Bug 93721

Summary:	Error: Unclaimed register before interrupt
Product:	Drivers	Reporter:	Larry Finger (Larry.Finger)
Component:	Video(DRI - Intel)	Assignee:	intel-gfx-bugs (intel-gfx-bugs)
Status:	RESOLVED OBSOLETE
Severity:	normal	CC:	intel-gfx-bugs
Priority:	P3
Hardware:	x86-64
OS:	Linux
Kernel Version:	4.0-rc1	Subsystem:
Regression:	No	Bisected commit-id:

Description Larry Finger 2015-02-24 03:02:16 UTC

Intermittently, the i915 driver reports the following:

[drm:intel_uncore_check_errors [i915]] *ERROR* Unclaimed register before interrupt

These errors do not seem to interfere with system operation - they just spam the logs.

This error was seem in 3.19, but not reported there. I do not know if it happened with earlier kernels.

If debugging info is needed, please provide the startup parameter needed.

Comment 1 Jani Nikula 2015-06-16 10:15:54 UTC

Not sure if it'll help, but please try to reproduce the issue with later kernels with i915.mmio_debug=10 and drm.debug=14 module parameters set.

Please attach the dmesg anyway so we'll know a bit more about your system.

Comment 2 Jani Nikula 2015-10-07 10:58:04 UTC

Long time no updates, closing.

If the problem persists with latest kernels, please file a bug at the freedesktop.org bugzilla [1], referencing this bug. Thank you.

[1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel