| Summary: |
[SNB regression] CPU is running hot with kernel 3.12.0 |
| Product: |
DRI
|
Reporter: |
erik |
| Component: |
DRM/Intel | Assignee: |
Daniel Vetter <daniel> |
| Status: |
CLOSED
FIXED
|
QA Contact: |
Intel GFX Bugs mailing list <intel-gfx-bugs> |
| Severity: |
major
|
|
|
| Priority: |
medium
|
CC: |
erik, intel-gfx-bugs
|
| Version: |
unspecified | |
|
| Hardware: |
x86-64 (AMD64) | |
|
| OS: |
Linux (All) | |
|
| Whiteboard: |
|
|
i915 platform:
|
|
i915 features:
|
|
|---|
| Attachments: |
|
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Created attachment 89278 [details] Turbostat output, System is idle in the last two stats Hi, With kernel 3.12 my Sandybridge Laptop (Lenovo T420) gets easily heated up. As soon as I start openarena the CPU reaches ~96°C and stays there. It won't cool down, even when idle. The only way to cool the system down is a reboot or suspend to ram. A bisect between Linux 3.11 and 3.12 identified 351aa5666d02062b52329bcfe4bcf9d1f882fba9 (drm/i915: tune the RC6 threshold for stability) as bad commit. Indeed reverting this commit on 3.12 fixes the problem. I have attached the turbostat output. The CPU is Intel(R) Core(TM) i5-2520M CPU @ 2.50GHz. Graphic is 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)