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#1 2010-02-08 21:43:21

PierreR
Member
Registered: 2008-11-10
Posts: 58

Fan stops working, PC is warming up dangerously.

Hello,

When it happens, sensors indicates a temperature of 0°C for every CPU. The fan stops working and the PC is getting hot. At that point, it seems safer to shutdown the computer ... If I restart it reboots normally and the fan is on, sensors indicates above 50°C ... This seems to happen after several log in/out of different users.

I have just updated the PC and I now use "xf86-video-ati" instead of "catalyst". I have always been annoyed by xf86-video-ati because the fan is mostly always on when I use this driver (maybe there is a setting I should change somewhere)

Any idea what could go wrong ? (Dell XPS Studio with a Radeon HD 4670)

Thanks

Last edited by PierreR (2010-02-08 21:44:43)

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#2 2010-02-19 14:22:15

b9anders
Member
Registered: 2007-11-07
Posts: 691

Re: Fan stops working, PC is warming up dangerously.

I have this sometimes on my lenovo. I think I've connected my problem to too much moisture.

The solution for me is the standard operation procedure. Strike a good punch at the fan area and it starts up again.

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#3 2010-02-19 14:50:27

vacant
Member
From: downstairs
Registered: 2004-11-05
Posts: 816

Re: Fan stops working, PC is warming up dangerously.

I have HD3200 graphics in my laptop and ati runs around 6C hotter than fglrx.

What does "acpi -ti" show before and after the temp indicates 0C?

I can also do

$ cat /proc/acpi/thermal_zone/CPUZ/*
<setting not supported>
polling frequency:       3 seconds
state:                   ok
temperature:             48 C
critical (S5):           105 C
passive:                 100 C: tc1=1 tc2=2 tsp=100 devices=CPU0 CPU1 
active[0]:               85 C: devices=FAN0 
active[1]:               70 C: devices=FAN1 
active[2]:               62 C: devices=FAN2 
active[3]:               45 C: devices=FAN3

$ cat /proc/acpi/fan/FAN*/state
status:                  off
status:                  off
status:                  off
status:                  on

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