black screen or frozen screen after a change in multihead configuration

[Chow Loong Jin]

When changing the multihead configuration, typically when plugging in or unplugging an external monitor with a non-mirrored configuration, the screen freezes and I have to kill compiz to get the screen to display properly again. Compiz itself is not frozen, because compiz hotkeys seem to work even while the screen is frozen.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: compiz 1:0.9.11+14.04.20140310-0ubuntu1
Uname: Linux 3.13.4-hyper1 x86_64
.tmp.unity.support.test.0:

ApportVersion: 2.13.3-0ubuntu1
Architecture: amd64
CompizPlugins: [core,composite,opengl,copytex,compiztoolbox,decor,vpswitch,extrawm,text,resize,ring,screenshot,place,commands,put,mousepoll,move,gnomecompat,annotate,blur,clone,widget,regex,imgpng,animation,obs,workarounds,neg,bicubic,resizeinfo,grid,expo,session,wall,showmouse,ezoom,unitymtgrabhandles,fade,scale,scalefilter,showdesktop,scaleaddon,unityshell]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
CurrentDesktop: Unity
Date: Sun Mar 16 18:49:34 2014
DistUpgraded: 2014-03-03 20:19:00,072 DEBUG enabling apt cron job
DistroCodename: trusty
DistroVariant: ubuntu
DkmsStatus:
 tp-smapi, 0.41, 3.13.0-16-generic, x86_64: installed
 tp-smapi, 0.41, 3.13.0-17-generic, x86_64: installed
 tp-smapi, 0.41, 3.13.4-hyper1, x86_64: installed
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21fa]
MachineType: LENOVO 2325F45
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.4-hyper1 root=UUID=274ad2d4-6566-4eb1-85d7-d22ef41b2170 ro "acpi_osi=!Windows 2012" i915.i915_enable_rc6=7 i915.lvds_downclock=1 i915.i915_enable_fbc=1 i915.semaphores=1 rootflags=data=writeback splash resume=/dev/mapper/cryptostuff-swap crashkernel=384M-:128M vt.handoff=7
SourcePackage: compiz
UpgradeStatus: Upgraded to trusty on 2014-03-03 (12 days ago)
dmi.bios.date: 04/30/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G2ET94WW (2.54 )
dmi.board.asset.tag: Not Available
dmi.board.name: 2325F45
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: RH0005026
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG2ET94WW(2.54):bd04/30/2013:svnLENOVO:pn2325F45:pvrThinkPadX230:rvnLENOVO:rn2325F45:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2325F45
dmi.product.version: ThinkPad X230
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.11+14.04.20140310-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.0-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.0-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.15.0-1ubuntu7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Sun Mar 16 01:59:49 2014
xserver.configfile: /etc/X11/xorg.conf
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 4204
 vendor AUO
xserver.version: 2:1.15.0-1ubuntu7

[Chris Halse Rogers (raof)]

Ok, so this turns out to be triggered by enabling texture compression in CCSM. When I turn that on I can reproduce horrible, horrible failure on display size change (With a HSW Iris Pro 5200).