Public bug reported:
I documented my problem here:
http://askubuntu.com/questions/795970/lubuntu-14-04-mouse-cursor-stucks-occasionally
tl;tr
Mouse cursor stucks on certain events (clicking on Back-button in
Chromium-brouser triggers it every time), and then in logs are following lines:
[drm] stuck on render ring
[drm] GPU crash dump saved to /sys/class/drm/card0/error
[drm] GPU hangs can indicate a bug anywhere in the entire gfx stack, including
userspace.
[drm] Please file a _new_ bug report on bugs.freedesktop.org against DRI ->
DRM/Intel
[drm] drm/i915 developers can then reassign to the right component if it's not
a kernel issue.
[drm] The gpu crash dump is required to analyze gpu hangs, so please always
attach it.
[drm:i915_set_reset_status] *ERROR* render ring hung inside bo (0x77d7000 ctx
0) at 0x77d94a4
[drm] GMBUS [i915 gmbus vga] timed out, falling back to bit banging on pin 2
[drm:i915_reset] *ERROR* Failed to reset chip.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: xorg 1:7.7+1ubuntu8.1
ProcVersionSignature: Ubuntu 3.13.0-93.140-generic 3.13.11-ckt39
Uname: Linux 3.13.0-93-generic i686
ApportVersion: 2.14.1-0ubuntu3.21
Architecture: i386
CompizPlugins: No value set for
`/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
CurrentDesktop: LXDE
Date: Tue Aug 23 18:05:06 2016
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation 82Q963/Q965 Integrated Graphics Controller [8086:2992] (rev
02) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:100c]
LightdmGreeterLog:
** (lightdm-gtk-greeter:4192): WARNING **: Failed to load user image: Failed
to open file '/home/margo/.face': No such file or directory
** (lightdm-gtk-greeter:4192): WARNING **: Failed to load user image: Failed
to open file '/home/wanradt/.face': No such file or directory
g_dbus_connection_real_closed: Remote peer vanished with error: Underlying
GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
LightdmGreeterLogOld: ** (lightdm-gtk-greeter:1276): WARNING **: Failed to load
user image: Failed to open file '/home/margo/.face': No such file or directory
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-93-generic
root=UUID=e0593e21-dee3-49bd-bb82-e32995ff34c7 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 07/01/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 2JKT45AUS
dmi.board.name: LENOVO
dmi.chassis.vendor: LENOVO
dmi.chassis.version: NONE
dmi.modalias:
dmi:bvnLENOVO:bvr2JKT45AUS:bd07/01/2008:svnLENOVO:pn8795D1G:pvrThinkCentreM55:rvnLENOVO:rnLENOVO:rvrNONE:cvnLENOVO:ct4:cvrNONE:
dmi.product.name: 8795D1G
dmi.product.version: ThinkCentre M55
dmi.sys.vendor: LENOVO
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.64-1~ubuntu14.04.1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.6
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.6
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.7
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Tue Aug 23 17:44:59 2016
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.version: 2:1.15.1-0ubuntu2.7
xserver.video_driver: intel
** Affects: xorg (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 trusty ubuntu
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https://bugs.launchpad.net/bugs/1616113
Title:
Occasionally mouse cursor get stucked, internally i915 driver seems to
be culprit
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