The external HDMI monitor is unseen in my Ubuntu partition. Moreover I cannot change my display setting of the integrated monitor (resolution, refresh, etc.)
xrandr command reports:
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected primary 1920x1080+0+0 0mm x 0mm
I tried several versions of nvidia drivers and x.org, I installed Ubuntu and Xubuntu, I tried lightdm and gdm3, nothing worked.
I found somebody having a similar issues in this thread: https://www.dell.com/community/Precision-Mobile-Workstations/External-Monitor-not-working-Ubuntu-nvidia/td-p/6241315 but the solution proposed doesn’t work.
attached the nvidia-bug-report.log
nvidia-bug-report.log.gz (1.08 MB)