Bug 46281

Created attachment 57274 [details]
xorg log

Created attachment 57275 [details]
xorg.conf

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-16.25-generic 3.2.6
Uname: Linux 3.2.0-16-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
CurrentDmesg:
 Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Keine Berechtigung
 dmesg: write failed: Datenübergabe unterbrochen (broken pipe)
Date: Sun Feb 19 03:17:15 2012
DistUpgraded: Log time: 2012-02-12 12:51:46.485634
DistroCodename: precise
DistroVariant: ubuntu
EcryptfsInUse: Yes
MachineType: Gigabyte Technology Co., Ltd. P55-USB3
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=de_DE.UTF-8
 LANGUAGE=de:en
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-16-generic root=/dev/mapper/hostnamevg-hostnameroot ro ipv6.disable=1 ip=dhcp ISCSI_INITIATOR=iqn.1993-08.org.debian:01:95384da15332 ISCSI_TARGET_NAME=iqn.mstier.de:desktop64.img ISCSI_TARGET_IP=192.168.0.4 ISCSI_TARGET_PORT=3260
SourcePackage: xserver-xorg-input-evdev
UpgradeStatus: Upgraded to precise on 2012-02-12 (6 days ago)
dmi.bios.date: 02/11/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F4
dmi.board.name: P55-USB3
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd02/11/2010:svnGigabyteTechnologyCo.,Ltd.:pnP55-USB3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnP55-USB3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: P55-USB3
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
version.compiz: compiz 1:0.9.7.0~bzr2995-0ubuntu4
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.30-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0~rc2-0ubuntu5
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0~rc2-0ubuntu5
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu3
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.6.99.901+git20120126-0ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:0.0.16+git20111201+b5534a1-1build2

the attached xorg.conf has hwcursor set to false, but must be set to true in order to trigger the bug.

I'm sure there's a bug file for this already but I couldn't find it. Either way, it's a longer-standing issue that hasn't been tracked down yet. It's in the server though.

Is there anything I can do to help?

(In reply to comment #6)
> Is there anything I can do to help?

a reliable reproducer. unfortunately, it seems to be a race condition and I haven't managed to reliably trigger it yet.

It is *very* reliable here.

once it hangs, attach gdb and see what causes the loop. Is it stuck in a single function or does it actually still process events?

The culprit is "DISPLAY=:0.1 xrandr -r 24".

It always happens after switching the refresh rate of the second screen using xrandr.

Forwarded to nvidia.

It gets stuck somewhere within the nvidia driver.

This is a mass change of bugs. Bugs assigned to me that haven't been updated in the last 3 years are closed as WONTFIX, because, well, let's at least be honest about it.

Please do not re-open unless you have a really good reason to do so (e.g. you're fixing it yourself). If it hasn't been fixed in the last 3 years, it probably won't be fixed anytime soon either. Sorry.