Bug 70689

Summary:	Periodic system freezes on Linux 3.11-rc4 and later
Product:	DRI	Reporter:	Armin K <krejzi>
Component:	DRM/Radeon	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Armin K 2013-10-20 19:17:56 UTC

Ever since Linux 3.11-rc4 (still present in 3.12-rc6), when both Radeon and Intel GPUs are enabled on a hybrid graphics laptop, system freezes (well, the picture freezes) every minute or two, then unfreezes and so on, making system unusable.

When I disable radeon graphics card via vgaswitcheroo, freezes stop.

I have, however, discovered that when radeon driver gets loaded before i915 one, freezes happen. If i915 manages to get loaded before radeon, freezes don't happen. When both are built into kernel, radeon driver gets always loaded before i915.

This behaviour wasn't present in 3.11-rc3 kernel. Discrete card is Radeon HD 6450M and integrated one is Intel HD 3000.

Comment 1 Alex Deucher 2013-10-21 17:25:30 UTC

Can you bisect?

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