Brightness too high on internal AMD/ATI graphics device, but fine with external AMD/ATI graphics card

[Paul Menzel]

Am Montag, den 07.07.2014, 17:40 -0400 schrieb Alex Deucher:
> On Sat, Jul 5, 2014 at 3:42 AM, Paul Menzel wrote:

> > connecting a VGA monitor to the internal graphics device of the ASRock
> > E350M1 [1], the brightness is much too high.

[…]

> It sounds like the DAC bg/adj values are wrong on that board (they are
> tuned on a per board basis and stored in the bios).  You might try a
> bios upgrade on the board if there is one available.  If not, please
> file a bug (https://bugs.freedesktop.org) and attach a copy of your
> dmesg output, the vbios from the problematic board, and if possible
> the output of `radeonreg regs dce4`.
> 
> To get a copy of your vbios:
> (as root)
> (use lspci to get the bus id)
> cd /sys/bus/pci/devices/<pci bus id>
> echo 1 > rom
> cat rom > /tmp/vbios.rom
> echo 0 > rom
> 
> You can get radeonreg here:
> http://cgit.freedesktop.org/~airlied/radeontool/

Alex, thank you for your reply! The bug I filed was assigned the number
85469 [1].


Thanks,

Paul


[1] https://bugs.freedesktop.org/show_bug.cgi?id=85469
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