randr 1.2: Primary Output for Laptop + external Screen

[Andreas Schildbach]

Hi everyone,

I'd like to hear your opinion on the desired behavior of the video 
drivers in typical laptop situations with an internal display and an 
external screen attached (extending the desktop).

Currently for example the intel driver uses the external screen as the 
primary output. It is listed first with xrandr. I'm not sure if this is 
intentional or just coincidence.

I think in these situations the internal display should always come 
first. The reason is that the GDM login screen appears on this output, 
as well as screensaver unlock dialogs. There may be more examples. With 
them appearing on the laptop display you can be sure they can be seen. 
An external screen can be attached but switched off, or switched to a 
different input.

Regards,

Andreas