And again this happens less than 24hrs later still with kernel 3.13.0-46-generic #76-Ubuntu SMP Thu Feb 26 18:52:13 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux. I was able to drop to a terminal with CTRL- ALT-F1 this time as it locked up in Firefox.
Mar 2 07:35:38 localhost kernel: [71138.820009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle Portion of kern.log when lockup happened: Mar 2 07:35:38 localhost kernel: [71138.820009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle Mar 2 07:36:23 localhost kernel: [71184.699897] [drm:intel_crtc_cursor_set], cursor off Mar 2 07:36:24 localhost kernel: [71185.780637] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x y) (0 0) Mar 2 07:36:24 localhost kernel: [71185.780641] [drm:intel_set_config_compute_mode_changes], computed changes for [CRTC:3], mode_changed=0, fb_changed=1 Mar 2 07:36:24 localhost kernel: [71185.780644] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:VGA-1] to [CRTC:3] Mar 2 07:36:24 localhost kernel: [71185.780656] [drm:i9xx_update_plane], Writing base 00046000 00000000 0 0 6720 Mar 2 07:36:24 localhost kernel: [71185.788019] [drm:intel_crtc_set_config], [CRTC:4] [NOFB] Mar 2 07:36:24 localhost kernel: [71185.788021] [drm:intel_set_config_compute_mode_changes], computed changes for [CRTC:4], mode_changed=0, fb_changed=0 Mar 2 07:36:24 localhost kernel: [71185.788023] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:VGA-1] to [CRTC:3] Mar 2 07:36:24 localhost kernel: [71185.788026] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x y) (0 0) Mar 2 07:36:24 localhost kernel: [71185.788029] [drm:intel_set_config_compute_mode_changes], computed changes for [CRTC:3], mode_changed=0, fb_changed=0 Mar 2 07:36:24 localhost kernel: [71185.788031] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:VGA-1] to [CRTC:3] Mar 2 07:36:24 localhost kernel: [71185.788042] [drm:intel_crtc_set_config], [CRTC:3] [FB:37] #connectors=1 (x y) (0 0) Mar 2 07:36:24 localhost kernel: [71185.788044] [drm:intel_set_config_compute_mode_changes], computed changes for [CRTC:3], mode_changed=0, fb_changed=0 Mar 2 07:36:24 localhost kernel: [71185.788046] [drm:intel_modeset_stage_output_state], [CONNECTOR:5:VGA-1] to [CRTC:3] -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1402331 Title: System will periodically lockup with [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle Status in linux package in Ubuntu: Incomplete Bug description: I have noticed the lockups periodically since 09/13/2014. I can't remember what kernel version was in use then possibly kernel 3.13.0-35-generic or -36. It has continued periodically through versions -39; -40 and now to -43. The last time this has happened was today Dec 13 14:40:57 localhost kernel: [154858.820009] [drm:i915_hangcheck_elapsed] *ERROR* Hangcheck timer elapsed... render ring idle. At times when it locks up I will have a cursor on a black screen and will have to press the power button to restart other times it will lockup whenever I'm in an application such as Firefox or Evolution. At that time I can usually CTRL>ALT-F1 log in and run 'sudo reboot' to restart the system. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-43-generic 3.13.0-43.72 ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11 Uname: Linux 3.13.0-43-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 2445 F.... pulseaudio CurrentDesktop: GNOME Date: Sat Dec 13 20:22:51 2014 HibernationDevice: RESUME=UUID=bb329dc0-0642-4b6a-876a-12c2f02fb7f6 InstallationDate: Installed on 2014-10-24 (50 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) IwConfig: eth0 no wireless extensions. lo no wireless extensions. MachineType: Dell Inc. OptiPlex 780 ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-43-generic root=UUID=4254a7e9-429b-4f53-a08c-ae7ff839b98f ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-43-generic N/A linux-backports-modules-3.13.0-43-generic N/A linux-firmware 1.127.10 RfKill: SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 02/13/2010 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 0C27VV dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.asset.tag: LE0006476 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA03:bd02/13/2010:svnDellInc.:pnOptiPlex780:pvr:rvnDellInc.:rn0C27VV:rvrA01:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 780 dmi.sys.vendor: Dell Inc. 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