[SeaBIOS] seabios issue

Roger Lawhorn rll at twc.com
Sun Jul 1 04:59:20 CEST 2018

i had to use nomodeset on boot.
i have nvidia optimus.
not only does the nvidia and nouveau drivers grab and hold my video 
chips, but now i915 does also.
i915 driver was the issue.
with nomodeset i am running fbdev and nothing else.
it all works now.

On 06/30/2018 09:31 PM, Kevin O'Connor wrote:
> On Wed, Jun 20, 2018 at 04:39:33PM -0400, Roger Lawhorn wrote:
>> Hello,
>> Recently my qemu with gpu passthrough setup quit working.
>> I think it is seabios related.
>> i have turned on debugging for seabios.
>> Here is the output from seabios from a successful windows 10 boot using an
>> emulated vga adapter:
>> https://pastebin.com/f3DCqTbc
>> Here is the output when using my nvidia gtx 880m 8gb gaming card:
>> https://pastebin.com/GpWKZadh
> The last message in that log:
> Running option rom at c000:0003
> indicates that SeaBIOS executed the option rom.  Likely, the option
> rom code failed and never returned to SeaBIOS.  Unfortunately, there's
> no good way to debug what went wrong as we don't have access to the
> option rom code.
> If this is a regression, you might try going through "git bisect" with
> qemu and/or seabios to try and determine what change resulted in the
> regression.
> -Kevin

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