[Bug 27478] Radeon gamma bug, display too bright when using DVI-VGA adapter

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27478

--- Comment #15 from Alex Deucher <agd5f at yahoo.com> 2010-04-06 09:01:17 PDT ---
(In reply to comment #14)
> Created an attachment (id=34715)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=34715)
> rv100_xorg_dmesg_vbios.tgz
> 
> My video card has a single connector that looks to be a dual link DVI M1-DA.
> This image matches the pins on my adapter:
> http://en.wikipedia.org/wiki/File:M1-DA.svg
> I am using a cable that goes from that dual link above, to 2x VGA. I'm only
> using VGA #1 on this computer. 

perfect.  thanks!

> 
> The output of radeontool regmatch DAC_MACRO_CNTL:
> DAC_MACRO_CNTL (0d04)    0x00000000 (0)
> (all the repetitive zeros that follow are excluded)

Does:
radeontool regset DAC_MACRO_CNTL 0x00000808
fix the issue?

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