From: Guenter Roeck <linux@roeck-us.net>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] why does # of temperature sensors decrease in 3.11 (thinkfan config related)
Date: Thu, 22 Aug 2013 16:13:36 +0000 [thread overview]
Message-ID: <20130822161336.GA13004@roeck-us.net> (raw)
In-Reply-To: <52074F4B.5020003@gmx.de>
On Thu, Aug 22, 2013 at 06:09:01PM +0200, Toralf Förster wrote:
> On 08/22/2013 09:32 AM, Jean Delvare wrote:
> > Hi Toralf,
> >
> > On Sun, 11 Aug 2013 10:46:03 +0200, Toralf Förster wrote:
> >> I'm just wondering why the # of sensors at my ThinkPad T420 lowers from
> >> 3 in kernel 3.10 :
> >>
> >> sensor /sys/devices/platform/coretemp.0/temp1_input # physical id 0
> >> sensor /sys/devices/platform/coretemp.0/temp2_input # core 0
> >> sensor /sys/devices/platform/coretemp.0/temp3_input # core 1
> >>
> >> to just one for 3.11:
> >>
> >> /sys/class/hwmon/hwmon0/temp1_input
> >
> > Most likely this is not even the same sensor. Check the value
> > of /sys/class/hwmon/hwmon0/name to find out what this sensor is. Could
> > be the graphics chip temperature readout, or an ACPI thermal zone.
> >
> >> Do I miss a (new ?) kernel config ?
> >
> > Output of "sensors" in both cases would help. Also make sure that your
> > new kernel still has CONFIG_SENSORS_CORETEMP enabled, and that the
> > coretemp driver is loaded if modular.
> >
>
> $ zgrep CONFIG_SENSORS_CORETEMP /proc/config.gz
> CONFIG_SENSORS_CORETEMP=m
>
> Ah thx - a "modprobe coretemp" helps a lot - is this new ?
>
> Now I do have the expected picture :
>
> # sensors
> acpitz-virtual-0
> Adapter: Virtual device
> temp1: +51.0°C (crit = +98.0°C)
>
> thinkpad-isa-0000
> Adapter: ISA adapter
> fan1: 3120 RPM
>
> coretemp-isa-0000
> Adapter: ISA adapter
> Physical id 0: +58.0°C (high = +86.0°C, crit = +100.0°C)
> Core 0: +58.0°C (high = +86.0°C, crit = +100.0°C)
> Core 1: +56.0°C (high = +86.0°C, crit = +100.0°C)
>
>
> Why is that module not auto loaded ? Hhm ?
>
It never was. Maybe your relase update replaced /etc/modules.
Guenter
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next prev parent reply other threads:[~2013-08-22 16:13 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-11 8:46 [lm-sensors] why does # of temperature sensors decrease in 3.11 (thinkfan config related) Toralf Förster
2013-08-11 15:21 ` Guenter Roeck
2013-08-22 7:32 ` Jean Delvare
2013-08-22 16:09 ` Toralf Förster
2013-08-22 16:13 ` Guenter Roeck [this message]
2013-08-22 16:26 ` Toralf Förster
2013-08-23 8:01 ` Jean Delvare
2013-08-23 9:53 ` Jean Delvare
2013-08-23 11:28 ` Guenter Roeck
2013-08-24 21:19 ` Jean Delvare
2013-08-25 1:54 ` Rafael J. Wysocki
2013-08-25 11:59 ` Jean Delvare
2013-08-25 14:16 ` Toralf Förster
2013-08-25 19:50 ` Rafael J. Wysocki
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