Bug 20564 - [G965] 2.6.[1-3] Blank screen on X start up.
Summary: [G965] 2.6.[1-3] Blank screen on X start up.
Status: RESOLVED NOTABUG
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Eric Anholt
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-03-09 10:58 UTC by Till Matthiesen
Modified: 2009-03-23 02:53 UTC (History)
1 user (show)

See Also:
i915 platform:
i915 features:

Attachments
Xorg log at blank screen with intel-2.6.3 (7.90 KB, text/plain)
2009-03-09 10:58 UTC, Till Matthiesen 		no flags Details
intel_reg_dumper (blank screen) (7.73 KB, text/plain)
2009-03-09 11:04 UTC, Till Matthiesen 		no flags Details
intel_reg_dumper (working driver) (7.69 KB, text/plain)
2009-03-09 11:06 UTC, Till Matthiesen 		no flags Details
dmesg (30.47 KB, text/plain)
2009-03-09 11:06 UTC, Till Matthiesen 		no flags Details
View All

Description Till Matthiesen 2009-03-09 10:58:46 UTC 
Created attachment 23703 [details]
Xorg log at blank screen with intel-2.6.3

Hi!

Using driver 2.6.[1-3] results in a blank/black screen.
I can not switch VTs, at least the screen stays blank.
Remote log in via ssh is still possible though.

Doing a git bisection I ended up with the following commit:

commit 934008a2cbcec0c790580750c672c0367a9e4c55
Author: Eric Anholt <eric@anholt.net>
Date:   Tue Jan 6 10:55:59 2009 -0800

    Always enable KMS if server's new enough, and remove option.

    The API should be stable at this point, and we don't want to allow
mistakes.

##

machine: DELL OptiPlex 745 with G965
distribution: Gentoo
arch: x86_64
kernel: 2.6.28.7 (vanilla)
connector: DVI-D
xorg-server: 1.5.3

# pkg-config --modversion libdrm
2.4.5

# intel_stepping
Vendor: 0x8086, Device: 0x2992, Revision: 0x02 (C1/C2)

Gentoo bug report:
http://bugs.gentoo.org/show_bug.cgi?id=261021


Thanks for looking into this!
Comment 1 Till Matthiesen 2009-03-09 11:04:22 UTC 
Created attachment 23704 [details]
intel_reg_dumper (blank screen)
Comment 2 Till Matthiesen 2009-03-09 11:06:06 UTC 
Created attachment 23705 [details]
intel_reg_dumper (working driver)

This is a reg dump for a working case using intel-2.5.1.
Comment 3 Till Matthiesen 2009-03-09 11:06:59 UTC 
Created attachment 23706 [details]
dmesg
Comment 4 Wang Zhenyu 2009-03-12 08:56:09 UTC 
Could you attach complete X log?
Comment 5 Till Matthiesen 2009-03-12 10:34:52 UTC 
(In reply to comment #4)
> Could you attach complete X log?

The log file posted is everything X left me with.
I know, it stops suddenly after (during?) probing...
When I get the blank screen the X server is not running anymore.
The screen stays blank unless I restart X with a working driver 
revision or reboot, just switching to another VT leaves me with
a blank screen.

Thanks again.
Comment 6 Till Matthiesen 2009-03-17 09:04:06 UTC 
Using 'startx' X quits with the following error message:

X: symbol lookup error: /usr/lib64/xorg/modules/drivers//intel_drv.so: undefined symbol: drmCheckModesettingSupported

##

xf86-video-intel 2.6.3
xorg-server 1.5.3
Comment 7 Till Matthiesen 2009-03-23 02:53:44 UTC 
Ok, I found the reason for the missing symbol.
There was still an old libdrm 2.3 in /usr/local/lib64 left 
from a manual installation.

After cleaning, everything works as expected.

Sorry for the noise!

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