Ubuntu
xserver-xorg-video-intel package

  1. Bug #1307623
  2. Comment #2

Comment 2 for bug 1307623

Revision history for this message
Chunlei Wu (anewgene) wrote :

I tried "Adding undetected resolutions" section from here (https://wiki.ubuntu.com/X/Config/Resolution#Adding_undetected_resolutions):

$ cvt 2560 1600 60
$ xrandr --newmode "2560x1600_60" 348.50 2560 2760 3032 3504 1600 1603 1609 1658 -hsync +vsync
$ xrandr --addmode DP2 2560x1600_60
$ xrandr --output DP2 --mode 2560x1600_60

Then I got the error "xrandr: Configure crtc 0 failed".

However, "2560x1440" resolution actually works fine:

$ xrandr --output DP2 --mode 2560x1440

"2560x1440" is an available mode, so I don't need to add it.