Just installed Ubuntu 15.10, and my second monitor does not use the correct resolution. It defaults to 1024x768
, even though it should support 1920x1080
. Previously, on Windows this was not a problem. I had this same problem with this monitor on Arch Linux, and was able to correct it like this:
- The EDID had a bad checksum
- Set the
IgnoreEDIDChecksum
option on the Xorg configuration file In
/etc/X11/xorg.conf
, under theDevice
section:Option "IgnoreEDIDChecksum" "DFP-4"
I'm not able to find that config option in Ubuntu (and I'm not sure if there is a better way to do it). I've also tried adding a new mode through xrandr
, but would get the following error:
xrandr --addmode DVI-D-0 1920x1080_60.00
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 140 (RANDR)
Minor opcode of failed request: 18 (RRAddOutputMode)
Serial number of failed request: 41
Current serial number in output stream: 42
Does anybody know how I can correct the problem, or how I can provide more information? I'm using the proprietary NVIDIA driver (the open source driver would just display a black screen on that monitor).