[ltp] Re: tpfand configuration for an X200s

[Christoph Bier]

Erik Olsson schrieb am 11.12.2008 15:26:

> We are a group of new Thinkpad X200 owners that have the same fan problem as
> described.
> 
> After doing some research, we found out that by disabling the Ericsson WWAN
> card on our machines before starting X the fan problem goes away.

> Here is the procedure, complete with interesting output from dmesg :-)
> 
> 1. Start machine, don't start the X server.
> 2. As root, echo disable > /proc/acpi/ibm/wan
> (dmesg output: ehci_hcd 0000:00:1d.7: dma_pool_free buffer-2048
> ffff880077c46000/77c46000 (bad dma))
> 3. Start X server.

Doesn't help here with an X200s.

chris@skull-tp:~$ cat /proc/acpi/ibm/wan
status:		disabled
commands:	enable, disable

Output of sensors:

acpitz-virtual-0
Adapter: Virtual device
temp1:       +40.0°C  (crit = +127.0°C)
temp2:       +38.0°C  (crit = +104.0°C)

thinkpad-isa-0000
Adapter: ISA adapter
fan1:       2359 RPM
temp1:       +40.0°C
temp2:       +49.0°C
temp4:       +38.0°C
temp9:       +39.0°C
temp10:      +44.0°C

But there's no bad dma message:

chris@skull-tp:~$ dmesg | grep dma
chris@skull-tp:~$

[...]

Best
Christoph
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