Mailinglist Archive: opensuse-bugs (4297 mails)

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[Bug 1040718] Backlight Control Lost with Install of NVidia Driver on 42.2, fix for 42.3?
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 26 May 2017 21:02:19 +0000
  • Message-id: <bug-1040718-21960-7RJICBZrJ4@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1040718
http://bugzilla.opensuse.org/show_bug.cgi?id=1040718#c9

--- Comment #9 from David Rankin <drankinatty@xxxxxxxxxxxxxxxxxx> ---
There is also another side-effect of installing the nvidia drivers, that may,
may not be a result of the sysfs issue. With the nouveau driver, when the
display goes to sleep, the computer settles down and doesn't make another peep
until you move the mouse to wake the display up. Fans fully powered down, no
noticeable noise.

With the nvidia driver, the display goes to sleep as it should, but the fans
never power down completely. Then every 10-20 minutes, the computer fans kick
on and something cycles and then the computer settles down again a minute
later. (the display stays asleep, but something is kicking on) The computer
never settles down to the level it does with the nouveau drivers (close, but
there is low notable fans noise that never abates).

I don't know if this is the chip not being completely powered down and it is
just causing the fan to cycle when the temp hits the lower fan-on threshold, or
whether something is actually cycling looking for a sysfs interface. I'm not
sure what to check here. The operating gpu temp seems fine under normal use,
e.g.

$ nvidia-settings -q gpucoretemp

Attribute 'GPUCoreTemp' (wizard:0.0): 37.
<snip>
Attribute 'GPUCoreTemp' (wizard:0[gpu:0]): 37.

I thought I would add this to the mix in case anything is comes to mind in this
regard as the sysfs issue is looked at. I can set a script to log gpu temp if
you think that would help.

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