On Thu June 6 2024 12:51:55 Thierry de Coulon via tde-users wrote:
I use a Lenovo X390, MX-Linux 21.3, with one user using xfce (the "original" DE) and the other using TDE.
When I plug in HDMI (for a beamer, in this case), xfce can easily be set up to mirror the display.
When I use TDE and connect the Beamer (seen as HDMI-2), TDE automatically extends my screen to the beamer. xrandr -- output HDMI-2 --same-as eDP1 (where eDP-1 is the internal screen) does mirror the screen, but it remains extended.
Now if I run "Configure Displays" and select "Enable local Display control for this session" (which was not activated), I do get the mirroring I am looking for. But if I click "Apply" the screen turn to psychedelic colours
- seems to be wating for me to validate the choice, what I can't do and
anyway would not as it's unusable. After a while the sceens returns to my desktop, albeit stil psychedelic, and I must log out / log in to get my desktop back.
So for the time being that means I have to use xfce when I need the beamer.
Anyone knows what's going on and what I should do to mirror my 1920x1080 screen to the HDMI beamer?
FWIW I use T-Menu / System / Screen Size & Rotate to position my three displays and things work fine provided the Brightness and Gamma controls are on default (all 2.2). Any gamma deviation from default and it looks like a bad CGA display and I have to reboot (or run the NVidia X Server Settings tool which also manages to fix whatever broke).
--Mike