[Expired for xorg-server (Ubuntu) because there has been no activity for
60 days.]
** Changed in: xorg-server (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1998024
Title:
Xorg crashes on startup if Marco window manager is used
Status in nvidia-graphics-drivers-520 package in Ubuntu:
Expired
Status in xorg-server package in Ubuntu:
Expired
Bug description:
I'm running MATE desktop and I installed NVIDIA GTX 1060 GPU to my
system and Xorg crashes after entering password.
I proceeded to run strace with startx trying to debug this and it
seems that the window manager `marco` does some (yet unknown) command
which causes Xorg to crash with SIGABRT (signal 6) or SIGSEGV (signal
11) and emit stack trace:
0: /usr/lib/xorg/Xorg (OsLookupColor+0x13c)
1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x60)
2: ? (?+0x0)
(EE) Segmentation fault at address 0x0
(EE) Caught signal 11 (Segmentation fault). Server aborting
The Xorg itself declares signal 11 but `journalctl --since "5 min ago"` shows
kernel: potentially unexpected fatal signal 6.
kernel: CPU: 2 PID: 20660 Comm: Xorg Tainted: P OE
5.15.0-53-lowlatency #59~20.04.1-Ubuntu
kernel: Hardware name: System manufacturer System Product Name/P8H77-M PRO,
BIOS 1505 10/17/2014
followed with register dump.
Before crashing, process running `marco` also emits warning which I think is
not related to the problem (it may be caused by the fact that I executed marco
with startx instead of mate-session):
Window manager warning: Log level 128: Name
com.canonical.AppMenu.Registrar does not exist on the session bus
Workaround: downgrading to NVIDIA driver version 470 avoids the problem (as
suggested here:
https://ubuntu-mate.community/t/updated-nvidia-settings-now-x-wont-start/24991)
# sudo apt install linux-modules-nvidia-470-lowlatency-hwe-20.04
nvidia-driver-470 linux-modules-nvidia-520-lowlatency-hwe-20.04-
nvidia-driver-520-
I also tried version 515 and it caused the same crash.
I'm using following kernel package: linux-lowlatency-hwe-20.04 (+
linux-tools-lowlatency-hwe-20.04)
I would guess that the bug is in Xorg OsLookupColor() implementation which
gets triggered by recent NVIDIA driver change.
Bug https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1853266
might be related.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: nvidia-driver-520 (not installed)
ProcVersionSignature: Ubuntu 5.15.0-53.59~20.04.1-lowlatency 5.15.64
Uname: Linux 5.15.0-53-lowlatency x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.25
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
Date: Sat Nov 26 21:42:50 2022
EcryptfsInUse: Yes
InstallationDate: Installed on 2019-01-05 (1421 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180725)
SourcePackage: nvidia-graphics-drivers-520
UpgradeStatus: Upgraded to focal on 2022-09-13 (74 days ago)
modified.conffile..etc.init.d.apport: [modified]
mtime.conffile..etc.init.d.apport: 2022-05-19T12:50:20.029158
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