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

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Tue Apr 6 08:01:31 PDT 2010


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

--- Comment #10 from Tim Champion <timchampion at gmail.com> 2010-04-06 08:01:31 PDT ---
>that looks correct.  Does:
>radeontool regset TV_DAC_CNTL 0x07280043
>help?

Nope, has no effect. - unless I need to restart X in order for it to take
effect. (I did not restart X)

>You'll need the pci bus id from lspci, e.g.,
>01:05.0 VGA compatible controller: ATI Technologies Inc RS690
>^^^^^^^
>It will have some leading zeros in sysfs.
>
>cd /sys/bus/pci/devices/<pci bus id>
>echo 1 > rom
>cat rom > /tmp/vbios.rom
>echo 0 > rom

Ok, I feel inept here. I preformed the above as root, and I'm not sure what I
should be posting as a result. do you want the contents of
/sys/bus/pci/devices/0000:01:00.0/rom ? 

I displayed /tmp/vbios.rom, and it appeared to be a binary file. As a
shot-in-the-dark, I'll add /tmp/vbios.rom as an attachment in just a moment
here.

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