repeated 277 times [ gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed]
gsd-media-keys[4627]: gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed
gsd-media-keys[4627]: message repeated 277 times [ gvc_mixer_card_get_index: assertion 'GVC_IS_MIXER_CARD (card)' failed]
over and over and over and over again. I have tried switching to Xorg as another users reported that this resulted in one (1) throw of the error, but I did that and there was no change. I had to limit the size of the syslog to prevent this from completely filling up my drive.
I'm very new to unix, so I'm not really sure how to find out what it is that is causing this error to endlessly repeat. I've Googled for information but don't find much that is later than 2022 (except for the one Xorg-related solution, which as mentioned did not work for me).
What commands, if any, can I use to track down the source of this error message? Thank you in advance!
When this is run,
#!/bin/bash
#
# located in /lib/systemd/system-sleep/
# Created 4/2/19
exec 2> /tmp/systemd_suspend_test_err.txt
if [ "${1}" = "pre" ]; then
# Do the thing you want before suspend here
echo "we are suspending $(date)." > /home/andy/Downloads/message.txt
elif [ "${1}" = "post" ]; then
# Do the thing you want after resume here
echo "and we are back from being suspended $(date)" >> /home/andy/Downloads/message.txt
#sleep 10
#notify-send "Computer is returning from suspend." -t 2000
gxmessage does NOT work and neither does inotify-send
/usr/bin/gxmessage -fg red -font 'sans 30' -timeout 3 'Back from being suspended.'
fi
I get this in /tmp/systemd_suspend_test_err.txt.
Unable to init server: Could not connect: Connection refused
gxmessage: unable to initialize GTK
I am trying to suppress network printers showing up under Settings/Devices/Printers on my Ubuntu 17.10 (Gnome) desktop. It's my desktop in my office and all the printers in this building appear under Settings/Devices/Printers.
I have edited /etc/cups/cups-browsed.conf as:
BrowseRemoteProtocols none
BrowseLocalProtocols none
BrowseProtocols none
and restarted the service.
$ sudo service cups-browsed restart
But if I go to settings/Devices/Printers, I still see all the network printers. Same even if I log out and then log in, or restart the system. But it is not that the modification to the cups-browsed.conf file is reset on reboot.
If I manually remove the printers from the Settings/Devices/Printers list (by clicking the gear button next to the "No Active Jobs" and Remove Printer), they are removed but come back on my next visit to the Printers tab. I think it is not intended that the "remove" operation is effective only while I stay inside the tab.
If I stop the cups-browsed as:
$ sudo service cups-browsed stop
or
$ sudo systemctl disable cups-browsed
Settings crashes and on re-opening the Settings/Devices/Printers tab, all the printers are again there.
For your information, there is only one printer visible in http://localhost:631/printers/ or in some of the printing dialogs. However, for example, the printing dialog in Chrome would show me tens of network printers.
How can I stop the system searching for network printers everytime I open Settings/Devices/Printers, or a printing dialog in Chrome?
When entering the sudo password, the • characters are hidden.
Apparently the • are omitted for better security. They seem secure enough to me, and I don't see why they're not used.
I think I'm missing something here...
Could anyone clarify?
I added the following command in crontab -e:
15 * * * * php /home/rizwan/PHP-workspace/mgstore/testcron.php
I need to run testcron.php every 15 minutes; for testing purposes I used the following PHP code in testcron.php:
<?php
echo "test";
15 * * * * /usr/bin/php /home/rizwan/PHP-workspace/mgstore/testcron.php >> /home/rizwan/cron.out
this was working .but i have one php script,for adding customers from magento to ERP,when i run script manually,it asks for authorization,after accepting it creates customers into ERP from magento,I need whenever i added customer in magento after 5 or 10 mins this script should run and add the customer to ERP.how this can be done ?,If any one have any idea,please help ?
I have an Nvidia GeForce 9800 GT card and suddenly after some recent updates on 12.04, I am unable to get my resolution higher than 1024x768. It used to be 1440x900. I have tried uninstalling and reinstalling the Nvidia drivers several times and ways, and still have not found any solution. My current driver version is 295.49 and it says my display is a CRT. I don't understand why it thinks I have a CRT. My monitor is a Samsung SyncMaster 940BW. Any help would be greatly appreciated. Thanks in advance!
UPDATE: I have a second computer that has now done this on the same monitor and it has a different graphics card. The second computer was affected immediately after applying the most recent updates for 12.04. Could this just be a bug in one of the updates? Are others experiencing similar problems with different types of graphics cards? Just a thought.
Also, on the first computer (Nvidia) I did a complete reinstall. The best I could get was 1024x768 after installing the Nvidia current drivers. I held off on updating the computer to see if I could get a higher resolution but I couldn't. Then I updated the fresh install with the latest 12.04 updates and now I can only get a resolution of 640x480. Any ideas? Both systems are running 12.04 64 bit.
Also, after the reinstall I'm currently running 295.40 version.
XRandR output:
$ cvt 1440 900 60
# 1440x900 59.89 Hz (CVT 1.30MA) hsync: 55.93 kHz; pclk: 106.50 MHz
Modeline "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 640 x 480, maximum 640 x 480
default connected 640x480+0+0 0mm x 0mm
640x480 50.0*
320x240 51.0
$ xrandr --newmode "1440x900_60.00" 106.50 1440 1528 1672 1904 900 903 909 934 -hsync +vsync
xrandr: Failed to get size of gamma for output default
$ xrandr
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 320 x 240, current 640 x 480, maximum 640 x 480
default connected 640x480+0+0 0mm x 0mm
640x480 50.0*
320x240 51.0
1440x900_60.00 (0x177) 106.5MHz
h: width 1440 start 1528 end 1672 total 1904 skew 0 clock 55.9KHz
v: height 900 start 903 end 909 total 934 clock 59.9Hz
$ xrandr --addmode default 1440x900_60.00
xrandr: Failed to get size of gamma for output default
$ xrandr --output default --mode 1440x900_60.00
xrandr: Failed to get size of gamma for output default
xrandr: screen cannot be larger than 640x480 (desired size 1440x900)
xorg.conf:
$ cat /etc/X11/xorg.conf
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 295.40 (buildmeister@swio-display-x86-rhel47-06.nvidia.com) Thu Apr 5 22:40:54 PDT 2012
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "Files"
EndSection
Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection