Public bug reported:
I have a Qt application which hangs in startup. Stack trace:
(gdb) bt
#0 0xb77b5424 in __kernel_vsyscall ()
#1 0xb3d2084b in pthread_cond_wait@@GLIBC_2.3.2 () from
/lib/i386-linux-gnu/libpthread.so.0
#2 0xb2a1337b in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#3 0xb2a14b40 in ?? () from /usr/lib/i386-linux-gnu/libxcb.so.1
#4 0xb2a14e07 in xcb_wait_for_reply () from /usr/lib/i386-linux-gnu/libxcb.so.1
#5 0xb2a3bd0b in xcb_glx_query_version_reply () from
/usr/lib/i386-linux-gnu/libxcb-glx.so.0
#6 0xa08a5740 in ?? () from
/usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
#7 0xa08a8b9a in ?? () from
/usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
#8 0xa08aa2f9 in ?? () from
/usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
#9 0xa08bb1f9 in ?? () from
/usr/lib/i386-linux-gnu/qt5/plugins/platforms/libqxcb.so
#10 0xb41f57f9 in ?? () from /usr/lib/i386-linux-gnu/libQt5Gui.so.5
#11 0xb41fccf4 in QGuiApplicationPrivate::createPlatformIntegration() () from
/usr/lib/i386-linux-gnu/libQt5Gui.so.5
#12 0xb41fd704 in QGuiApplicationPrivate::createEventDispatcher() () from
/usr/lib/i386-linux-gnu/libQt5Gui.so.5
#13 0xb482bd4b in QApplicationPrivate::createEventDispatcher() () from
/usr/lib/i386-linux-gnu/libQt5Widgets.so.5
#14 0xb3f46972 in QCoreApplication::init() () from
/usr/lib/i386-linux-gnu/libQt5Core.so.5
#15 0xb3f469f9 in QCoreApplication::QCoreApplication(QCoreApplicationPrivate&)
() from /usr/lib/i386-linux-gnu/libQt5Core.so.5
#16 0xb41fe12a in QGuiApplication::QGuiApplication(QGuiApplicationPrivate&) ()
from /usr/lib/i386-linux-gnu/libQt5Gui.so.5
#17 0xb47d8de8 in QApplication::QApplication(int&, char**, int) () from
/usr/lib/i386-linux-gnu/libQt5Widgets.so.5
Google shows other reports about xcb_wait_for_reply deadlocking. This happens
when starting the application
from .xsession file using nodm display manager. Starting the app from an x
terminal works so i believe this is some kind of timing issue / race condition.
The app in question is properietary so i cannot supply it to reproduce the
issue, sorry.
Ubuntu version is Ubuntu 13.04 x86_32 with updates installed.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: libxcb1 1.8.1-2ubuntu2.1
ProcVersionSignature: Ubuntu 3.8.0-28.41-generic 3.8.13.5
Uname: Linux 3.8.0-28-generic i686
NonfreeKernelModules: nvidia
.proc.driver.nvidia.gpus.0: Error: [Errno 21] Is a directory:
'/proc/driver/nvidia/gpus/0'
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
NVRM version: NVIDIA UNIX x86 Kernel Module 304.88 Wed Mar 27 14:31:12 PDT
2013
GCC version: gcc version 4.7.3 (Ubuntu/Linaro 4.7.3-1ubuntu1)
.tmp.unity.support.test.0:
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CheckboxSubmission: 5411b7083f2413511daec522a712c016
CheckboxSystem: b845c366ea09c60efa3a45c1b5b21525
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,workarounds,scale,expo,ezoom]
CompositorRunning: None
Date: Mon Aug 12 14:09:50 2013
DistUpgraded: 2013-05-22 13:40:23,672 DEBUG enabling apt cron job
DistroCodename: raring
DistroVariant: ubuntu
EcryptfsInUse: Yes
GraphicsCard:
NVIDIA Corporation GT216M [NVS 5100M] [10de:0a2c] (rev a2) (prog-if 00 [VGA
controller])
Subsystem: Hewlett-Packard Company Device [103c:1521]
InstallationDate: Installed on 2011-06-14 (790 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
JockeyStatus:
kmod:nvidia_310_updates - NVIDIA binary Xorg driver, kernel module and VDPAU
library (Proprietary, Disabled, Not in use)
kmod:nvidia_313_updates - NVIDIA binary Xorg driver, kernel module and VDPAU
library (Proprietary, Disabled, Not in use)
kmod:nvidia_304 - nvidia_304 (Proprietary, Enabled, Not in use)
kmod:nvidia_304_updates - NVIDIA binary Xorg driver, kernel module and VDPAU
library (Proprietary, Disabled, Not in use)
kmod:nvidia_310 - NVIDIA binary Xorg driver, kernel module and VDPAU library
(Proprietary, Disabled, Not in use)
MachineType: Hewlett-Packard HP EliteBook 8540p
MarkForUpload: True
PccardctlStatus:
Socket 0:
3.3V
16-bit
PC Card
Subdevice 0 (function 0) bound to driver "pata_pcmcia"
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-28-generic
root=UUID=debfbf8b-faee-4fef-887f-aaa61947d6d2 ro
crashkernel=384M-2G:64M,2G-:128M quiet splash
SourcePackage: libxcb
UpgradeStatus: Upgraded to raring on 2013-05-22 (82 days ago)
XorgConf:
Section "Device"
Identifier "Default Device"
Option "NoLogo" "True"
EndSection
dmi.bios.date: 03/09/2011
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68CVD Ver. F.0F
dmi.board.name: 1521
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 32.33
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr68CVDVer.F.0F:bd03/09/2011:svnHewlett-Packard:pnHPEliteBook8540p:pvr:rvnHewlett-Packard:rn1521:rvrKBCVersion32.33:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP EliteBook 8540p
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.9~daily13.06.19~13.04-0ubuntu1
version.libdrm2: libdrm2 2.4.43-0ubuntu1.1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.1.4-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.1.4-0ubuntu0.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.13.3-0ubuntu6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu2b2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.1.0-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.21.6-0ubuntu4.1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.7-0ubuntu1
xserver.bootTime: Mon Aug 12 10:00:08 2013
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:
open /dev/dri/card0: No such file or directory
open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
xserver.version: 2:1.13.3-0ubuntu6
** Affects: libxcb (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 raring ubuntu
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1211274
Title:
xcb_wait_for_reply deadlock
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libxcb/+bug/1211274/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
