Ubuntu 16.04 is not detecting the correct resolution/ratio of my external 34"-screen which is connected via HDMI to my notebook.
Detected resolution: 3840 x 2160 (16:9); desired resolution: 3440 x 1440 (21:9).
I followed this thread, but it's not working and I don't know why. I don't see an error message. Where is the log-file located?
What I did:
cvt 3440 1440 60
xrandr --newmode "3440x1440_60.00" 419.50 3440 3696 4064 4688 1440 1443 1453 1493 -hsync +vsync
xrandr --addmode DP-1 "3440x1440_60.00"
xrandr --output DP-1 --mode "3440x1440_60.00"
I downloaded the xrandr GUI ARandR where I can select the new mode, but then the screen goes black, it switches back to the default screen (notebook) and after a few seconds I'm back where I started (16:9).
Edit: I works perfectly with 30hz, but the screen is supposed to support 75hz which doesn't work either.
Any idea? Thanks!
