I recently upgraded to tumbleweed from Leap 15 to see if I could fix a problem with some erratic touchpad behavior. The upgrade seems to have fixed the touchpad problem but now the fan on my HP laptop is running all the time. With Leap this laptop was dead quiet–the fan hardly ever came on. Does anyone have any ideas about how I might identify the problem?
It’s a very new laptop, purchased just three months ago. It was very quiet on debian, and also very quiet on Leap 15, which I was running until this morning. No dust, but I blew some compressed air in the vents anyway. The fan stays quiet if I boot into TWM. So I’m pretty sure it’s something related to Plasma. The laptop’s bios is also up to date.
Ok, thanks for the additional information - saves speculating. The temperature readings seem to be reasonable. Are you able to try another desktop environment, or perhaps switch to multi-user.target with
systemctl isolate multi-user.target
and change to a VT console (eg Ctrl-Alt-F2). Does the fan stay running?
I’m just trying to establish if it is only when a graphical environment starts that you observe this ‘full speed’ fan behaviour.
I entered runlevel 3 as you suggested. The fan did not run. While I was in runlevel 3 I logged on, still no fan noise. Then I entered “startx” and the fan turned on again once the graphical interface started.
Does your EliteBook BIOS include an explicit option for fan control by chance?
The BIOS does have an option called “Fan always on while on AC power” but it is unchecked.
I think the OP was referring to the TWM desktop.
That’s right–I was referring to TWM.
FWIW, interesting discussion here on same topic for different model EliteBook
Something clearly changed when I upgraded to Tumbleweed today. As I said, I had been running Leap 15 for a few weeks and I rarely heard the fan. So it seems unlikely that there’s anything wrong with the laptop. Is it possible to revert back to Leap? Failing that I’ll probably re-install Leap. The fan noise is annoying.