Ubuntu
gnome-control-center package

Stack Overflow - gnome-control-center

Bug #1972037 reported by Stan Tomlinson
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
gnome-control-center (Ubuntu)
New
Low
Unassigned

Bug Description

Program: gnome-control-center
Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download)
OS: ubuntu 20.04.4 LTS
GNOME Version: 3.36.8 (ubuntu default download)
Windowing System: X11
Graphics: GeForce 8400GS/PCIe/SSE2
Driver: Using NVIDIA binary driver version 340.108
Source: download version from ubuntu

Steps to reproduce:

Reset GNOME settings with:
  dconf reset -f /org/gnome/control-center/
Open GNOME Settings with:
  /usr/bin/gnome-control-center
Click on "Displays" and receive:
  Xlib: extension "RANDR" missing on display ":0".
  Xlib: extension "RANDR" missing on display ":0".
  Segmentation fault (core dumped)

Repeated using gdb with package symbols.
Output of "bt -full" in attachment (with a few comments).

(Submitted to gnome.org, but they said it is out of date and not supported by them.)

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-control-center 1:3.36.5-0ubuntu4
ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
Uname: Linux 5.4.0-100-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.20.11-0ubuntu27.23
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: GNOME-Flashback:GNOME
Date: Fri May 6 20:38:55 2022
InstallationDate: Installed on 2011-07-11 (3952 days ago)
InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 (20110426)
SourcePackage: gnome-control-center
UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago)

Revision history for this message
Stan Tomlinson (v-stan) wrote :
Revision history for this message
Sebastien Bacher (seb128) wrote :

Thank you for your bug report, the log has those warnings which is weird

Xlib: extension "RANDR" missing on display ":0".

could be somehow due to the nvidia drivers

Changed in gnome-control-center (Ubuntu):
status: New → Incomplete
importance: Undecided → Low
Revision history for this message
Sebastien Bacher (seb128) wrote :

could you provide some details on the screens configuration you are using?

Revision history for this message
Stan Tomlinson (v-stan) wrote : Re: [Bug 1972037] Re: Stack Overflow - gnome-control-center

Would be happy to.
What files would you most like to see?

On Mon, May 9, 2022 at 4:46 AM Sebastien Bacher <email address hidden>
wrote:

> could you provide some details on the screens configuration you are
> using?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1972037
>
> Title:
> Stack Overflow - gnome-control-center
>
> Status in gnome-control-center package in Ubuntu:
> Incomplete
>
> Bug description:
>
> Program: gnome-control-center
> Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download)
> OS: ubuntu 20.04.4 LTS
> GNOME Version: 3.36.8 (ubuntu default download)
> Windowing System: X11
> Graphics: GeForce 8400GS/PCIe/SSE2
> Driver: Using NVIDIA binary driver version 340.108
> Source: download version from ubuntu
>
> Steps to reproduce:
>
> Reset GNOME settings with:
> dconf reset -f /org/gnome/control-center/
> Open GNOME Settings with:
> /usr/bin/gnome-control-center
> Click on "Displays" and receive:
> Xlib: extension "RANDR" missing on display ":0".
> Xlib: extension "RANDR" missing on display ":0".
> Segmentation fault (core dumped)
>
> Repeated using gdb with package symbols.
> Output of "bt -full" in attachment (with a few comments).
>
> (Submitted to gnome.org, but they said it is out of date and not
> supported by them.)
>
> ProblemType: Bug
> DistroRelease: Ubuntu 20.04
> Package: gnome-control-center 1:3.36.5-0ubuntu4
> ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
> Uname: Linux 5.4.0-100-generic x86_64
> NonfreeKernelModules: nvidia
> ApportVersion: 2.20.11-0ubuntu27.23
> Architecture: amd64
> CasperMD5CheckResult: skip
> CurrentDesktop: GNOME-Flashback:GNOME
> Date: Fri May 6 20:38:55 2022
> InstallationDate: Installed on 2011-07-11 (3952 days ago)
> InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64
> (20110426)
> SourcePackage: gnome-control-center
> UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions
>
>

Revision history for this message
Sebastien Bacher (seb128) wrote :

just verbal description of the numbers of screens, layout, video cards/drivers

Revision history for this message
Stan Tomlinson (v-stan) wrote :

two HDMI screens side-by-side
2 old nvidia cards (both GeForce 8400GS)
nvidia driver 340.108 (latest version, required by cards)
Xinerama enabled
software kept fully up-to-date with stable release

Side comment -- gnome seems to crash a lot.
This is first situation where I can use gdb to get stack information.

On Mon, May 9, 2022 at 9:41 AM Sebastien Bacher <email address hidden>
wrote:

> just verbal description of the numbers of screens, layout, video
> cards/drivers
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1972037
>
> Title:
> Stack Overflow - gnome-control-center
>
> Status in gnome-control-center package in Ubuntu:
> Incomplete
>
> Bug description:
>
> Program: gnome-control-center
> Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download)
> OS: ubuntu 20.04.4 LTS
> GNOME Version: 3.36.8 (ubuntu default download)
> Windowing System: X11
> Graphics: GeForce 8400GS/PCIe/SSE2
> Driver: Using NVIDIA binary driver version 340.108
> Source: download version from ubuntu
>
> Steps to reproduce:
>
> Reset GNOME settings with:
> dconf reset -f /org/gnome/control-center/
> Open GNOME Settings with:
> /usr/bin/gnome-control-center
> Click on "Displays" and receive:
> Xlib: extension "RANDR" missing on display ":0".
> Xlib: extension "RANDR" missing on display ":0".
> Segmentation fault (core dumped)
>
> Repeated using gdb with package symbols.
> Output of "bt -full" in attachment (with a few comments).
>
> (Submitted to gnome.org, but they said it is out of date and not
> supported by them.)
>
> ProblemType: Bug
> DistroRelease: Ubuntu 20.04
> Package: gnome-control-center 1:3.36.5-0ubuntu4
> ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
> Uname: Linux 5.4.0-100-generic x86_64
> NonfreeKernelModules: nvidia
> ApportVersion: 2.20.11-0ubuntu27.23
> Architecture: amd64
> CasperMD5CheckResult: skip
> CurrentDesktop: GNOME-Flashback:GNOME
> Date: Fri May 6 20:38:55 2022
> InstallationDate: Installed on 2011-07-11 (3952 days ago)
> InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64
> (20110426)
> SourcePackage: gnome-control-center
> UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions
>
>

Sebastien Bacher (seb128)
Changed in gnome-control-center (Ubuntu):
status: Incomplete → New
Revision history for this message
Sebastien Bacher (seb128) wrote :

upstream report for reference was https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/1813

Unsure if xinerama is creating any issue there, could you add your /var/log/Xorg.0.log to the report?

Revision history for this message
Sebastien Bacher (seb128) wrote :

The Xorg log was sent via email and contains

(WW) NVIDIA: The Composite and Xinerama extensions are both enabled, which
(WW) NVIDIA: is an unsupported configuration. The driver will continue
(WW) NVIDIA: to load, but may behave strangely.
(WW) NVIDIA: Xinerama is enabled, so RandR has likely been disabled by the
(WW) NVIDIA: X server.

gnome-control-center should handle the situation better but that's a bit of a special graphical display configuration, did you try to do without xinerama?

Revision history for this message
Stan Tomlinson (v-stan) wrote :
  • Xorg.0.log Edit (30.4 KiB, text/x-log; charset="US-ASCII"; name="Xorg.0.log")

Turned off COMPOSITE, and am getting the same reaction.
See attached Xorg.0.log

On Tue, May 10, 2022 at 3:20 AM Sebastien Bacher <email address hidden>
wrote:

> The Xorg log was sent via email and contains
>
> (WW) NVIDIA: The Composite and Xinerama extensions are both enabled, which
> (WW) NVIDIA: is an unsupported configuration. The driver will continue
> (WW) NVIDIA: to load, but may behave strangely.
> (WW) NVIDIA: Xinerama is enabled, so RandR has likely been disabled by the
> (WW) NVIDIA: X server.
>
> gnome-control-center should handle the situation better but that's a bit
> of a special graphical display configuration, did you try to do without
> xinerama?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1972037
>
> Title:
> Stack Overflow - gnome-control-center
>
> Status in gnome-control-center package in Ubuntu:
> New
>
> Bug description:
>
> Program: gnome-control-center
> Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download)
> OS: ubuntu 20.04.4 LTS
> GNOME Version: 3.36.8 (ubuntu default download)
> Windowing System: X11
> Graphics: GeForce 8400GS/PCIe/SSE2
> Driver: Using NVIDIA binary driver version 340.108
> Source: download version from ubuntu
>
> Steps to reproduce:
>
> Reset GNOME settings with:
> dconf reset -f /org/gnome/control-center/
> Open GNOME Settings with:
> /usr/bin/gnome-control-center
> Click on "Displays" and receive:
> Xlib: extension "RANDR" missing on display ":0".
> Xlib: extension "RANDR" missing on display ":0".
> Segmentation fault (core dumped)
>
> Repeated using gdb with package symbols.
> Output of "bt -full" in attachment (with a few comments).
>
> (Submitted to gnome.org, but they said it is out of date and not
> supported by them.)
>
> ProblemType: Bug
> DistroRelease: Ubuntu 20.04
> Package: gnome-control-center 1:3.36.5-0ubuntu4
> ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
> Uname: Linux 5.4.0-100-generic x86_64
> NonfreeKernelModules: nvidia
> ApportVersion: 2.20.11-0ubuntu27.23
> Architecture: amd64
> CasperMD5CheckResult: skip
> CurrentDesktop: GNOME-Flashback:GNOME
> Date: Fri May 6 20:38:55 2022
> InstallationDate: Installed on 2011-07-11 (3952 days ago)
> InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64
> (20110426)
> SourcePackage: gnome-control-center
> UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions
>
>

Revision history for this message
Stan Tomlinson (v-stan) wrote :

Sebastian,

Just turned off Xinerama (for a few minutes).
For some reason, the system is unable to use both screens without Xinerama.
Played with this a lot when I upgraded to 20.04 from 16.04 (worked nicely
before upgrade).
FWIW, cursor is a big X on second screen, but no background and no moving
windows onto it.

Stan

On Tue, May 10, 2022 at 11:52 AM Stan Tomlinson <email address hidden> wrote:

> Turned off COMPOSITE, and am getting the same reaction.
> See attached Xorg.0.log
>
> On Tue, May 10, 2022 at 3:20 AM Sebastien Bacher <
> <email address hidden>> wrote:
>
>> The Xorg log was sent via email and contains
>>
>> (WW) NVIDIA: The Composite and Xinerama extensions are both enabled, which
>> (WW) NVIDIA: is an unsupported configuration. The driver will
>> continue
>> (WW) NVIDIA: to load, but may behave strangely.
>> (WW) NVIDIA: Xinerama is enabled, so RandR has likely been disabled by the
>> (WW) NVIDIA: X server.
>>
>> gnome-control-center should handle the situation better but that's a bit
>> of a special graphical display configuration, did you try to do without
>> xinerama?
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/1972037
>>
>> Title:
>> Stack Overflow - gnome-control-center
>>
>> Status in gnome-control-center package in Ubuntu:
>> New
>>
>> Bug description:
>>
>> Program: gnome-control-center
>> Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download)
>> OS: ubuntu 20.04.4 LTS
>> GNOME Version: 3.36.8 (ubuntu default download)
>> Windowing System: X11
>> Graphics: GeForce 8400GS/PCIe/SSE2
>> Driver: Using NVIDIA binary driver version 340.108
>> Source: download version from ubuntu
>>
>> Steps to reproduce:
>>
>> Reset GNOME settings with:
>> dconf reset -f /org/gnome/control-center/
>> Open GNOME Settings with:
>> /usr/bin/gnome-control-center
>> Click on "Displays" and receive:
>> Xlib: extension "RANDR" missing on display ":0".
>> Xlib: extension "RANDR" missing on display ":0".
>> Segmentation fault (core dumped)
>>
>> Repeated using gdb with package symbols.
>> Output of "bt -full" in attachment (with a few comments).
>>
>> (Submitted to gnome.org, but they said it is out of date and not
>> supported by them.)
>>
>> ProblemType: Bug
>> DistroRelease: Ubuntu 20.04
>> Package: gnome-control-center 1:3.36.5-0ubuntu4
>> ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166
>> Uname: Linux 5.4.0-100-generic x86_64
>> NonfreeKernelModules: nvidia
>> ApportVersion: 2.20.11-0ubuntu27.23
>> Architecture: amd64
>> CasperMD5CheckResult: skip
>> CurrentDesktop: GNOME-Flashback:GNOME
>> Date: Fri May 6 20:38:55 2022
>> InstallationDate: Installed on 2011-07-11 (3952 days ago)
>> InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64
>> (20110426)
>> SourcePackage: gnome-control-center
>> UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago)
>>
>> To manage notifications about this bug go to:
>>
>> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions
>>
>>

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