Bug 70689 - Periodic system freezes on Linux 3.11-rc4 and later
Summary: Periodic system freezes on Linux 3.11-rc4 and later
Status: RESOLVED INVALID
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Default DRI bug account
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Reported: 2013-10-20 19:17 UTC by Armin K
Modified: 2015-07-13 20:26 UTC (History)
0 users

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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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