cat /sys/class/drm/card0/device/hwmon/hwmon0/temp1_input
Should give temperature:
Mine right now is:
29000
which apparently is 29C.
/sys/class/drm/card0/device/hwmon/hwmon0/pwm1
is the power management.
I returned home yesterday.
It seems the temperature here isn't out of the ordinary:
$ cat /sys/class/drm/card0/device/hwmon/hwmon1/temp1_input
37000
(The machine has been on for 4 hours now.)
I read Pankaj's problem disappeared after upgrading his kernel to 5.10.
I don't think that would help here as I have been on the 5.15 series for
quite some time now.
I still think it is a firmware problem as I am reasonably sure I've
eliminated all hardware factors from the equation.
Ah well. It isn't a serious issue. I can live with it. Maybe sometime in
the future it will be solved.
Grx HdV