Bug 3247

Summary:

Setting the DAC mode when depth >8 produces problems with some BIOSes

Product:

xorg

Reporter:

Egbert Eich <eich>

Component:

Driver/Vesa

Assignee:

Egbert Eich <eich>

Status:

RESOLVED DUPLICATE

QA Contact:

Severity:

normal

Priority:

high

CC:

david.c.sterratt, erik.andren, sndirsch, whizzter

Version:

git

Keywords:

patch

Hardware:

All

OS:

All

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
Simple Fix	none

Description Egbert Eich 2005-05-09 09:39:13 UTC

Setting the DAC Palette format with VBE function 0x08 causes problems on some
BIOSes when depth >8.
The attached patch avoids this setting.

Comment 1 Egbert Eich 2005-05-09 09:40:18 UTC

Created attachment 2644 [details] [review]
Simple Fix

Comment 2 Egbert Eich 2005-05-09 10:17:43 UTC

2005-05-09  Egbert Eich  <eich-at-freedesktop-dot-org>

        * programs/Xserver/hw/xfree86/drivers/vesa/vesa.c: (VESASetMode):
        Setting the DAC Palette format with VBE function 0x08 causes
        problems on some BIOSes when depth > 8.
        The attached patch avoids this setting (Bugzilla #3247).

I keep this open in case it is making problems.

Comment 3 Adam Jackson 2005-11-16 08:20:04 UTC

*** Bug 2150 has been marked as a duplicate of this bug. ***

Comment 4 David Sterratt 2005-11-16 09:48:07 UTC

According to Bug 2150 (the duplicate of this bug) the simple patch attached to
this bug report works in some circumstances but is strictly wrong according to
the VESA spec. There is a patch (also very simple) in 2150 that should bring the
driver in line with the VESA spec.

Comment 5 Erik Andren 2006-04-23 06:53:19 UTC

Someone with cvs commit access should evaluate the bug 2150 and this bugs
patches and commit the most proper one.

Comment 6 Jonas Lund 2006-04-28 10:52:49 UTC

Definetly go for the patch that was attached to 2150 as it obeys the spec (and
will work on the affected card that caused me to report earlier).

Comment 7 Erik Andren 2006-05-31 13:19:02 UTC

Link to patch: https://bugs.freedesktop.org/attachment.cgi?id=2065

Comment 8 Daniel Stone 2006-06-03 02:40:23 UTC


*** This bug has been marked as a duplicate of 2150 ***

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