Bug 33027 - [Evergreen KMS] Crash with garbled screen on mode set
Summary: [Evergreen KMS] Crash with garbled screen on mode set
Alias: None
Product: DRI
Classification: Unclassified
Component: DRM/Radeon (show other bugs)
Version: XOrg git
Hardware: x86-64 (AMD64) Linux (All)
: medium critical
Assignee: Default DRI bug account
QA Contact:
Depends on:
Reported: 2011-01-12 05:55 UTC by Serkan Hosca
Modified: 2011-02-14 15:11 UTC (History)
0 users

See Also:
i915 platform:
i915 features:

Picture of the screen (632.80 KB, image/jpeg)
2011-01-12 05:58 UTC, Serkan Hosca
no flags Details
dmesg from working 2.6.37-12-generic (60.46 KB, text/plain)
2011-01-12 06:03 UTC, Serkan Hosca
no flags Details
xorg log (46.80 KB, text/plain)
2011-01-12 06:04 UTC, Serkan Hosca
no flags Details
add gen2 module option (3.36 KB, patch)
2011-01-12 15:01 UTC, Alex Deucher
no flags Details | Splinter Review
lspci (10.27 KB, text/plain)
2011-01-12 15:03 UTC, Serkan Hosca
no flags Details

Description Serkan Hosca 2011-01-12 05:55:19 UTC
Ever since Linus merged drm-next, laptop crashes with garbled screen on modeset during boot. I haven't tried to ssh to the laptop yet.
Comment 1 Serkan Hosca 2011-01-12 05:58:21 UTC
Created attachment 41921 [details]
Picture of the screen
Comment 2 Serkan Hosca 2011-01-12 06:03:35 UTC
Created attachment 41922 [details]
dmesg from working 2.6.37-12-generic
Comment 3 Serkan Hosca 2011-01-12 06:04:25 UTC
Created attachment 41923 [details]
xorg log
Comment 4 Alex Deucher 2011-01-12 08:52:57 UTC
Can you bisect?
Comment 5 Serkan Hosca 2011-01-12 13:45:01 UTC
After countless reboots:

9e46a48df24f9698b34d28385b320c529851e5f7 is the first bad commit
commit 9e46a48df24f9698b34d28385b320c529851e5f7
Author: Alex Deucher <alexdeucher@gmail.com>
Date:   Thu Jan 6 18:49:35 2011 -0500

    drm/radeon/kms: add support for gen2 pcie link speeds
    Supported on rv6xx/r7xx/evergreen.  Cards come up in gen1 mode.
    Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

:040000 040000 55843e87128e6be0103a644d565aa42cadfaa331 7c9afe069f4bc71eb2f815cf3e8fe0a9c96d7be8 M	drivers
Comment 6 Alex Deucher 2011-01-12 15:01:15 UTC
Created attachment 41939 [details] [review]
add gen2 module option

Seems there may be gen2 compat issues with some motherboards.  What chipset is your system?  Can you attach the lspci -vnn output?
Comment 7 Serkan Hosca 2011-01-12 15:03:38 UTC
Created attachment 41940 [details]
Comment 8 Serkan Hosca 2011-01-12 15:18:47 UTC
Its a second generation HP envy 15. According to google the chipset is PM55.
Comment 9 Serkan Hosca 2011-01-12 15:44:08 UTC
gen2 patch fixed the problem.

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