Multi gpu display

[Alex Deucher]

On Tue, Jul 4, 2017 at 1:22 AM, zhoucm1 <david1.zhou at amd.com> wrote:
>
>
> On 2017年07月04日 11:41, Alex Deucher wrote:
>>
>> On Mon, Jul 3, 2017 at 4:32 AM, zhoucm1 <david1.zhou at amd.com> wrote:
>>>
>>> Hi xorg-devel guys,
>>>
>>> Anyone can help me?
>>>
>>> I tried two gpu card with four monitors on Unbuntu 16.04, each gpu has
>>> two
>>> monitors.
>>> By default config, I can see four monitors all are lighting with its
>>> separate desktop instance, and the running application with small window
>>> can
>>> be spanning all monitors, but if application only can be run on one of
>>> monitros with fullscreen setting. I attached Xorg log and xrandr output
>>> info.
>>>
>>> How should I configure if I want to all monitors as a big desktop or the
>>> full screen application can run on all monitors? or How should I
>>> do/change?
>>
>> You'd need to configure it in the window manager.  Most window
>> managers use the geometry info advertised via randr to define what is
>> considered full screen.  You need to tell it to ignore that and just
>> use the full surface size.  How to do that varies from window manager
>> to window manager.
>
> Thanks Alex for input.
> I'm using ubuntu16.04, which window manager should be compiz, how to tell it
> to ignore that and just use the full surface size.

https://askubuntu.com/questions/73573/how-to-maximise-a-window-across-two-monitors
Also, looks like wmctrl works as well.

Alex

>
> Regards,
> David Zhou
>>
>>
>> Alex
>
>