Bug 105260

Summary:	Nouveau frequently crashes when hovering over taskbar in KDE Plasma 5
Product:	Mesa	Reporter:	Nathan Ridge <zeratul976>
Component:	Drivers/DRI/nouveau	Assignee:	Nouveau Project <nouveau>
Status:	RESOLVED MOVED	QA Contact:	Nouveau Project <nouveau>
Severity:	normal
Priority:	medium
Version:	13.0
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Nathan Ridge 2018-02-26 20:24:59 UTC

I am experiencing a frequent freeze of my entire graphics session, from which I can only recover by restarting by display manager.

The freeze always occurs when hovering over a taskbar entry and a thumbnail image of the corresponding window is shown, although I can't reliably reproduce the freeze every time I perform such a hover.

The following output appears in dmesg whenever this happens:

[425014.691684] nouveau 0000:01:00.0: gr: TRAP ch 2 [003fc60000 Xorg[16428]]
[425014.691694] nouveau 0000:01:00.0: gr: GPC0/TPC0/TEX: 80000049
[425014.691697] nouveau 0000:01:00.0: gr: GPC0/TPC1/TEX: 80000049
[425014.691715] nouveau 0000:01:00.0: fifo: read fault at 0002b70000 engine 00 [PGRAPH] client 01 [GPC0/TEX] reason 02 [PAGE_NOT_PRESENT] on channel 2 [003fc60000 Xorg[16428]]
[425014.691716] nouveau 0000:01:00.0: fifo: gr engine fault on channel 2, recovering...
[425014.691911] nouveau 0000:01:00.0: Xorg[16428]: channel 2 killed!
[425014.692071] nouveau 0000:01:00.0: gr: TRAP ch 9 [003f93c000 plasmashell[16602]]
[425014.692080] nouveau 0000:01:00.0: gr: GPC0/TPC0/TEX: 80000049
[425014.692083] nouveau 0000:01:00.0: gr: GPC0/TPC1/TEX: 80000049
[425014.692092] nouveau 0000:01:00.0: fifo: read fault at 0001500000 engine 00 [PGRAPH] client 01 [GPC0/TEX] reason 02 [PAGE_NOT_PRESENT] on channel 9 [003f93c000 plasmashell[16602]]
[425014.692094] nouveau 0000:01:00.0: fifo: gr engine fault on channel 9, recovering...
[425014.692301] nouveau 0000:01:00.0: plasmashell[16602]: channel 9 killed!

I am running Debian 9, with the KDE desktop environment (Plasma 5.8). My kernel version is 4.14.

Please let me know if there is any other information I can provide to help diagnose the issue.

Comment 1 Nathan Ridge 2018-03-05 18:02:11 UTC

I should add that this started happening after upgrading my kernel from 4.9 to 4.14.

After downgrading the kernel back to 4.9, the problem no longer occurs.

Comment 2 GitLab Migration User 2019-09-18 20:46:19 UTC

-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/mesa/mesa/issues/1149.

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