Decorations disappeared silently

[Tommy_CZ]

Hi I was browsing in firefox and when I wanted to move the window, I realised all decorations from window were gone.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: compiz 1:0.9.7.8-0ubuntu1.2
ProcVersionSignature: Ubuntu 3.2.0-26.41-generic 3.2.19
Uname: Linux 3.2.0-26-generic x86_64
NonfreeKernelModules: wl
.tmp.unity.support.test.0:

ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
CompizPlugins: [core,composite,opengl,decor,compiztoolbox,regex,imgpng,place,loginout,widget,unitymtgrabhandles,animation,vpswitch,session,grid,mousepoll,dbus,resize,gnomecompat,move,animationaddon,wall,workarounds,wobbly,fade,scale,addhelper,expo,ezoom,unityshell]
CompositorRunning: compiz
CurrentDmesg:
 Error: command ['sh', '-c', 'dmesg | comm -13 --nocheck-order /var/log/dmesg -'] failed with exit code 1: comm: /var/log/dmesg: Permission denied
 dmesg: write failed: Broken pipe
Date: Fri Jul 20 12:28:00 2012
DistUpgraded: Fresh install
DistroCodename: precise
DistroVariant: ubuntu
DkmsStatus:
 applesmc, 0.18.1, 3.2.0-26-generic, x86_64: installed
 broadcom-sta, 5.100.82.112, 3.2.0-25-generic, x86_64: installed
 broadcom-sta, 5.100.82.112, 3.2.0-26-generic, x86_64: installed
GraphicsCard:
 Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Apple Inc. Device [106b:00eb]
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64+mac (20120412)
MachineType: Apple Inc. MacBookAir4,2
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=cs_CZ.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.2.0-26-generic root=UUID=0d80827e-6a72-4f28-adbe-6fc585449902 ro rootflags=subvol=@ quiet splash i915.i915_enable_rc6=1 acpi=backlight_vendor vt.handoff=7
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/24/2012
dmi.bios.vendor: Apple Inc.
dmi.bios.version: MBA41.88Z.0077.B0F.1201241549
dmi.board.asset.tag: Base Board Asset Tag#
dmi.board.name: Mac-742912EFDBEE19B3
dmi.board.vendor: Apple Inc.
dmi.board.version: MacBookAir4,2
dmi.chassis.type: 10
dmi.chassis.vendor: Apple Inc.
dmi.chassis.version: Mac-742912EFDBEE19B3
dmi.modalias: dmi:bvnAppleInc.:bvrMBA41.88Z.0077.B0F.1201241549:bd01/24/2012:svnAppleInc.:pnMacBookAir4,2:pvr1.0:rvnAppleInc.:rnMac-742912EFDBEE19B3:rvrMacBookAir4,2:cvnAppleInc.:ct10:cvrMac-742912EFDBEE19B3:
dmi.product.name: MacBookAir4,2
dmi.product.version: 1.0
dmi.sys.vendor: Apple Inc.
version.compiz: compiz 1:0.9.7.8-0ubuntu1.2
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.2-0ubuntu3.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.2-0ubuntu3.1
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.6
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
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

[Daniel van Vugt (vanvugt)]

Could you please try getting a stack trace so we can know the offending region of code? To get a stack trace...

1. env DISPLAY=:0 gdb /usr/bin/gtk-window-decorator
2. (gdb) break _exit
3. (gdb) run --sync --replace
4. Trigger the crash.
5. (gdb) bt
6. Copy the output from gdb and paste it here.

[MC Return (mc-return)]

I can confirm this bug, and I can confirm that the situation got worse in Compiz 0.9.8, compared to 0.9.7.8.

Ctrl+Alt+Home runs the command emerald --replace here, so I can get my decorations back quickly when it happens, which also means it is not the fault of gtk-window-decorator, because it happens to emerald as well.

I will try to get a stack trace, but I do yet have to find out how to trigger the crash as it seems to happen quite randomly.

[Daniel van Vugt (vanvugt)]

mc-return, there are several different causes of this behaviour. Please follow the above instructions and log a new bug with your results (since they might be different to Tommy_CZ).

[Launchpad Janitor (janitor)]

[Expired for compiz (Ubuntu) because there has been no activity for 60 days.]