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Tasklist

FS#14565 - kernel26-2.6.29.2 low color depth with KMS

Attached to Project: Arch Linux
Opened by Alberto Gonzalez (Luis) - Sunday, 03 May 2009, 18:55 GMT
Last edited by Tobias Powalowski (tpowa) - Saturday, 09 May 2009, 13:38 GMT
Task Type Bug Report
Category Packages: Core
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture i686
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description: After upgrading to 2.6.29.2 on my HP mini netbook (with the typical intel netbook chip + atom) I experience something strange. With KMS enabled I get something like a low color depth in X. I notice it just in KDM background image, that has some gradients easily visible instead of being smooth. As if I was using 16 bit color instead of 24 bit.

However, there is nothing strange in dmesg or /var/log/Xorg.0.log, where it says it's using 24 bit color.

It worked good with kernel26-2.6.29.1.
This task depends upon

Closed by  Tobias Powalowski (tpowa)
Saturday, 09 May 2009, 13:38 GMT
Reason for closing:  Fixed
Comment by Jan de Groot (JGC) - Sunday, 03 May 2009, 18:59 GMT
Looks like the removed dither patch was still needed. Tpowa: didn't it apply anymore?
Comment by Tobias Powalowski (tpowa) - Monday, 04 May 2009, 16:02 GMT
ah, sorry thought everything was merged in any links to a patch?
Comment by Alberto Gonzalez (Luis) - Monday, 04 May 2009, 16:58 GMT
The patch is present in 2.6.30-rc, but it wasn't merged into the stable 2.6.29.2 release. You can find it here:

http://bugs.freedesktop.org/show_bug.cgi?id=20997 (it's the "LVDS dither KMS fix")

Thanks.

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