I see a constant 30% CPU usage in this particular xorg process:
/usr/lib/xorg/Xorg vt2 -displayfd 3 -auth /run/user/1000/gdm/Xauthority -nolisten tcp -background none -noreset -keeptty -novtswitch -verbose 3
With some perf I have found that most of the time is spent on:
- 32,91% 32,65% [vdso] [.] 0000000000000755
- 32,65% clock_gettime
This only happens when the external monitor is plugged in. Since this a laptop with hybrid graphics, the external monitor is connected directly to the Nvidia card.
How I can solve this problem? Because of this, the fans are always on and I can also see that the desktop lags a bit.
I have attached the support script output. nvidia-bug-report.log.gz (461.5 KB)