[Bug 107325] New: Reported temperature of nvidia card with nouveau driver is wrong - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 107325] New: Reported temperature of nvidia card with nouveau driver is wrong
Date: Sat, 21 Jul 2018 20:36:19 +0000	[thread overview]
Message-ID: <bug-107325-8800@http.bugs.freedesktop.org/> (raw)

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https://bugs.freedesktop.org/show_bug.cgi?id=107325

            Bug ID: 107325
           Summary: Reported temperature of nvidia card with nouveau
                    driver is wrong
           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: j.novak-yL21p0u6sjaEIYLD/85Ykw@public.gmane.org
        QA Contact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org

Hello,

  I use Dell Precision 3530 with NVIDIA Corporation GP107GLM [Quadro P600
Mobile] (rev a1). I use Fedora Core 28 with 4.17.6 x86_64 kernel.
  I found that sensors tool shows wrong temperature:

$ sensors
nouveau-pci-0100
Adapter: PCI adapter
temp1:       +511.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

  Temperature is obviously wrong.
  I tried to troubleshoot it on sensors side and it looks that sensors tool
receives this wrong value from driver.
  I made one more observation - right after suspend/wakeup the value is
completely different:

$ sensors
nouveau-pci-0100
Adapter: PCI adapter
temp1:       +511.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

$ sensors
nouveau-pci-0100
Adapter: PCI adapter
temp1:        +43.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

$ sensors
nouveau-pci-0100
Adapter: PCI adapter
temp1:       +511.0°C  (high = +95.0°C, hyst =  +3.0°C)
                       (crit = +105.0°C, hyst =  +5.0°C)
                       (emerg = +135.0°C, hyst =  +5.0°C)

  I can provide more information when required.

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