Ubuntu
xorg-server package

  1. Bug #1895301
  2. Comment #6

Comment 6 for bug 1895301

Revision history for this message
Marius Gedminas (mgedmin) wrote :

I once had trouble getting full native resolution on an external 2560x1080 monitor. It turned out to be a problem with the DisplayPort -> HDMI monitor cable I had (not enough bandwidth without using a custom reduced frequency mode via xrandr/way harded custom EDID hacks for wayland), and switching to a better cable (DP -> DP, rated for 4K video) allowed me full use of the monitor.

Have you ruled out hardware/cable problems by, e.g. booting to a different OS, or trying a different cable?