Bug 25842

Summary: thinkpad T410s intel i915 regression
Product: Drivers Reporter: Travis Hume (travis)
Component: Video(DRI - Intel)Assignee: drivers_video-dri-intel (drivers_video-dri-intel)
Status: CLOSED CODE_FIX    
Severity: high CC: florian, gordon.jin, maciej.rutecki, rjw
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 2.6.37-rc8 Tree: Mainline
Regression: Yes
Bug Depends on:    
Bug Blocks: 21782    

Description Travis Hume 2010-12-29 18:21:53 UTC
2.6.37-rc7 working great.

built 2.6.37-rc8 this morning and screen is unusable.  Off center to the right by about 200 px and very jittery.

Sorry for the overly technical description :)


Ubuntu 10.10
From lshw:

        *-display
             description: VGA compatible controller
             product: Core Processor Integrated Graphics Controller
             vendor: Intel Corporation
             physical id: 2
             bus info: pci@0000:00:02.0
             version: 02
             width: 64 bits
             clock: 33MHz
             capabilities: msi pm vga_controller bus_master cap_list rom
             configuration: driver=i915 latency=0
             resources: irq:43 memory:f2000000-f23fffff memory:d0000000-dfffffff ioport:1800(size=8)
Comment 1 Gordon Jin 2010-12-30 00:32:50 UTC
Can you try if this regression is caused by the commit mentioned in https://bugs.freedesktop.org/show_bug.cgi?id=32698?
Comment 2 Travis Hume 2010-12-30 03:06:42 UTC
Success!! I reverted that commit and rebuilt.  Everything working great again.

git co v2.6.37-rc8
git revert 448f53a1ede54eb854d036abf54573281412d650
Finished one revert.
[detached HEAD b273081] Revert "drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks"
 1 files changed, 1 insertions(+), 1 deletions(-)