Public bug reported: I have an ubuntu 16.04 PC which was recently upgraded from 10.something to 12.04 and then to 16.04 (I think that is how it went, it was a two day thing with me checking on it now and again to say yes. Now that it is running on 16.04 I have noticed that when I left the PC for a while it locked up. The display was off, the power light on the tower solidly on and the keyboard unresponsive. The Num Lock light was lit but would not respond to key presses, nor would the Caps Lock or Scroll Lock lights. No key presses or short press of a power light would change the system state. The only thing I could do while sat at the PC was hold the power button in to force a power off.
When the PC was powered back on everything seemed to be OK. I thought it might be a problem with suspending the PC. I was able to do that manually though. The display went off, the tower fans went quiet and the power light started to blink. Pressing keyboard keys did nothing but a short press of the power button brought the system back online. The only problem being that the Wi-Fi was lost until I restarted the system, not ideal but better than frozen. I attempted to disable the automatic suspend option from the Settings menu but the system still ended up in the frozen state. Next to completely disable suspend by creating a /etc/polkit-1/localauthority/50-local.d/com.ubuntu.disable-suspend.pkla file as suggested at http://askubuntu.com/questions/452908/how-to- disable-suspend-in-14-04 but the system still ended up frozen. That leaves me to think it was the act of going into the Monitor Disabled state which caused the issue. So I started to report an ubuntu-bug and here I am typing out this description of what I remember doing. $ lsb_release -rd Description: Ubuntu 16.04.1 LTS Release: 16.04 Memory 2.0 GiB Processor Intel Core 2 Duo CPU E4400 @ 2.00 GHz x 2 Graphics Gallium 0.4 on ATI RV515 OS type 64-bit Disk 96.6 GB If there are any further diagnostic steps I can take please let me know. This is a personal machine so I can do most things to it. I am a c/c++ software engineer by trade so although I am not great with the GNU Debugger I can do most things with a bit of instruction. I do not do much Ubuntu or Kernel work so links to getting started guides for how to do anything more specific that git clone or make would be appreciated. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: xorg 1:7.7+13ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-47.68-generic 4.4.24 Uname: Linux 4.4.0-47-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Thu Nov 17 13:29:59 2016 DistUpgraded: 2016-11-16 07:49:36,758 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: xenial DistroVariant: ubuntu ExtraDebuggingInterest: Yes GpuHangFrequency: Several times a day GpuHangReproducibility: Occurs more often under certain circumstances GpuHangStarted: Immediately after installing this version of Ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] RV516 [Radeon X1300/X1550 Series] [1002:7183] (prog-if 00 [VGA controller]) Subsystem: Dell RV516 [Radeon X1300/X1550 Series] [1028:0d02] Subsystem: Dell RV516 [Radeon X1300/X1550 Series] (Secondary) [1028:0d03] InstallationDate: Installed on 2014-02-03 (1017 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) LightdmGreeterLogOld: (lightdm-gtk-greeter:1176): GLib-CRITICAL **: g_shell_parse_argv: assertion 'command_line != NULL' failed ** (lightdm-gtk-greeter:1176): WARNING **: Failed to open sessions directory: Error opening directory '/usr/share/lightdm/sessions': No such file or directory ** (lightdm-gtk-greeter:1176): WARNING **: Failed to load user image: Failed to open file '/home/thomas/.face': No such file or directory ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-47-generic root=UUID=ce39165f-49f5-4875-a74e-2be810fd63c9 ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display Title: Xorg freeze UpgradeStatus: Upgraded to xenial on 2016-11-16 (1 days ago) dmi.bios.date: 06/23/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.0.15 dmi.board.name: 0CU409 dmi.board.vendor: Dell Inc. dmi.chassis.type: 3 dmi.chassis.vendor: Dell Inc. dmi.chassis.version: OEM dmi.modalias: dmi:bvnDellInc.:bvr1.0.15:bd06/23/2008:svnDellInc.:pnVostro200:pvr:rvnDellInc.:rn0CU409:rvr:cvnDellInc.:ct3:cvrOEM: dmi.product.name: Vostro 200 dmi.sys.vendor: Dell Inc. version.compiz: compiz 1:0.9.12.2+16.04.20160823-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.67-1ubuntu0.16.04.2 version.libgl1-mesa-dri: libgl1-mesa-dri 11.2.0-1ubuntu2.2 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 11.2.0-1ubuntu2.2 version.xserver-xorg-core: xserver-xorg-core 2:1.18.4-0ubuntu0.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.1-1ubuntu2 version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.7.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20160325-1ubuntu1.1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.12-1build2 xserver.bootTime: Thu Nov 17 12:54:25 2016 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.18.4-0ubuntu0.1 xserver.video_driver: radeon ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug compiz-0.9 freeze ubuntu xenial ** Summary changed: - PC freeze when turning of screen + PC freeze when turning off screen -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1642600 Title: PC freeze when turning off screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1642600/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
