[coreboot] "Fix multipleVGA cards resource conflict on Windows" broke my vga

Russell Whitaker russ at ashlandhome.net
Wed Feb 15 08:07:50 CET 2012

On Tue, 14 Feb 2012, Marc Jones wrote:

> Hi Denis,
> On Tue, Feb 14, 2012 at 5:31 AM, Denis 'GNUtoo' Carikli
> <GNUtoo at no-log.org> wrote:
>> hi,
>> I've an M4A785T-M which contains one onboard graphic card,
>> but it has 2 VGA extension roms.
>> one seem to be for HDMI, and the other for VGA.
> That sounds strange. I think that they are basicly the same output and
> should have a single rom. Are there two device IDs? If there are two
> devices, it seems that there is a problem selecting the default and
> allocating the decode correctly.
>> reverting the commit makes VGA appear on my monitor.
>> I've tried to add one option rom only, as usual, and nothing appeared on my
>> monitor with that comit.
>> Then I removed the VGA rom and with cbfstool I added both VGA rom.
>> Nothing appeared on my monitor either...
>> Should I give some logs(it's quite long to get since I've to reflash with an
>> external programmer).
>> Denis.
> Logs would help, but you could some analysis about what setting is
> making the device work or not.
> Marc
Could the two roms be interleaved? If they have 8bit data, then
one might be bits 0-7 and the other 8-15.

Just a thought.

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