Bug 10731 - Depth 8bpp causes screen blank
Summary: Depth 8bpp causes screen blank
Status: VERIFIED FIXED
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: git
Hardware: All Linux (All)
: low normal
Assignee: Wang Zhenyu
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2007-04-23 22:32 UTC by xuji
Modified: 2008-02-02 19:38 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

Attachments
xorg.conf (2.72 KB, text/plain)
2007-04-23 22:33 UTC, xuji 		no flags Details
xorg.log (53.03 KB, text/plain)
2007-04-23 22:33 UTC, xuji 		no flags Details
xorg conf file (3.73 KB, text/plain)
2007-11-01 20:19 UTC, Pi, Fengming 		no flags Details
View All

Description xuji 2007-04-23 22:32:06 UTC 
the cursor is visible, glxgears displays an ambiguous outline
but xterm window can't be recognized.
Comment 1 xuji 2007-04-23 22:33:06 UTC 
Created attachment 9705 [details]
xorg.conf
Comment 2 xuji 2007-04-23 22:33:27 UTC 
Created attachment 9706 [details]
xorg.log
Comment 3 xuji 2007-04-23 22:56:09 UTC 
when set colordepth to 15, then screen is totally black, no cursor, no glxgears can be identified.
what's more, after the testing, if set colordepth back to 24, the display also become abnormal that it shining all the time. Only rebooting can make it normal
Comment 4 Jesse Barnes 2007-10-31 13:37:20 UTC 
Does this bug still exist in the latest drivers?
Comment 5 Pi, Fengming 2007-11-01 20:15:58 UTC 
I used the latest driver with EXA and do the testing on 965 platform.this phenomenon is still exist:
when set colordepth to 15, then screen is totally black, no cursor, no glxgears
can be identified.
what's more, after the testing, if set colordepth back to 24, the display also
become abnormal that it shining all the time. Only rebooting can make it normal
Comment 6 Pi, Fengming 2007-11-01 20:19:03 UTC 
Created attachment 12310 [details]
xorg conf file
Comment 7 Wang Zhenyu 2008-01-03 19:23:31 UTC 
It looks it breaks in 8bpp case, it'll take me a while to understand why and how to fix it.

As 8bpp depth is rarely used today (DRI will be disabled), I mark this to be fixed later.
Comment 8 Wang Zhenyu 2008-02-01 00:54:37 UTC 
By a side effect of fixing rotation issues, I also fixed depth 8 issue with properly set LUT.
Comment 9 WuNian 2008-02-02 19:38:24 UTC 
verified. Good job!

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