I'm working on a multiple monitor VR app, and after updating to Ubuntu 25.10 yesterday everything relating to monitor positioning seems to be broken.

Currently my layout looks like this.

a 4 b

3 2 5

c 6 d

1 is my physical monitor and it is disabled.

I double-click to open Steam. Nothing happens. I take screen 5 and drag it up slightly. Steam appears but it's in the center of a, 4, 3 and 2 so it's partially inside an invisible area. Clicking the sides to try and expand it does nothing, clicking the top and trying to drag it does nothing, clicking any of the links in it does nothing. Visually it looks fine, but functionally it's unresponsive.

The same thing happens with other apps like VLC. I open it, it appears on a screen. I drag it onto the correct screen and it becomes unresponsive. None of the buttons work and dragging it does nothing.

This did not happen on Ubuntu 24.04, and Googling it brings up nothing helpful.

Why are my windows unresponsive and appearing in weird places?

Here is a quick video showing VLC. Yes, I am clicking the buttons as I hover over them. You can see hover styles are not applying either indicating where something is selectable.

I tried running sudo apt update to try to update my system so I can try to install Wine and I got this:

pj@pj-PC:~$ sudo apt update
[sudo] password for pj: 
Get:1 file:/cdrom noble InRelease
Ign:1 file:/cdrom noble InRelease
Get:2 file:/cdrom noble Release
Err:2 file:/cdrom noble Release
  File not found - /cdrom/dists/noble/Release (2: No such file or directory)
Hit:3 http://archive.ubuntu.com/ubuntu noble InRelease
Hit:4 https://download.mono-project.com/repo/ubuntu stable-focal InRelease
Reading package lists... Done
E: The repository 'file:/cdrom noble 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.
N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://download.mono-project.com/repo/ubuntu stable-focal InRelease' doesn't support architecture 'i386'

I'm stupid and don't know what any of this means exactly. I can only take it to mean I can't get any system updates. Is that right?

How Do I Format a 64GB USB So I can down load the Time shift to it so If This (mint Mate ) O.S. crashes I have the USB to Get Me back To Where I should be To fix Why It Crashed in the First Place.

I am brand new to Linux. I am using a vintage Dell Inspiron 3541 with 8GB RAM and I installed a new 512GB SSD, AMD A6 Processor.

I am wondering if anyone else has had issues with Ubuntu Pro freezing up. It is very frustrating to click on a "News" item and the system freezes up. I have updated the drivers, etc. When I reverted back to Ubuntu the problem seems to have gone away.

I want to make dual boot on my PC: Windows/Ubuntu. Before I did so, I have tested Ubuntu from an USB stick. When I try to mount the C: drive, I get this error message:

Failed to mount "Windows-SSD"
Error mounting/dev/nvme0n1p3 at /media/ubuntu/Windows-SSD
Wrong fs type bad option, bad superblock on /dev/nvme0n1p3, missing codepage or helper program, or other error

When I check the drive in Windows, it appears as a simple NTFS filesystem with no problems. Encryption is disabled

Any Idea what can be wrong?

I want to be able to share file across the operating systems. Should I make an additional partition?

Does the problem have to due with booting from USB?

INFO:

• Linux Ubuntu 24.04.4 LTS
• Python - lib: hid
• SteelSeries Nova 5

I made a program that communicates with my headphones through HID, but I can only run it with sudo. I tried changing the device access rules to 0660, 0666, and other values recommended online by creating a new udev rule and adding it to plugdev (since my user is in that group).

I also tried making it accessible to everyone and directly to my user, but nothing worked. The permissions look correct, yet it still requires sudo to run.

When I plug in the device, these show up. I only use one interface, but in the end I tried moding all of them just to be sure:

/dev/hidraw9  
/dev/hidraw10  
/dev/hidraw11

When I check permissions, it looks fine:

crw-rw---- 1 root plugdev

This is the new rule I tried (without specifying the interface at the endt, to match all):

SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1038", ATTRS{idProduct}=="2232", ATTRS{bInterfaceNumber}=="03", MODE="0660", GROUP="plugdev"

I tried both restarting the system and running:

sudo udevadm control --reload  
sudo udevadm trigger

But it did not work.

Error:

# python
import hid

...

shome_device.open_path(the_path) # -> open failed

...

When I run it with sudo, everything works correctly and as expected.

Lexy

I had a PC with Ubuntu 20.04 and another with Ubuntu 22.04. I used to save my data on two external HDDs, exchanging them on the two PCs: A 2TB Toshiba and a 0,5TB TrekStor, both formatted as NTFS/exFAT/HPFS (the only difference is that the Toshiba one shows as "bootable" while the TrekStor doesn't).

A few days ago my Ubuntu 20.04 had a bug, and then I installed Ubuntu 24.04. After that, it doesn't work with the TrekStor drive showing a udisks-error-quark,0 error. Then I ran Disks in order to repair the file system, with success, but nevertheless now I receive error mounting - no such file or directory.

Please note the PC with the Ubuntu 22.04 still sees both external HDDs. It seems to be a Ubuntu 24.04 mounting problem.

Does Ubuntu 24.04 have different requirements for disk formatting or mounting? Are there any other reasons?

I got these error messages when trying to install VirtualBox in Ubuntu 24.04:

ERROR: Cannot create report: [Errno 17] File exists: '/var/crash/virtualbox-dkms.0.crash'
Error! Bad return status for module build on kernel: 6.17.0-14-generic (x86_64)
Consult /var/lib/dkms/virtualbox/7.0.16/build/make.log for more information.
dpkg: error processing package virtualbox-dkms (--configure):
 installed virtualbox-dkms package post-installation script subprocess returned error exit status 10
Errors were encountered while processing:
 virtualbox-dkms
E: Sub-process /usr/bin/dpkg returned an error code (1)

I'm new to Ubuntu, so please go easy on me.

i removed and reinstalled virtualbox and now i get these error messages:

The VirtualBox Linux kernel driver is either not loaded or not set up correctly. Please reinstall virtualbox-dkms package and load the kernel module by executing

'modprobe vboxdrv'

as root.

If your system has EFI Secure Boot enabled you may also need to sign the kernel modules (vboxdrv, vboxnetflt, vboxnetadp, vboxpci) before you can load them. Please see your Linux system's documentation for more information.

where: suplibOsInit what: 3 VERR_VM_DRIVER_NOT_INSTALLED (-1908) - The support driver is not installed. On linux, open returned ENOENT.

Can anyone help me to fix these issues please?

So I have a C++ command-line program that's using the Linux system() function to run things like ffmpeg. (I happen to be running kubuntu - the problem exists in ancient and recent versions - and in C as well as C++).

Program works great - but I can't control-C to kill it. Seems like the signal is either being eaten by the program running inside system() - or something similar.

A super-simple program to demonstrate this (I'm using bash/ubuntu) is as follows...

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

int main ()
{
  while ( true )
  {
    system ( "ls -l" ) ;   // Something mundane that consumes some time.
    fprintf(stderr, "Still running!\n" ) ;
  }
}

WARNING: If you're going to run it - you'll probably have to resort to a kill command from another window.

Presumably - the program running within system() is being killed by the ^-C - which is not propagated up to my parent script. If you add a sleep(5) into the loop - you can kill it 99% of the time because the ls -l isn't running when you do it.

Is there some kind of signal() magic that'll fix this?

I have a Lenovo ThinkPad T14s Gen 6 (AMD) running Ubuntu 24.04.4. After upgrading to kernel 6.17 and the latest linux-firmware yesterday, I still have Wifi connection but there are some other Wireless issues.

1. My laptop can only discover 2.4G networks. At home I have a dual-band router, but only the 2.4G one is listed.

2. My MX Master 3S becomes super laggy via bluetooth connection. (It works fine with the bolt connector.)

I am staying on 6.14 for now, where all the problems above don't exist. Any ideas on how to solve these issues? Thanks in advance.

> sudo lshw -class network

  *-network
       description: Ethernet interface
       product: WCN785x Wi-Fi 7(802.11be) 320MHz 2x2 [FastConnect 7800]
       vendor: Qualcomm Technologies, Inc
       physical id: 0
       bus info: pci@0000:c2:00.0
       logical name: wlp194s0
       version: 01
       serial: f4:4e:b4:b3:bb:73
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical
       configuration: broadcast=yes driver=ath12k_pci driverversion=6.14.0-37-generic firmware=N/A ip=10.130.79.53 latency=0 link=yes multicast=yes
       resources: irq:140 memory:b0600000-b07fffff
  *-network
       description: Ethernet interface
       physical id: f
       bus info: usb@8:1.3.1
       logical name: enx8c47be01dbea
       serial: 8c:47:be:01:db:ea
       capacity: 1Gbit/s
       capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.12.13 duplex=half firmware=rtl8153b-2 v2 04/27/23 link=no multicast=yes port=MII

> lspci

c2:00.0 Network controller: Qualcomm Technologies, Inc WCN785x Wi-Fi 7(802.11be) 320MHz 2x2 [FastConnect 7800] (rev 01)

With kernel 6.14.0:

> sudo nmcli -f ALL dev wifi
NAME    SSID                        SSID-HEX                                              BSSID              MODE   CHAN  FREQ      RATE        BANDWIDTH  SIGNAL  BARS  SECURITY   WPA-FLAGS                           RSN-FLAGS                           DEVICE    ACTIVE  IN-USE  DBUS-PATH                                        
AP[3]   cycc-2.4G                   637963632D322E3447                                    E4:60:4D:27:FD:F0  Infra  6     2437 MHz  270 Mbit/s  20 MHz     100     ▂▄▆█  WPA2 WPA3  (none)                              pair_ccmp group_ccmp psk sae        wlp194s0  no              /org/freedesktop/NetworkManager/AccessPoint/2945 
AP[7]   ChinaNet-zbFD               4368696E614E65742D7A624644                            10:B3:6F:0D:C3:18  Infra  11    2462 MHz  195 Mbit/s  20 MHz     79      ▂▄▆_  WPA2       (none)                              pair_ccmp group_ccmp psk            wlp194s0  no              /org/freedesktop/NetworkManager/AccessPoint/2953 
AP[8]   cycc                        63796363                                              E4:60:4D:27:FD:F1  Infra  48    5240 MHz  405 Mbit/s  160 MHz    79      ▂▄▆_  WPA2 WPA3  (none)                              pair_ccmp group_ccmp psk sae        wlp194s0  yes     *       /org/freedesktop/NetworkManager/AccessPoint/2910 
AP[11]  ChinaNet-zbFD-5G            4368696E614E65742D7A6246442D3547                      10:B3:6F:0D:C3:1C  Infra  157   5785 MHz  405 Mbit/s  80 MHz     55      ▂▄__  WPA2       (none)                              pair_ccmp group_ccmp psk            wlp194s0  no              /org/freedesktop/NetworkManager/AccessPoint/2947 

> iw reg get
global
country 00: DFS-UNSET
        (755 - 928 @ 2), (N/A, 20), (N/A), PASSIVE-SCAN
        (2402 - 2472 @ 40), (N/A, 20), (N/A)
        (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

phy#0 (self-managed)
country 00: DFS-UNSET
        (2402 - 2472 @ 40), (N/A, 20), (N/A)
        (2457 - 2482 @ 20), (N/A, 20), (N/A), PASSIVE-SCAN
        (5170 - 5330 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5735 - 5895 @ 160), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN

With kernel 6.17.0:

> sudo nmcli -f ALL dev wifi
NAME    SSID                  SSID-HEX                                  BSSID              MODE   CHAN  FREQ      RATE        BANDWIDTH  SIGNAL  BARS  SECURITY   WPA-FLAGS                           RSN-FLAGS                           DEVICE    ACTIVE  IN-USE  DBUS-PATH
AP[5]   cycc-2.4G             637963632D322E3447                        E4:60:4D:27:FD:F0  Infra  6     2437 MHz  270 Mbit/s  20 MHz     80      ▂▄▆_  WPA2 WPA3  (none)                              pair_ccmp group_ccmp psk sae        wlp194s0  yes     *       /org/freedesktop/NetworkManager/AccessPoint/1
AP[8]   ChinaNet-zbFD         4368696E614E65742D7A624644                10:B3:6F:0D:C3:18  Infra  11    2462 MHz  195 Mbit/s  20 MHz     67      ▂▄▆_  WPA2       (none)                              pair_ccmp group_ccmp psk            wlp194s0  no              /org/freedesktop/NetworkManager/AccessPoint/10

> iw reg get
global
country 00: DFS-UNSET
        (755 - 928 @ 2), (N/A, 20), (N/A), PASSIVE-SCAN
        (2402 - 2472 @ 40), (N/A, 20), (N/A)
        (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
        (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
        (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
        (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
        (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
        (57240 - 63720 @ 2160), (N/A, 0), (N/A)

phy#0 (self-managed)
country CN: DFS-FCC
        (2402 - 2482 @ 40), (N/A, 20), (N/A), NO-80MHZ, NO-160MHZ, NO-320MHZ
        (5170 - 5250 @ 80), (N/A, 23), (N/A), NO-OUTDOOR, AUTO-BW, NO-320MHZ
        (5250 - 5330 @ 80), (N/A, 23), (0 ms), NO-OUTDOOR, DFS, AUTO-BW, NO-320MHZ
        (5735 - 5835 @ 80), (N/A, 33), (N/A), AUTO-BW, NO-320MHZ

And yeah, only 2.4G Wifi can be found:

I am currently running regular Ubuntu 24.04.4 LTS on my Lenovo ThinkPad A275. For a Windows 10 or 11 install on the same machine, the trackpoint buttons behave as would the respective ones on a regular mouse (middle serving as middle mouse button). Running Ubuntu, the mouse buttons the trackpoint buttons correspond to remain the same, except instead of registering as a press when pressed (so the release is registered only when released, as with a regular mouse), they register as a click (so it artificially registers the button as having been released in around 10ms) --- which means that I cannot perform actions that one would usually require a button on a mouse to be pressed continuously. Here is an example event from libinput pertaining to the press (and continued holding) of a left trackpoint button:

-event7   POINTER_BUTTON          +28.939s  BTN_LEFT (272) pressed, seat count: 1
 event7   POINTER_BUTTON          +28.948s  BTN_LEFT (272) released, seat count: 0

releasing the button afterwards is not registered.

I wish to change this to correspond to standard mouse button presses again instead. Gnome tweaks did not provide any settings to address this, and it is not entirely clear to me how to use xinput or xbindkeys (or if one can easily use it in this case) to fix this. The trackpad buttons work as normal. Changing to synaptic or evdev drivers did not fix the issue.

It would also be nice to configure the middle trackpoint button to act as on Windows --- allowing one to scroll (including sideways) when holding it (it is partially configurable in firefox, say, but would be nice if it was useable across all programs) and moving the trackpoint.

Edit: Trackpoint entries from libinput list-devices:

Device:           TPPS/2 IBM TrackPoint
Kernel:           /dev/input/event7
Group:            8
Seat:             seat0, default
Capabilities:     pointer 
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: disabled
Calibration:      n/a
Scroll methods:   *button
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   flat *adaptive custom
Rotation:         n/a

The lines from demsg that mention the trackpoint are:

[    2.906081] psmouse serio2: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 3/3
[    3.125159] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/serio2/input/input8

...

[  143.664143] psmouse serio2: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 3/3

...

[  143.901076] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/serio2/input/input17

.

Ubuntu 24.04, gdb 15.0.50.20240403-0ubuntu1, gcc Ubuntu 13.2.0-23ubuntu4, all installed via apt from repo.

When I go into gdb (command-line or from my IDE) and run I get a whole bunch (20?) of

could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libglib-2.0.so.0

messages. This is really annoying. It did not happen at Ubuntu 22.04.

I have Googled but not found any way to suppress these messages. I will not have, and do not want/need, all these sundry library '.gnu_debugaltlink' files. Is there some way/setting these messages can be made not to appear?

P.S. As per @steeldriver's comment I already have set debuginfod enabled off as the only line in my ~/.gdbinit. And show debuginfod gives

(gdb) show debuginfod
debuginfod enabled:  Debuginfod functionality is currently set to "off".

Mind I notice it also says

debuginfod verbose:  Debuginfod verbose output is set to 1.

Maybe that needs to be changed...? Hmm, sadly not, just tried set debuginfod verbose 0, that takes OK but does not suppress the messages.

I encountered a problem when booting Ubuntu 20.04. After seeing the line /dev/nvme0n1p1 clean files, blocks, the screen goes blank and stays black. There's no error message or any indication of what's happening - just a blank screen. Normally I would see a loading screen followed by the login screen after this line, however in this case nothing happens. I haven't installed any new programs since the last time it was working. I am able to boot into Windows without any issues.

We used to find recent builds at https://partner-images.canonical.com/core/ but that last build available there now is from June of 2023. Since then, I would have expected newer versions to have been made available.

I found more recent builds of ubuntu-core but these downloads don't seem to include a rootfs tarball, which is what I'm looking for.

Are rootfs tarballs no longer being published for new builds anymore?

This is my first time asking anything here, so I have no clue how askubuntu works, I guess

I tried installing plocate, with hopes it would not take long. Multiple posts said it would take seconds, a couple minutes max. My ubuntu server install (22.04.1 LTS) has been installing plocate and stuck on initialization for 5 hours now. Is there any way to either cancel the installation, or skip the initialization? ctrl+c stops it, but apt just tells me to do sudo dpkg --configure -a, which brings me back to where i am now. Any help? I can't find this issue anywhere else.

After I accidentally created a GPT label on /dev/sdb, I need to fix the PV NAME "[unknown]" (which was /dev/sdb previously) :

$ sudo pvs
  PV         VG        Fmt  Attr PSize   PFree
  /dev/sda3  ubuntu-vg lvm2 a--  <69.00g    0
  /dev/sdb   ubuntu-vg lvm2 a--  <20.00g    0

on the second PV from ubuntu-vg VG :

$ sudo pvs -v
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  PV         VG        Fmt  Attr PSize   PFree DevSize PV UUID
  /dev/sda3  ubuntu-vg lvm2 a--  <69.00g    0  <79.00g 3CHhp6-yMvu-Fnqj-8usZ-EHp8-k88B-Jm8MK3
  [unknown]  ubuntu-vg lvm2 a-m  <20.00g    0       0  CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q
$ sudo vgreduce --removemissing --verbose /dev/ubuntu-vg
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  There are 1 physical volumes missing.
  Archiving volume group "ubuntu-vg" metadata (seqno 12).
  WARNING: Partial LV ubuntu-lv needs to be repaired or removed.
  There are still partial LVs in VG ubuntu-vg.
  To remove them unconditionally use: vgreduce --removemissing --force.
  WARNING: Proceeding to remove empty missing PVs.
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  There are 1 physical volumes missing.
  Creating volume group backup "/etc/lvm/backup/ubuntu-vg" (seqno 13).
$ sudo pvdisplay -m
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               ubuntu-vg
  PV Size               <69.00 GiB / not usable 1.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              17663
  Free PE               0
  Allocated PE          17663
  PV UUID               3CHhp6-yMvu-Fnqj-8usZ-EHp8-k88B-Jm8MK3

  --- Physical Segments ---
  Physical extent 0 to 17662:
    Logical volume      /dev/ubuntu-vg/ubuntu-lv
    Logical extents     0 to 17662

  --- Physical volume ---
  PV Name               [unknown]
  VG Name               ubuntu-vg
  PV Size               20.00 GiB / not usable 4.00 MiB
  Allocatable           yes (but full)
  PE Size               4.00 MiB
  Total PE              5119
  Free PE               0
  Allocated PE          5119
  PV UUID               CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q

  --- Physical Segments ---
  Physical extent 0 to 5118:
    Logical volume      /dev/ubuntu-vg/ubuntu-lv
    Logical extents     17663 to 22781

EDIT0 : This /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg contains the LVM metadata prior (from the 2nd of August) to my incident (the 12th of September), can I use it to fix this UUID pb. and if so, how ? :

$ sudo ll /etc/lvm/archive/
total 48
drwx------ 2 root root 4096 Sep 12 16:47 ./
drwxr-xr-x 5 root root 4096 Nov  3  2021 ../
-rw------- 1 root root 1310 Mar  8  2022 ubuntu-vg_00002-434733304.vg
-rw------- 1 root root 1347 Mar  8  2022 ubuntu-vg_00003-1070329593.vg
-rw------- 1 root root 1350 Jun 20 13:04 ubuntu-vg_00004-1689574179.vg
-rw------- 1 root root 1351 Jul  8 09:02 ubuntu-vg_00005-1407536141.vg
-rw------- 1 root root 1332 Aug  2 12:30 ubuntu-vg_00006-1483580564.vg
-rw------- 1 root root 1593 Aug  2 12:33 ubuntu-vg_00007-1330575295.vg
-rw------- 1 root root 1731 Sep 12 14:20 ubuntu-vg_00008-589825908.vg
-rw------- 1 root root 1731 Sep 12 14:20 ubuntu-vg_00009-1110009706.vg
-rw------- 1 root root 1767 Sep 12 15:58 ubuntu-vg_00010-1978053106.vg
-rw------- 1 root root 1777 Sep 12 16:47 ubuntu-vg_00011-663327121.vg
$ sudo cat /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg
        id = "Wljig7-1EmZ-HWx6-HD3a-abaR-tAc0-IGTYnj"
        seqno = 9
        format = "lvm2"                 # informational
        status = ["RESIZEABLE", "READ", "WRITE"]
        flags = []
        extent_size = 8192              # 4 Megabytes
        max_lv = 0
        max_pv = 0
        metadata_copies = 0

        physical_volumes {

                pv0 {
                        id = "3CHhp6-yMvu-Fnqj-8usZ-EHp8-k88B-Jm8MK3"
                        device = "/dev/sda3"    # Hint only

                        status = ["ALLOCATABLE"]
                        flags = []
                        dev_size = 144695296    # 68.9961 Gigabytes
                        pe_start = 2048
                        pe_count = 17663        # 68.9961 Gigabytes
                }

                pv1 {
                        id = "CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q"
                        device = "/dev/sdb"     # Hint only

                        status = ["ALLOCATABLE"]
                        flags = []
                        dev_size = 41943040     # 20 Gigabytes
                        pe_start = 2048
                        pe_count = 5119 # 19.9961 Gigabytes
                }
        }

        logical_volumes {

                ubuntu-lv {
                        id = "slgzg5-CwNC-0sVo-4qFo-fnVj-A5Eu-4mVLE1"
                        status = ["READ", "WRITE", "VISIBLE"]
                        flags = []
                        creation_time = 1631117746      # 2021-09-08 18:15:46 +0200
                        creation_host = "ubuntu-server"
                        segment_count = 1

                        segment1 {
                                start_extent = 0
                                extent_count = 17663    # 68.9961 Gigabytes

                                type = "striped"
                                stripe_count = 1        # linear

                                stripes = [
                                        "pv0", 0
                                ]
                        }
                }
        }

}

EDIT1 : I added a new virtual disk to move the data from /dev/sdb but it did not work :

$ lsscsi -ss
[2:0:0:0]    cd/dvd  NECVMWar VMware SATA CD00 1.00  /dev/sr0        -
[32:0:0:0]   disk    VMware   Virtual disk     2.0   /dev/sda   80.0GiB
[32:0:1:0]   disk    VMware   Virtual disk     2.0   /dev/sdb   20.0GiB
$ ll /dev/sdc
ls: cannot access '/dev/sdc': No such file or directory
$ echo "- - -" | sudo tee /sys/class/scsi_host/host*/scan
- - -
$ lsscsi -ss
[2:0:0:0]    cd/dvd  NECVMWar VMware SATA CD00 1.00  /dev/sr0        -
[32:0:0:0]   disk    VMware   Virtual disk     2.0   /dev/sda   80.0GiB
[32:0:1:0]   disk    VMware   Virtual disk     2.0   /dev/sdb   20.0GiB
[32:0:2:0]   disk    VMware   Virtual disk     2.0   /dev/sdc   20.0GiB
$ ll /dev/sdc
brw-rw---- 1 root disk 8, 32 Sep 13 10:41 /dev/sdc
$ sudo parted /dev/sdc
GNU Parted 3.3
Using /dev/sdc
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) p
Error: /dev/sdc: unrecognised disk label
Model: VMware Virtual disk (scsi)
Disk /dev/sdc: 21.5GB
Sector size (logical/physical): 512B/512B
Partition Table: unknown
Disk Flags:
(parted) mklabel gpt
(parted)
$ sudo gdisk /dev/sdc
GPT fdisk (gdisk) version 1.0.5

Partition table scan:
  MBR: protective
  BSD: not present
  APM: not present
  GPT: present

Found valid GPT with protective MBR; using GPT.

Command (? for help): p
Disk /dev/sdc: 41943040 sectors, 20.0 GiB
Model: Virtual disk
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): F07182AE-3C90-419E-91ED-E1BF652C46A7
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 41942973 sectors (20.0 GiB)

Number  Start (sector)    End (sector)  Size       Code  Name

Command (? for help): n
Partition number (1-128, default 1):
First sector (34-41943006, default = 2048) or {+-}size{KMGTP}:
Last sector (2048-41943006, default = 41943006) or {+-}size{KMGTP}:
Current type is 8300 (Linux filesystem)
Hex code or GUID (L to show codes, Enter = 8300): 8e00
Changed type of partition to 'Linux LVM'

Command (? for help): p
Disk /dev/sdc: 41943040 sectors, 20.0 GiB
Model: Virtual disk
Sector size (logical/physical): 512/512 bytes
Disk identifier (GUID): F07182AE-3C90-419E-91ED-E1BF652C46A7
Partition table holds up to 128 entries
Main partition table begins at sector 2 and ends at sector 33
First usable sector is 34, last usable sector is 41943006
Partitions will be aligned on 2048-sector boundaries
Total free space is 2014 sectors (1007.0 KiB)

Number  Start (sector)    End (sector)  Size       Code  Name
   1            2048        41943006   20.0 GiB    8E00  Linux LVM

Command (? for help): w

Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
PARTITIONS!!

Do you want to proceed? (Y/N): y
OK; writing new GUID partition table (GPT) to /dev/sdc.
The operation has completed successfully.
$ sudo pvcreate /dev/sdc1
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  Physical volume "/dev/sdc1" successfully created.
$ sudo vgextend /dev/ubuntu-vg /dev/sdc1
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  Volume group "ubuntu-vg" successfully extended
$ sudo pvs -o+pv_used,uuid
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  PV         VG        Fmt  Attr PSize   PFree   Used    PV UUID
  /dev/sda3  ubuntu-vg lvm2 a--  <69.00g      0  <69.00g 3CHhp6-yMvu-Fnqj-8usZ-EHp8-k88B-Jm8MK3
  /dev/sdc1  ubuntu-vg lvm2 a--  <20.00g <20.00g      0  CLOgz3-eXyz-nUWm-e1db-oqoR-vldX-hcK4d1
  [unknown]  ubuntu-vg lvm2 a-m  <20.00g      0  <20.00g CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q
$ sudo pvmove /dev/sdb
  Failed to find device for physical volume "/dev/sdb".
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  WARNING: VG ubuntu-vg is missing PV CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q (last written to [unknown]).
  WARNING: Couldn't find all devices for LV ubuntu-vg/ubuntu-lv while checking used and assumed devices.
  Cannot change VG ubuntu-vg while PVs are missing.
  See vgreduce --removemissing and vgextend --restoremissing.
  Cannot process volume group ubuntu-vg
  Run `pvmove --help' for more information.

EDIT2 : Trying a vcfgrestore from /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg :

$ sudo ll /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg
-rw------- 1 root root 1593 Aug  2 12:33 /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg
$ sudo vgcfgrestore --test -f /etc/lvm/archive/ubuntu-vg_00007-1330575295.vg /dev/ubuntu-vg
  TEST MODE: Metadata will NOT be updated and volumes will not be (de)activated.
  Volume group ubuntu-vg has active volume: ubuntu-lv.
  WARNING: Found 1 active volume(s) in volume group "ubuntu-vg".
  Restoring VG with active LVs, may cause mismatch with its metadata.
Do you really want to proceed with restore of volume group "ubuntu-vg", while 1 volume(s) are active? [y/n]: y
  WARNING: Couldn't find device with uuid CdlY5k-IynC-hYTX-hH3h-HaLC-KAqy-n4h38q.
  Cannot restore Volume Group ubuntu-vg with 1 PVs marked as missing.
  Restore failed.

How can I fix lvm PV name "[unknown]" without forcing the removal of second PV from VG ?

I picked up a Logitech c920 USB camera, which is apparently meant to be plug and play on Ubuntu. It's registering on my USB devices when I run $ lsusb, but doesn't show up on Cheese or any other application. Oddly though, the microphone on the camera is picked up (for instance on google meetings, firefox displays it as an option for microphone).

I'm running Ubuntu 18.04.4.

$ lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 04f2:b5c0 Chicony Electronics Co., Ltd 
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 027: ID 046d:082d Logitech, Inc. HD Pro Webcam C920

...

$ lsusb -v
Bus 001 Device 026: ID 046d:082d Logitech, Inc. HD Pro Webcam C920
Couldn't open device, some information will be missing

and then follows tons of lines of details

I want to default a given user to a specific folder when they SFTP to my Ubuntu 18.04 machine. I also wanted to lock down SFTP a bit. This Digital Ocean post gave me what I needed, and helped me get a start, but it's not working as I hoped it would.

I created a folder called /var/sftp/my_username. Then I updated sshd_config to include these settings:

Match User my_username
ForceCommand internal-sftp
PasswordAuthentication yes
ChrootDirectory /var/sftp/
PermitTunnel no
AllowAgentForwarding no
AllowTcpForwarding no
X11Forwarding no

My hope was that my_username would land in /var/sftp/my_username and be trapped there. Instead, the user lands in /var/sftp and must open 'my_username' in order to move to a directory that they can upload to. This is a problem because /var/sftp will eventually list other sftp subfolders for other users (i.e. /var/sftp/your_username).

What can I do to default this user to /var/sftp/my_username? I have already tried changing the user's home directory to this location without luck.

After bringing up a dhcp controlled instance in AWS I have made changes to the /etc/network/interfaces file for custom nameserver and DNS search strings:

auto lo
auto eth0
iface lo inet loopback
dns-nameservers 1.1.1.1 9.9.9.9
dns-search flapjacks.io flapjacks.net

iface eth0 inet dhcp

I was hoping to be able to restart a service to get resolv.conf to reflect these changes, but I do not know the service to restart... the changes do show up after reboot however. Does anyone know what service should update this?

When I turn on my laptop, everything seems to boot normally and I enter my decryption key to decrypt my hard drive. Then I'm taken to my login page, but when I try to type in my password, none of my keys work and I can't move my mouse. Why is this happening?

Earlier I had a problem where I would get a black screen of death whenever I turned on my laptop and I resolved this by going into recovery mode and reinstalling Nvidia drivers. Now I have the problem mentioned above and whenever I go into the root terminal in recovery mode, I find that I'm not able to install any packages. I can't even do a simple sudo apt-get update.

What is happening?

I have QEMU installed but as I don't really use it and it's recently had lots of security vulnerabilities discovered in it so I would like to fully remove it. I installed it with sudo apt-get install qemu as far as I know. When I run sudo apt-get purge qemu it only says that it removes qemu but when it had its most recent update I saw that it had many dependencies and other packages called qemu something which it didn't remove along with the qemu package.

So how can I fully remove it so that all of its config files and packages installed by it are removed? Obviously if dependencies are used by other programs that it uses then I don't want to remove them too, but only things it installed and that are not needed by other programs. I tried running sudo apt-get autoremove which is the equivalent to what the answers here say so that didn't help (it didn't remove anything).

I am running Ubuntu GNOME 15.10 with GNOME 3.18.

Information Update:

I upgraded my machine to Ubuntu GNOME 16.04 with GNOME 3.20, I don't remember whether I reinstalled qemu before or after the upgrade, but I did along with qemu-kvm and the virt-manager package. But now even after purging all three of them and seemingly removing all of the dependencies they installed, I still have a problem. It doesn't seem to have actually removed all the changes they made to my system.

For instance this was the output from systemctl status qemu-kvm.service:

● qemu-kvm.service - LSB: QEMU KVM module loading script
   Loaded: loaded (/etc/init.d/qemu-kvm; bad; vendor preset: enabled)
   Active: failed (Result: exit-code) since Sun 2016-08-14 13:19:28 BST; 33min ago
     Docs: man:systemd-sysv-generator(8)
  Process: 2099 ExecStart=/etc/init.d/qemu-kvm start (code=exited, status=5)

Aug 14 13:19:28 <Computer-Name> systemd[1]: Starting LSB: QEMU KVM module loading script...
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Control process exited, code=exited status=5
Aug 14 13:19:28 <Computer-Name> systemd[1]: Failed to start LSB: QEMU KVM module loading script.
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Unit entered failed state.
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Failed with result 'exit-code'.

And this was the output from journalctl | grep qemu:

Aug 14 13:19:23 <Computer-Name> ureadahead[866]: ureadahead:/lib/udev/rules.d/60-qemu-system-common.rules: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-alpha: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/lib/x86_64-linux-gnu/qemu/block-curl.so: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-arm: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/lib/x86_64-linux-gnu/qemu/block-iscsi.so: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/lib/x86_64-linux-gnu/qemu/block-dmg.so: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/lib/x86_64-linux-gnu/qemu/block-rbd.so: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-aarch64: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-cris: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-i386: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-lm32: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-m68k: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-microblaze: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-microblazeel: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-x86_64: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-ppc64: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-ppcemb: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-sh4: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-sh4eb: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-sparc: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-sparc64: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-unicore32: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-xtensaeb: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-mips: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-mips64el: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-mipsel: No such file or directory
Aug 14 13:19:24 >Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-or32: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-ppc: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-xtensa: No such file or directory
Aug 14 13:19:24 <Computer-Name> ureadahead[866]: ureadahead:/usr/bin/qemu-system-mips64: No such file or directory
Aug 14 13:19:25 <Computer-Name> systemd[1]: qemu-kvm.service: Control process exited, code=exited status=5
Aug 14 13:19:25 <Computer-Name> systemd[1]: qemu-kvm.service: Unit entered failed state.
Aug 14 13:19:25 <Computer-Name> systemd[1]: qemu-kvm.service: Failed with result 'exit-code'.
Aug 14 13:19:25 <Computer-Name> ureadahead[866]: ureadahead:/usr/share/qemu/init/qemu-kvm-init: No such file or directory
Aug 14 13:19:27 <Computer-Name> systemd[1]: qemu-kvm.service: Control process exited, code=exited status=5
Aug 14 13:19:27 <Computer-Name> systemd[1]: qemu-kvm.service: Unit entered failed state.
Aug 14 13:19:27 <Computer-Name> systemd[1]: qemu-kvm.service: Failed with result 'exit-code'.
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Control process exited, code=exited status=5
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Unit entered failed state.
Aug 14 13:19:28 <Computer-Name> systemd[1]: qemu-kvm.service: Failed with result 'exit-code'.
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-arm: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-armeb: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-cris: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-m68k: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-mips: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-mips64: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-mipsel: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-mips64el: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-ppc: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-ppc64: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-ppc64abi32: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-ppc64le: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-s390x: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-sh4: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-sh4eb: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-sparc: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-microblaze: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-sparc32plus: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-aarch64: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-alpha: No such file or directory
Aug 14 13:19:31 <Computer-Name> ureadahead[866]: ureadahead:/var/lib/binfmts/qemu-sparc64: No such file or directory
Aug 14 13:19:32 <Computer-Name> ureadahead[866]: ureadahead:/etc/libvirt/qemu/Ubuntu_GNOME_16-04_GNOME_3-18.xml: No such file or directory
Aug 14 13:19:32 <Computer-Name> ureadahead[866]: ureadahead:/etc/libvirt/qemu/Ubuntu_GNOME_16-10_GNOME_3-21.xml: No such file or directory
Aug 14 13:19:32 <Computer-Name> ureadahead[866]: ureadahead:/etc/libvirt/qemu/Ubuntu_Unity_16-04.xml: No such file or directory
Aug 14 13:19:32 <Computer-Name> ureadahead[866]: ureadahead:/etc/libvirt/qemu/Ubuntu_GNOME_16-04_GNOME_3-20.xml: No such file or directory
Aug 14 13:20:42 <Computer-Name> /usr/lib/gdm3/gdm-x-session[3320]: dbus-update-activation-environment: setting LIBVIRT_DEFAULT_URI=qemu:///system

So clearly QEMU isn't completely gone. But I want it to be so how do I completely remove it and all the changes it made?

When I run service --status-all | grep qemu this is the output:

 [ - ]  qemu-kvm

So it appears that it is there even though it may not be active as it does not seem to currently be running and I think that the - sign probably indicates its current status as many of the other services have + signs. So would it be safe then to just remove this service? And if so, how can this be done?

I've tried all the suggestions in this other question, but it just isn't working for me: Unable to upgrade pip

I'm running Ubuntu 12.04, and was able to install pip 1.0 using apt, but that version apparently has a bug which doesn't play nice with proxies, so I don't know how I can update it.

Here's what I'm getting in my console:

$ pip --version
pip 1.0 from /usr/lib/python2.7/dist-packages (python 2.7)
$ which pip
/usr/local/bin/pip

try #1

$ pip --proxy=$http_proxy install -U pip
Downloading/unpacking pip
  Cannot fetch index base URL http://pypi.python.org/simple/
  Could not find any downloads that satisfy the requirement pip
No distributions at all found for pip
Storing complete log in /home/falconer_k/.pip/pip.log

try #2

$ python ~/Downloads/get-pip.py --proxy=$http_proxy
/usr/lib/python2.7/dist-packages/setuptools/command/install_scripts.py:3:
UserWarning: Module pip was already imported from 
/tmp/tmpqbetIm/pip.zip/pip/__init__.py, but /usr/lib/python2.7/dist-packages
is being added to sys.path from pkg_resources import Distribution, PathMetadata, ensure_directory
Retrying (Retry(total=4, connect=None, read=None, redirect=None)) after 
connection broken by 'ProxyError('Cannot connect to proxy.', 
NewConnectionError('<pip._vendor.requests.packages.urllib3.connection.Verified
HTTPSConnection object at 0x392eed0>: Failed to establish a new connection: 
[Errno -2] Name or service not known',))': /simple/pip/

I can access the simple/pip folder directly using the browser:

https://pypi.python.org/simple/pip/

I also don't have the option to use a non-proxied connection.

Here's the contents of ~/.pip/pip.log:

------------------------------------------------------------
/usr/bin/pip run on Tue May  3 15:33:22 2016
Downloading/unpacking pip
  Getting page http://pypi.python.org/simple/pip
  Could not fetch URL http://pypi.python.org/simple/pip: timed out
  Will skip URL http://pypi.python.org/simple/pip when looking for download links for pip
  Getting page http://pypi.python.org/simple/
  Could not fetch URL http://pypi.python.org/simple/: <urlopen error [Errno 113] No route to host>
  Will skip URL http://pypi.python.org/simple/ when looking for download links for pip
  Cannot fetch index base URL http://pypi.python.org/simple/
  URLs to search for versions for pip:
  * http://pypi.python.org/simple/pip/
  Getting page http://pypi.python.org/simple/pip/
  Could not fetch URL http://pypi.python.org/simple/pip/: <urlopen error [Errno 113] No route to host>
  Will skip URL http://pypi.python.org/simple/pip/ when looking for download links for pip
  Could not find any downloads that satisfy the requirement pip
No distributions at all found for pip
Exception information:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/pip/basecommand.py", line 126, in main
    self.run(options, args)
  File "/usr/lib/python2.7/dist-packages/pip/commands/install.py", line 223, in run
    requirement_set.prepare_files(finder, force_root_egg_info=self.bundle, bundle=self.bundle)
  File "/usr/lib/python2.7/dist-packages/pip/req.py", line 948, in prepare_files
    url = finder.find_requirement(req_to_install, upgrade=self.upgrade)
  File "/usr/lib/python2.7/dist-packages/pip/index.py", line 152, in find_requirement
    raise DistributionNotFound('No distributions at all found for %s' % req)
DistributionNotFound: No distributions at all found for pip

I have a shared drive on my windows 8 pc, let's say the address is \\\Blabla\Bla.

The permissions are set so that everyone on my network can edit and read, I am able to access this folder via my mobile phone in ES File Explorer, and also from another Windows machine. But whenever I try to access it via the file manager in lubuntu it keeps asking for credentials. I have tried entering everything but without success. Also I have tried to access the shared drive via my IPv4 which I looked up in Windows via ipconfig but the result is the same. I have googled this but have found no solution.

I have installed all the packets listed in posts but the weird thing is Samba will not even open up for me. When I click on it, it gives me the window to enter my password and it accepts it but nothing happens after that.

Edit: I have tried entering my linux username and password combo first, then my windows username and password combo. After that, I created a new user on lubuntu with the exact same credentials as my windows account but still no luck. The packets I have installed are: * samba * system-config-samba * gvfs-bin * gvfs-backends

Also there is no login required to access this share.

Edit2: I have used the guide provided here.

h@h:~$ lspci -nn | grep VGA
01:05.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RS482/RS485 [Radeon Xpress 1100/1150] [1002:5974]

Thats my Graphics card. And all I need is a stable driver for this. Im running ubuntu 14.04, I tried installing fglrx but it didn't work I could not log in to ubuntu anymore.

I need to run 2 displays that are both 24", side by side so I can get larger workspace and run windows on vmware on other screen and main os, ubuntu on other. I hate windows but i need it too much to throw it away.

I just need someone to tell me how to install good graphics card. It can be fglrx but how do I avoid the login bug in that?

h@h:~$ dpkg -l | grep xserver-xorg-core

ii xserver-xorg-core-lts-utopic 2:1.16.0-1ubuntu1.2~trusty2 amd64 Xorg X server - core server

I have Ubuntu 14.04 and the program OneDrive-d confirmed as installed on my hard drive.

How can I remove OneDrive-d from Ubuntu 14.04, and how can I stop it from running automatically after reboot?

The last entries/queries I can find about PS3 dual shock controller are dealing with older kernel versions. It looks like there may still be a problem with using the PS3 dual shock via USB(or bluetooth) with 14.04? I'm only guessing because I get no sign of detection or input when I plug in the USB. When I run

dmesg | grep sony

[ 4687.762302] sony 0003:054C:0268.0003: can't set operational mode
[ 4687.770639] sony: probe of 0003:054C:0268.0003 failed with error -38

So at this point, I don't know if it's worth running : sudo apt-get install xboxdrv

I also found this article LINK but it's dated 01/2013.

I was considering installing steam, and checking out some of the games. There are a few in particular I want to check out, but I'm afraid of purchasing them and then my controller does not work. I don't have a ps3, I just have the controller for Sixaxis/emulator/Android set up...

I see mentions for QTsixa and xboxdrv and known bugs, but the posts are at least a year old(older distibution/kernels) So I'm wondering if the current Kernel has fixed the bug. Ideally, I'd like to just plug in USB, and play. No Bluetooth available right now..

I am using Eclipse, and just lost some important .java files from Ubuntu 14.04. Now I am left out with just .class files. I know about Java Decompiler, but jd-eclipse is not working. I need a Java decompiler for recovering my files or is there any other way to recover deleted files (not like extundelete) to recover my .java files?

If not, is there any easy way to use Java Decompiler?

I have rbenv installed, but every time I close the terminal, I'm required to execute exec $SHELL for it to reload rbenv; otherwise, I get an error that says rbenv is not installed.

How can I fix this so I don't need to execute exec $SHELL?

This is also included in my .bashrc.

export PATH="$HOME/.rbenv/bin:$PATH"
eval "$(rbenv init -)"

I have an Cinnamon DE. After installing Google+ theme, i saw, that popup notification bar moved to the top right corner.

How to change position of it?

I have been using WinFF tool to convert panasonic default .MTS videos into mpeg videos. However, I am not happy with the quality of the mpeg video output. Could some one tell me if there are any other tool for Ubuntu or the options that should I use in WinFF for getting high quality mpeg output.