Bug 36777

Summary:	radeon 0000:01:00.0: IH ring buffer overflow (0xFFFFFFFF, 15, 65550)
Product:	DRI	Reporter:	Cedric Sodhi <manday>
Component:	DRM/Radeon	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Cedric Sodhi 2011-05-02 09:13:58 UTC

VGASwitcheroo enabled hybrid setup with Intel Arrandale and Radeon CEDAR

01:00.0 0300: 1002:68e0 (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel driver in use: radeon

(lspci -vn). When the Radeon is powered down and X is running dmesg is filled up with thousands of 

radeon 0000:01:00.0: IH ring buffer overflow (0xFFFFFFFF, 15, 65550)

which does not disappear, even if debug is disabled. I think the radeon driver does not understand that it's card is powered down. Can this be fixed?

Comment 1 Fabian Deutsch 2011-06-10 11:33:12 UTC

There seems to be something up with "the ring", I've got a problem since post 2.6.35: https://bugzilla.redhat.com/show_bug.cgi?id=691326

Comment 2 Alex Deucher 2011-10-05 06:11:40 UTC

I think this should be fixed in a newer kernel.  Can you try with a newer kernel?

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