* [lm-sensors] Kaveri temps
@ 2014-11-05 21:15 James Cloos
2014-11-05 23:21 ` Guenter Roeck
0 siblings, 1 reply; 9+ messages in thread
From: James Cloos @ 2014-11-05 21:15 UTC (permalink / raw)
To: lm-sensors
I'm getting odd temp readings on an A8-7600 with 3.3.4 and Linus'
current kernel.
Eg, the gpu temp shows up when (mostly) idle as:
radeon-pci-0008
Adapter: PCI adapter
temp1: -1.0°C (crit = +120.0°C, hyst = +90.0°C)
aka:
radeon-pci-0008
Adapter: PCI adapter
temp1: +32.0°F (crit = +248.0°F, hyst = +194.0°F)
And the cpu temp is similar:
k10temp-pci-00c3
Adapter: PCI adapter
temp1: +0.0°C (high = +70.0°C)
(crit = +80.0°C, hyst = +79.0°C)
aka:
k10temp-pci-00c3
Adapter: PCI adapter
temp1: +32.0°F (high = +158.0°F)
(crit = +176.0°F, hyst = +174.2°F)
Is this a known issue?
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
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^ permalink raw reply [flat|nested] 9+ messages in thread* Re: [lm-sensors] Kaveri [and Radeon] temps
2014-11-05 21:15 [lm-sensors] Kaveri temps James Cloos
@ 2014-11-05 23:21 ` Guenter Roeck
0 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2014-11-05 23:21 UTC (permalink / raw)
To: James Cloos; +Cc: dri-devel, lm-sensors
On Wed, Nov 05, 2014 at 04:15:54PM -0500, James Cloos wrote:
> I'm getting odd temp readings on an A8-7600 with 3.3.4 and Linus'
> current kernel.
>
> Eg, the gpu temp shows up when (mostly) idle as:
>
> radeon-pci-0008
> Adapter: PCI adapter
> temp1: -1.0°C (crit = +120.0°C, hyst = +90.0°C)
>
The driver for the Radeon chips is maintained by the radeon driver
maintainers, so you might want to ask at dri-devel@lists.freedesktop.org
(copied with this reply). The driver supports different chips with
different methods to read the temperature, so it might help to know
which chip is in your system (lspci -nn should tell you).
> aka:
>
> radeon-pci-0008
> Adapter: PCI adapter
> temp1: +32.0°F (crit = +248.0°F, hyst = +194.0°F)
>
>
> And the cpu temp is similar:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +0.0°C (high = +70.0°C)
> (crit = +80.0°C, hyst = +79.0°C)
> aka:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +32.0°F (high = +158.0°F)
> (crit = +176.0°F, hyst = +174.2°F)
>
AMD CPUs are known report wildly off temperatures especially at
low temperatures. Does the temperature increase with load ?
Thanks,
Guenter
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Kaveri [and Radeon] temps
@ 2014-11-05 23:21 ` Guenter Roeck
0 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2014-11-05 23:21 UTC (permalink / raw)
To: James Cloos; +Cc: dri-devel, lm-sensors
On Wed, Nov 05, 2014 at 04:15:54PM -0500, James Cloos wrote:
> I'm getting odd temp readings on an A8-7600 with 3.3.4 and Linus'
> current kernel.
>
> Eg, the gpu temp shows up when (mostly) idle as:
>
> radeon-pci-0008
> Adapter: PCI adapter
> temp1: -1.0°C (crit = +120.0°C, hyst = +90.0°C)
>
The driver for the Radeon chips is maintained by the radeon driver
maintainers, so you might want to ask at dri-devel@lists.freedesktop.org
(copied with this reply). The driver supports different chips with
different methods to read the temperature, so it might help to know
which chip is in your system (lspci -nn should tell you).
> aka:
>
> radeon-pci-0008
> Adapter: PCI adapter
> temp1: +32.0°F (crit = +248.0°F, hyst = +194.0°F)
>
>
> And the cpu temp is similar:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +0.0°C (high = +70.0°C)
> (crit = +80.0°C, hyst = +79.0°C)
> aka:
>
> k10temp-pci-00c3
> Adapter: PCI adapter
> temp1: +32.0°F (high = +158.0°F)
> (crit = +176.0°F, hyst = +174.2°F)
>
AMD CPUs are known report wildly off temperatures especially at
low temperatures. Does the temperature increase with load ?
Thanks,
Guenter
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [lm-sensors] Kaveri [and Radeon] temps
2014-11-05 23:21 ` Guenter Roeck
@ 2014-11-05 23:34 ` James Cloos
-1 siblings, 0 replies; 9+ messages in thread
From: James Cloos @ 2014-11-05 23:34 UTC (permalink / raw)
To: lm-sensors; +Cc: dri-devel
>>>>> "GR" = Guenter Roeck <linux@roeck-us.net> writes:
...
GR> AMD CPUs are known report wildly off temperatures especially at
GR> low temperatures.
Thanks. After some further digging, I wonder whether Aravind's recent
patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
F4 device.
GR> Does the temperature increase with load ?
It seems to max out w/in a kelvin or two of the room's ambient temp.
-JimC
--
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Kaveri [and Radeon] temps
@ 2014-11-05 23:34 ` James Cloos
0 siblings, 0 replies; 9+ messages in thread
From: James Cloos @ 2014-11-05 23:34 UTC (permalink / raw)
To: lm-sensors; +Cc: dri-devel
>>>>> "GR" == Guenter Roeck <linux@roeck-us.net> writes:
...
GR> AMD CPUs are known report wildly off temperatures especially at
GR> low temperatures.
Thanks. After some further digging, I wonder whether Aravind's recent
patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
F4 device.
GR> Does the temperature increase with load ?
It seems to max out w/in a kelvin or two of the room's ambient temp.
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [lm-sensors] Kaveri [and Radeon] temps
2014-11-05 23:34 ` James Cloos
@ 2014-11-05 23:50 ` Guenter Roeck
-1 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2014-11-05 23:50 UTC (permalink / raw)
To: James Cloos; +Cc: Aravind Gopalakrishnan, dri-devel, lm-sensors
On Wed, Nov 05, 2014 at 06:34:20PM -0500, James Cloos wrote:
> >>>>> "GR" = Guenter Roeck <linux@roeck-us.net> writes:
>
> ...
> GR> AMD CPUs are known report wildly off temperatures especially at
> GR> low temperatures.
>
> Thanks. After some further digging, I wonder whether Aravind's recent
> patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
> and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
> F4 device.
>
Aravind would have to comment; my understanding is that the F4 device
reports the power, not the temperature. You could try to apply the patch
and see if it makes a difference. Worst case there will be no change ;-).
> GR> Does the temperature increase with load ?
>
> It seems to max out w/in a kelvin or two of the room's ambient temp.
>
Even under load ? Sounds weird. Question of course is if the chip really
reports a useful temperature in the first place; this is something I can
not answer, since I have neither a datasheet nor a system with that CPU.
Guenter
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Kaveri [and Radeon] temps
@ 2014-11-05 23:50 ` Guenter Roeck
0 siblings, 0 replies; 9+ messages in thread
From: Guenter Roeck @ 2014-11-05 23:50 UTC (permalink / raw)
To: James Cloos; +Cc: Aravind Gopalakrishnan, dri-devel, lm-sensors
On Wed, Nov 05, 2014 at 06:34:20PM -0500, James Cloos wrote:
> >>>>> "GR" == Guenter Roeck <linux@roeck-us.net> writes:
>
> ...
> GR> AMD CPUs are known report wildly off temperatures especially at
> GR> low temperatures.
>
> Thanks. After some further digging, I wonder whether Aravind's recent
> patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
> and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
> F4 device.
>
Aravind would have to comment; my understanding is that the F4 device
reports the power, not the temperature. You could try to apply the patch
and see if it makes a difference. Worst case there will be no change ;-).
> GR> Does the temperature increase with load ?
>
> It seems to max out w/in a kelvin or two of the room's ambient temp.
>
Even under load ? Sounds weird. Question of course is if the chip really
reports a useful temperature in the first place; this is something I can
not answer, since I have neither a datasheet nor a system with that CPU.
Guenter
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [lm-sensors] Kaveri [and Radeon] temps
2014-11-05 23:50 ` Guenter Roeck
@ 2014-11-06 15:17 ` Aravind Gopalakrishnan
-1 siblings, 0 replies; 9+ messages in thread
From: Aravind Gopalakrishnan @ 2014-11-06 15:17 UTC (permalink / raw)
To: Guenter Roeck, James Cloos; +Cc: dri-devel, lm-sensors
On 11/5/2014 5:50 PM, Guenter Roeck wrote:
> On Wed, Nov 05, 2014 at 06:34:20PM -0500, James Cloos wrote:
>>>>>>> "GR" = Guenter Roeck <linux@roeck-us.net> writes:
>> ...
>> GR> AMD CPUs are known report wildly off temperatures especially at
>> GR> low temperatures.
>>
>> Thanks. After some further digging, I wonder whether Aravind's recent
>> patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
>> and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
>> F4 device.
>>
> Aravind would have to comment; my understanding is that the F4 device
> reports the power, not the temperature. You could try to apply the patch
> and see if it makes a difference. Worst case there will be no change ;-).
Right, F4 is for reporting power values.
The recent patch was a bug fix for fam15h_power, so I don't think that's
what you are looking for..
>> GR> Does the temperature increase with load ?
>>
>> It seems to max out w/in a kelvin or two of the room's ambient temp.
>>
> Even under load ? Sounds weird.
Yeah, I have not come across such odd behavior neither. So not able to
tell you what might be wrong..
> Question of course is if the chip really
> reports a useful temperature in the first place; this is something I can
> not answer, since I have neither a datasheet nor a system with that CPU.
Yes, the values reported are accurate and AFAIK there are folks who are
interested to look into temperature/power values reported by hwmon, so I
guess it's useful :)
I shall try and ask around if someone knows anything about incorrect
values being exposed in the registers and let you know.
Thanks,
-Aravind
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^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: Kaveri [and Radeon] temps
@ 2014-11-06 15:17 ` Aravind Gopalakrishnan
0 siblings, 0 replies; 9+ messages in thread
From: Aravind Gopalakrishnan @ 2014-11-06 15:17 UTC (permalink / raw)
To: Guenter Roeck, James Cloos; +Cc: dri-devel, lm-sensors
On 11/5/2014 5:50 PM, Guenter Roeck wrote:
> On Wed, Nov 05, 2014 at 06:34:20PM -0500, James Cloos wrote:
>>>>>>> "GR" == Guenter Roeck <linux@roeck-us.net> writes:
>> ...
>> GR> AMD CPUs are known report wildly off temperatures especially at
>> GR> low temperatures.
>>
>> Thanks. After some further digging, I wonder whether Aravind's recent
>> patch might help? The apu does have both PCI_DEVICE_ID_AMD_16H_M30H_NB_F3
>> and PCI_DEVICE_ID_AMD_16H_M30H_NB_F4 and lspci reports no driver for the
>> F4 device.
>>
> Aravind would have to comment; my understanding is that the F4 device
> reports the power, not the temperature. You could try to apply the patch
> and see if it makes a difference. Worst case there will be no change ;-).
Right, F4 is for reporting power values.
The recent patch was a bug fix for fam15h_power, so I don't think that's
what you are looking for..
>> GR> Does the temperature increase with load ?
>>
>> It seems to max out w/in a kelvin or two of the room's ambient temp.
>>
> Even under load ? Sounds weird.
Yeah, I have not come across such odd behavior neither. So not able to
tell you what might be wrong..
> Question of course is if the chip really
> reports a useful temperature in the first place; this is something I can
> not answer, since I have neither a datasheet nor a system with that CPU.
Yes, the values reported are accurate and AFAIK there are folks who are
interested to look into temperature/power values reported by hwmon, so I
guess it's useful :)
I shall try and ask around if someone knows anything about incorrect
values being exposed in the registers and let you know.
Thanks,
-Aravind
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^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2014-11-06 15:17 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2014-11-05 21:15 [lm-sensors] Kaveri temps James Cloos
2014-11-05 23:21 ` [lm-sensors] Kaveri [and Radeon] temps Guenter Roeck
2014-11-05 23:21 ` Guenter Roeck
2014-11-05 23:34 ` [lm-sensors] " James Cloos
2014-11-05 23:34 ` James Cloos
2014-11-05 23:50 ` [lm-sensors] " Guenter Roeck
2014-11-05 23:50 ` Guenter Roeck
2014-11-06 15:17 ` [lm-sensors] " Aravind Gopalakrishnan
2014-11-06 15:17 ` Aravind Gopalakrishnan
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