Comment 135 for bug 370173

m4cph1sto:
My fan spins in circles derp derp.

I sped up the fan and the problem went away. Can you tell me why would that
happen?

On Thu, Jun 18, 2009 at 10:56 AM, m4cph1sto <email address hidden> wrote:

> I'll add my 2 cents. My laptop, Pentium M 2.0 GHz, is experiencing CPU
> temps 10-20 degrees C hotter in Jaunty than in Intrepid. My fan is
> running properly, and actually more in Jaunty because of the higher
> temperatures. In Intrepid the fan would remain on low or off most of
> the time, with temps 35-40 idle, but with Jaunty the fan runs on medium
> or high constantly, with temps 45+ when idle.
>
> The laptop is not overheating and shutting down, but it is definitely
> running hotter. So there are two separate issues at play: some people
> are not getting proper fan control. Others have proper fan control, but
> for a currently-unknown reason are experiencing higher CPU temps in
> Jaunty, in many cases leading to shutdowns even with the fan running on
> max.
>
> In Intrepid my CPU temp never went over 69 C, whereas in Jaunty it
> regularly shoots up to 79 C. I luck out because my fan prevents it from
> going so high to initiate a shutdown. There are enough people working
> on debugging and I don't have time to install/test multiple kernels. My
> point is that this bug should be tackled as two issues: (1) fan
> problems, and (2) something unknown in Jaunty that is causing higher CPU
> temps separate from fan issues.
>
> --
> Ubuntu 9.04 laptop overheat and shutdown
> https://bugs.launchpad.net/bugs/370173
> You received this bug notification because you are a direct subscriber
> of a duplicate bug.
>
> Status in “linux” source package in Ubuntu: In Progress
>
> Bug description:
> Ubuntu 9.04, fresh install on Acer Aspire 5005.
> Not sure about package, but it seems the problem is with CPU frequency
> adjustment or fan control.
> Laptop shuts down right in the middle of CPU-greedy operation overheated. I
> haven't seen it before (since 7.10).
> The issue is discussed at several forums (eg.
> http://ubuntuforums.org/showthread.php?t=1130450)
>
> ----
> *-cpu
> product: AMD Turion(tm) 64 Mobile Technology ML-37
> vendor: Advanced Micro Devices [AMD]
> physical id: 1
> bus info: cpu@0
> version: 15.4.2
> size: 2GHz
> capacity: 2GHz
> width: 64 bits
> capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8
> apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 syscall nx
> mmxext fxsr_opt x86-64 3dnowext 3dnow up pni lahf_lm cpufreq
>