After 12.04 install case fans never run.

icarus127 · 07-31-2012, 05:40 PM

So I installed Ubuntu 12.04 and now my case fans never run, even when booted into Windows 7. The only fans that ever come on are fans directly attached to a device (i.e. cpu/gpu/psu). Anything on a molex connector never spins up.
Has anyone seen this? I've tried reseting my bios to defaults but that didn't do anything. I guess grub is the only common denominator between Linux/Windows? My case fans used to come on the second I hit the power on, though, which is pre grub.

jk07 · 07-31-2012, 07:48 PM

Sounds to me like a hardware issue.

tommcd · 08-01-2012, 02:27 AM

Quote:

Originally Posted by icarus127

So I installed Ubuntu 12.04 and now my case fans never run, even when booted into Windows 7.
... I've tried reseting my bios to defaults but that didn't do anything.

Do the case fans run while you are in the BIOS?
If the case fans do not even run when you boot to the BIOS, then this is obviously not an OS or grub issue.
As jk07 said, you should then rule out a hardware issue here.

JimmyLinux · 08-06-2012, 03:07 PM

I would say that your issue is a hardware issue, not software. I would say that either your fans are dead, you have a problem in the wiring, or there's an issue with the power supply unit.