Asus U38N: Unable to get Video BIOS on Radeon HD 7600G

[Alex Deucher]

On Sat, Jan 11, 2014 at 4:23 PM, Paul Menzel
<paulepanter at users.sourceforge.net> wrote:
> Dear Linux developers,
>
>
> as reported in the channel #radeon on <irc.freenode.net>, I am not able
> to dump the Video BIOS on my Asus U38N-C4010H with AMD Radeon HD 7600G
> (Trinity A8-4555M).
>
> I am using Debian Sid/unstable with Linux version 3.12-1-amd64
> (3.12.6-2).
>
>         $ cd /sys/devices/pci0000\:00/0000\:00\:01.0/
>         $ echo 1 | sudo tee rom
>         1
>         $ sudo cat rom > /tmp/vbios.rom
>         cat: rom: Input/output error
>
> Am I doing something wrong or is this an error in the code?
>

On certain UEFI systems, we may need to use an alternative method to
fetch the vbios, so we probably need to export it from the driver via
debugfs.

Alex

>
> Thanks,
>
> Paul
>
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