I suspect that this might be DPMS related. When I use xscreensaver with screen blanking but no DPMS, the problem doesn't seem to occur. When I use xscreensaver with DPMS and standby (setting suspend and off to high values so they don't get triggered), freezes occur when trying to use the computer again after the screen has been blank for some time.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1538741 Title: Xorg freeze Status in xorg package in Ubuntu: New Bug description: I've got Xorg freezes from time to time. Previously, I was able to reproduce it with sleep 1; xset s activate as described at https://wiki.ubuntu.com/X/Troubleshooting/Freeze . That's no longer possible. However, freezes happen from time to time when I try to use the computer after the screen has been deactivated. I suspect it's a kernel problem because changing the kernel makes a difference: - on some kernels it doesn't seem to occur at all (e.g. 4.0.3 from mainline-crack) or the frequency is just so low that I haven't seen it yet - on newer kernels (e.g. 4.5 rc* and later, including the 4.5 release), the system restores the screen but Xorg freezes up almost instantly afterwards - on some kernels, the system doesn't properly restore the screen, there's a pattern with stripes or a single color (e.g. 4.0.4 from mainline-crack) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: xorg 1:7.7+7ubuntu4 ProcVersionSignature: Ubuntu 4.2.0-25.30-generic 4.2.6 Uname: Linux 4.2.0-25-generic x86_64 .tmp.unity.support.test.0: ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 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 CurrentDesktop: XFCE Date: Wed Jan 27 21:37:53 2016 DistUpgraded: 2016-01-11 19:25:27,198 ERROR got error from PostInstallScript ./xorg_fix_proprietary.py (g-exec-error-quark: Failed to execute child process "./xorg_fix_proprietary.py" (No such file or directory) (8)) DistroCodename: wily DistroVariant: ubuntu ExtraDebuggingInterest: Yes, including running git bisection searches GpuHangFrequency: Several times a week GpuHangReproducibility: Yes, I can easily reproduce it GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV515/M54 [Mobility Radeon X1400] [1002:7145] (prog-if 00 [VGA controller]) Subsystem: Lenovo Thinkpad T60 model 2007 [17aa:2006] MachineType: LENOVO 2007QPG PccardctlIdent: Socket 0: no product info available PccardctlStatus: Socket 0: no card ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-25-generic root=UUID=2a7cf7e8-4927-4e73-a6d3-e783efe97779 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to wily on 2016-01-11 (16 days ago) dmi.bios.date: 09/12/2008 dmi.bios.vendor: LENOVO dmi.bios.version: 79ETE3WW (2.23 ) dmi.board.name: 2007QPG dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr79ETE3WW(2.23):bd09/12/2008:svnLENOVO:pn2007QPG:pvrThinkPadT60:rvnLENOVO:rn2007QPG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2007QPG dmi.product.version: ThinkPad T60 dmi.sys.vendor: LENOVO version.compiz: compiz 1:0.9.12.2+15.10.20151015-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.64-1 version.libgl1-mesa-dri: libgl1-mesa-dri 11.0.2-1ubuntu4 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.0.2-1ubuntu4 version.xserver-xorg-core: xserver-xorg-core 2:1.17.2-1ubuntu9.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.9.2-1ubuntu1 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.5.0+git20150819-0ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20150808-0ubuntu4 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.11-1ubuntu3 xserver.bootTime: Wed Jan 27 21:17:51 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.17.2-1ubuntu9.1 xserver.video_driver: radeon To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1538741/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp