[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

[bugzilla-daemon]

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

            Bug ID: 110641
           Summary: lm_sensors reports "ERROR: Can't get value of
                    subfeature in0_input: Can't read"
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: bong.cosca@gmail.com

Alex Deucher <alexander.deucher@amd.com> 2017-03-08 18:25:15 -0500
drm/amdgpu: expose GPU sensor related information
commit 5ebbac4b5c9159130046bf7c56b7f4c71ca7d1b7

This particular commit introduced this error.

$ sensors -j

{
   "amdgpu-pci-0008":{
      "Adapter": "PCI adapter",
      "vddgfx":{
ERROR: Can't get value of subfeature in0_input: Can't read

      },
      "vddnb":{
ERROR: Can't get value of subfeature in1_input: Can't read

      },
      "temp1":{
         "temp1_input": 12.000,
         "temp1_crit": 120.000,
         "temp1_crit_hyst": 90.000
      }
   },
   "it8603-isa-0290":{
      "Adapter": "ISA adapter",
      "CPU Fan":{
         "fan1_input": 2509.000,
         "fan1_min": 200.000,
         "fan1_alarm": 0.000
      },
      "Mobo Fan":{
         "fan2_input": 0.000,
         "fan2_min": 600.000,
         "fan2_alarm": 1.000
      },
      "AMD A6-7400K Radeon R5":{
         "temp1_input": 44.000,
         "temp1_max": 127.000,
         "temp1_min": -45.000,
         "temp1_alarm": 0.000,
         "temp1_type": 4.000,
         "temp1_offset": 0.000
      },
      "Asus A68HM-K Mobo":{
         "temp2_input": 45.000,
         "temp2_max": -33.000,
         "temp2_min": 53.000,
         "temp2_alarm": 1.000,
         "temp2_type": 4.000,
         "temp2_offset": 0.000
      }
   }
}

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #1 from Alex Deucher <alexdeucher@gmail.com> ---
That commit just exposes the temperature via an ioctl interface.  It doesn't
affect the hwmon sysfs API.  How did you determine that that was the
problematic one?

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #2 from Bong Cosca <bong.cosca@gmail.com> ---
It wasn't the case before when VDDGFX and VDDNB were not exposed. Are these
(and the missing in0_input/in1_input probes) present on APUs?

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #3 from Alex Deucher <alexdeucher@gmail.com> ---
What chip do you have?  Voltage hwmon is not implemented on all APUs.

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #4 from Bong Cosca <bong.cosca@gmail.com> ---
AMD A6-7400K Radeon R5

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #5 from Alex Deucher <alexdeucher@gmail.com> ---
(In reply to Bong Cosca from comment #4)
> AMD A6-7400K Radeon R5

No hwmon support for voltage on that family.

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

--- Comment #6 from Bong Cosca <bong.cosca@gmail.com> ---
So does it make sense to expose VDDGFX and VDDNB at all? Or should this be
fixed in lm_sensors?

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[Bug 110641] lm_sensors reports "ERROR: Can't get value of subfeature in0_input: Can't read"

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https://bugs.freedesktop.org/show_bug.cgi?id=110641

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #7 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/779.

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