[Bug 107628] New: On GeForce 8200M G, driver reports wild temperature fluctuations, effectively blocking the system at boot

* [Bug 107628] New: On GeForce 8200M G, driver reports wild temperature fluctuations, effectively blocking the system at boot
@ 2018-08-20 18:43 bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
       [not found] ` <bug-107628-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
  0 siblings, 1 reply; 2+ messages in thread
From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ @ 2018-08-20 18:43 UTC (permalink / raw)
  To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW

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https://bugs.freedesktop.org/show_bug.cgi?id=107628

            Bug ID: 107628
           Summary: On GeForce 8200M G, driver reports wild temperature
                    fluctuations, effectively blocking the system at boot
           Product: xorg
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
          Assignee: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
          Reporter: rbergen-qWit8jRvyhVmR6Xm/wNWPw@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

First off, I want to state that I'm aware that I am filing a report that
concerns a Compaq Presario CQ60 which a) is close to 10 years old, and b) may
well have the worst GPU cooling setup in the history of computing. I will
therefore completely understand if everybody here concludes they have better
ways to spend their time than worrying about this.

That said, the CQ60 has an GeForce 8200M G built in and I'm running Gentoo
x86_64 on said laptop with kernel version 4.14.63. 

When I boot the laptop with nouveau either built into the kernel or as a
module, as soon as the driver loads, the screen is continuously flooded with
messages relating to the GPU temperature either hitting or going below a range
of thresholds. The messages have the format: 

[<timestamp>] nouveau 0000:02:00.0: therm: temperature (<x> C) hit/went below
the '<threshold>' threshold

The temperatures reported vary wildly between subsequent messages, as in
literally jumping from between below 0 and well above 150 degrees (and vice
versa).

When this happens I am unable to use Ctrl-Alt-Del to reboot and have to do a
hard power-down for it to stop. I can boot successfully provided I pass
nouveau.modeset=0 on the kernel command line.

I am currently unable to provide dmesg output as the problem occurs during boot
before a command prompt is presented that I could use to secure the log. I do
have a mobile phone video recording available of the laptop screen when the
problem occurs, in case that helps.

Windows 10 runs fine on this laptop with the nVidia drivers it pulls off the
Internet during installation. Under Windows, HWiNFO reports mostly stable GPU
temperatures of around 85 C.

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