hybrid-graphics-linux team mailing list archive

[Albert Vilella <avilella@xxxxxxxxx>]

Unless this Dell XPS 17 is different to many of the nvidia optimus
laptop models, I think it's the Intel drivers not playing well with
the HDMI output. My laptop is an nvidia optimus, has an HDMI output
and a VGA output, and I can reproduce the problems here described with
HDMI, but everything works well with VGA. I've tried different
resolutions on different external screens, and where VGA works just
fine, HDMI doesn't work well.

It may be that the wiring in the laptop model is different for VGA
than HDMI, but I haven't seen anyone else complaining about VGA output
on the mailing list. I think it's worth having a look to where the
problem may be in the Dell XPS 17 with a proper bug report.

On Sat, Aug 20, 2011 at 2:00 PM, Dave Airlie <airlied@xxxxxxxxx> wrote:
> On Sat, Aug 20, 2011 at 10:58 AM, Albert Vilella <avilella@xxxxxxxxx> wrote:
>> I think it may be that your intel drivers aren't playing well with the
>> HDMI+External monitor combination. Can you submit a bug report against
>> xorg? In a terminal, type:
>
> If by you mean they see a monitor but don't display or light it up,
> welcome to optimus.
>
> Not something we can fix in software.
>
> Dave.
>