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My fan on my asus m2400 laptop keeps running at full speed no matter what i am doing on my computer. It seems a bit overkill when the computer is doing nothing.
Can someone please tell me howto stop the fan from runnning at full speed all the time. In my Grub menu file i have acpi=off otherwise my computer hangs at bootup
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The only reason that I can see that your fans are running at full speed is because your laptop's CPU is getting hott, and if it's running at full speed alllll the time ... then that means that some app is hogging your CPU.
When you start up next time and your fans are going crazy again open of a terminal window and type in the command ' top ' with out the ' ' . It should look something like this,
Tasks: 75 total, 1 running, 73 sleeping, 0 stopped, 1 zombie
Cpu(s): 3.4% us, 0.6% sy, 0.0% ni, 93.3% id, 0.2% wa, 1.0% hi, 1.4% si
Mem: 512632k total, 483292k used, 29340k free, 63400k buffers
Swap: 497968k total, 32k used, 497936k free, 280580k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
27191 zero 16 0 96556 32m 19m S 2.0 6.4 0:39.85 firefox-bin
1 root 16 0 1388 504 444 S 0.0 0.1 0:01.01 init
2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 0:00.14 ksoftirqd/0
4 root 5 -10 0 0 0 S 0.0 0.0 0:00.29 events/0
5 root 5 -10 0 0 0 S 0.0 0.0 0:00.01 khelper
17 root 5 -10 0 0 0 S 0.0 0.0 0:00.35 kacpid
108 root 5 -10 0 0 0 S 0.0 0.0 0:00.43 kblockd/0
171 root 15 0 0 0 0 S 0.0 0.0 0:00.02 pdflush
174 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
173 root 16 0 0 0 0 S 0.0 0.0 0:01.18 kswapd0
175 root 25 0 0 0 0 S 0.0 0.0 0:00.00 jfsIO
176 root 25 0 0 0 0 S 0.0 0.0 0:00.00 jfsCommit
177 root 25 0 0 0 0 S 0.0 0.0 0:00.00 jfsSync
178 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 xfslogd/0
179 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 xfsdatad/0
180 root 15 0 0 0 0 S 0.0 0.0 0:00.01 xfsbufdthis might look really messed up due to the window size or w/e, but look at the top program and look at how much % of CPU it has, as you can see on mine for example it's firefox-bin which is the firefox browser and it's taking up 2% of my cpu mem.
What I am thinking when you run ' top ' on your computer there is going to be an app that is hoggin the memory. So look at the PID and kill the process and see if that helps bring down your fans to a normal level.
-Luis
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My fan on my asus m2400 laptop keeps running at full speed no matter what i am doing on my computer. It seems a bit overkill when the computer is doing nothing.
you are running the laptop on "performance", which is activated in bios, which means "fixed max mhz". therefore your cpu runs at full speed all the time, which in turn means that the fan must be turned on all the time to prevent your cpu from cooking up. switch to "powersave" in bios to run at "fixed low mhz" or use the kernel governours+speedfreq_* to use speedstepping (which is the better solution)
Can someone please tell me howto stop the fan from runnning at full speed all the time. In my Grub menu file i have acpi=off otherwise my computer hangs at bootup
you have to use acpi because asus is legacy-free, which means, no apm whatsoever. to use powermanagement features like the S? states etc. acpi must be enabled.
please investigate *why* and *where* acpi hangs on boot-time. try a newer kernel (2.6.9+) and/or a new acpi snapshot. maybe your problem is fixed already. nevertheless, you have to compile your own kernel...
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