I have a laptop (Thinkpad X220t) freshly reinstalled with latest openSuSE (I did not yet have time to check under other distributions).
I installed Trinity over Gnome 3; If I boot and start Trinity (first user) I have nothing on the external screen (which is a beamer, 1024x768). Internal screen is at 1366*900.
If I start a second user (under Gnome) the internal screen resizes to 1024x768 and I get an image on the beamer.
Thierry
On Monday 28 August 2017 12:53:39 Thierry de Coulon wrote:
I have a laptop (Thinkpad X220t) freshly reinstalled with latest openSuSE (I did not yet have time to check under other distributions).
I installed Trinity over Gnome 3; If I boot and start Trinity (first user) I have nothing on the external screen (which is a beamer, 1024x768). Internal screen is at 1366*900.
If I start a second user (under Gnome) the internal screen resizes to 1024x768 and I get an image on the beamer.
Thierry
lol, i have a t40 XD I don't have two screens. You simply booted in without configuring anything? try control center > system administration > monitor and display > resolution and layout If they are erros, post them here, maybe some one else will help you.
Thierry de Coulon composed on 2017-08-28 12:53 (UTC+0200):
I have a laptop (Thinkpad X220t) freshly reinstalled with latest openSuSE (I did not yet have time to check under other distributions).
I installed Trinity over Gnome 3; If I boot and start Trinity (first user) I have nothing on the external screen (which is a beamer, 1024x768). Internal screen is at 1366*900.
1366x900 is a seriously uncommon resolution. I wonder if Gnome, Xorg or driver devs even know it exists? Does xrandr -q confirm it's what you have? According to https://www.notebookcheck.net/Review-Lenovo-ThinkPad-X220T-4298-2YG-Converti... that model only comes with 1366x768 screens.
If I start a second user (under Gnome) the internal screen resizes to 1024x768 and I get an image on the beamer.
Gnome is very demanding compared to other DEs. If GDM is still installed, removing it might help. Make sure to configure trinity-tdm as your display manager. I have lots of openSUSE installations with KDE3 or TDE, none on laptops, but several with dual displays available. None have ever done as you describe, and GDM is never installed.
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Thierry de Coulon -
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