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[SOLVED] CPU Fan Speed, CPU is overheating

Posted: Tue Jul 05, 2016 7:32 pm
by Spendoza
Hi folks
I'm running Linux Mint 17.1 and with the rising summer temps, my CPU is getting warmer too. I notice my fan isn't going at full speed, seems to be hovering around 85 degrees and 800RPM.
I have purchased a superior heatsink/fan unit for my cpu, but while I wait for it to arrive, how do I set my CPU fan speed to MAX (or maybe 90%)?
lm-sensors is not working for me, as I apparently have no pwm-capable sensor modules.
I just want to crank up my cpu fan speed until my new fan system arrives!
Thank you for any assistance you can give.

UPDATE The old CPU cooling system was a cheapo $15 3-pin fan and aluminum heat sink. Upgraded to 4-pin CoolMaster Hyper212 Evo (see last post). Never again will I cheap out on cooling systems. Lesson learned.

Re: CPU Fan Speed

Posted: Tue Jul 05, 2016 8:04 pm
by Spendoza
And the computer shut itself down due to overheating cpu with the fan running at 800 rpm the whole time.
I noticed while monitoring with xsenspors that when the fan was running at 1300+rpm the temp was around 60-65 degrees, but for no apparent reason the speed dropped to 800 and stayed there as the cpu got hotter and hotter...
Any ideas how to diagnose and fix this problem?

Re: CPU Fan Speed, CPU is overheating

Posted: Tue Jul 05, 2016 8:25 pm
by trytip
i'm assuming you ran sudo sensors-detect for sensors to start? did you actually open up the case and dust it out? is there a bios setting for your fan?

Re: CPU Fan Speed

Posted: Tue Jul 05, 2016 9:59 pm
by Arch_Enemy
Spendoza wrote:And the computer shut itself down due to overheating cpu with the fan running at 800 rpm the whole time.
I noticed while monitoring with xsenspors that when the fan was running at 1300+rpm the temp was around 60-65 degrees, but for no apparent reason the speed dropped to 800 and stayed there as the cpu got hotter and hotter...
Any ideas how to diagnose and fix this problem?
I wound up buying a new motherboard. That was a few years ago, it was a Biostar that ran fine for a long time, but then one year as soon as the outside temp would get >85F it would shut down, even in an air conditioned room!

I got a bigger heatsink and used some fresh shin etsu paste, and then it would wait for 90 degrees to shut down. :(

New Gigabyte Mobo solved the problem. It's still running, and that was 6 years ago.

Hint...if you know this, ignore: don't slather the paste on. To a certain extent, thinner is often better.

Re: CPU Fan Speed, CPU is overheating

Posted: Tue Jul 05, 2016 11:53 pm
by Spendoza
trytip wrote:i'm assuming you ran sudo sensors-detect for sensors to start?
Yes, I cannot remember the exact wording, but the only thing it detected was it87. When I tried to run any fancontrol programs, it gave me the old Error: Can't read configuration file.
did you actually open up the case and dust it out?
Oh yeah, that's one thing I'm always on top of. Have a huge fan sucking air in and a few sucking air out too, lots of airflow.
is there a bios setting for your fan?
Yeah, the Cool'n'Quiet thing the Asus mobos use, it's set to go to max speed at 60 degrees

Arch_Enemy, you're probably right, I just can't afford a new mobo for a few weeks yet.
I'm just glad I have my Raspberry Pi, can still watch shows while i figure this cpu temp thing out.

Re: CPU Fan Speed, CPU is overheating

Posted: Wed Jul 06, 2016 1:18 am
by trytip
reset your bios to default and check the fan speed in bios. could be bad wires unplug the cpu fan then plug it in.

Re: CPU Fan Speed, CPU is overheating

Posted: Wed Jul 06, 2016 6:08 pm
by Spendoza
trytip wrote:reset your bios to default and check the fan speed in bios. could be bad wires unplug the cpu fan then plug it in.
No change, still runs at ~800rpm. It might be bad wires on the cpu fan, I guess we'll find out when my new fan arrives in a few days. Heck, if I end up needing a new mobo, might upgrade to 18!
Edit: I should probably also mention my mobo is approximately 5 years old, it owes me nothing, I'm just incredibly cheap.

Re: CPU Fan Speed, CPU is overheating

Posted: Wed Jul 06, 2016 6:25 pm
by trytip
no shame in that my tower is 10 years old, recently changed thermal paste in my cpu and gpu. i don't spend too much time on my new laptop. i regularly recode videos in handbrake for at least 4 years and my cpu fan is at 3500RPM for hours, hasn't failed me yet. maybe turn off cool n' quiet see what happens ... good luck

Re: CPU Fan Speed, CPU is overheating

Posted: Wed Jul 06, 2016 10:48 pm
by Arch_Enemy
Spendoza wrote:
trytip wrote:reset your bios to default and check the fan speed in bios. could be bad wires unplug the cpu fan then plug it in.
No change, still runs at ~800rpm. It might be bad wires on the cpu fan, I guess we'll find out when my new fan arrives in a few days. Heck, if I end up needing a new mobo, might upgrade to 18!
Edit: I should probably also mention my mobo is approximately 5 years old, it owes me nothing, I'm just incredibly cheap.
Yeah...me too....

The only reason the other system is a test mule is because about 4-5 years ago when I was a Dell Rep I walked into one place and they were decommissioning a server, and the guy looks at me and says, "You want a quad core Xeon?" (~i960...?) Let's see...12M cache...yeah, why not? I was perfectly happy with my Gigabyte E63(?) OC'd to 3.5G, but when I went to look for Xeon MoBos... :shock: They were disappearing! I got an Intel for $160, and used a lot of other parts from other machines, and I just happened to luck out and have an nvidia 660GT monster fall in my lap from a guy who was sending back his Alienware and ordered it special. The Xeon is a 2.67GHz chip, but it has been running rock-steady at 4.2GHz since assembly. W00T!

Re: CPU Fan Speed, CPU is overheating

Posted: Thu Jul 07, 2016 4:52 pm
by Mute Ant
I just had to go through the clean-it repaste-it mister-sheen-service with a Dell 760 (an oldie from 2008) it turned out my "Thermal Event" shutdown was a flat 2032 button cell. That's not a bad life-span for a Lithium Cell; shame the BIOS got it wrong.

Re: CPU Fan Speed, CPU is overheating

Posted: Sat Jul 09, 2016 12:10 pm
by Spendoza
Image
CoolMaster Hyper212 Evo, $42 Canadian after tax and shipping, arrived yesterday morning from Amazon. (excuse the picture quality, used a Web based resizer, did the trick)
Sitting at a steady 37-41 degrees now. I'd call this Solved... At least until I can cobble together a new rig. :wink:

Re: CPU Fan Speed, CPU is overheating

Posted: Sat Jul 09, 2016 10:29 pm
by Arch_Enemy
Spendoza wrote:Image
CoolMaster Hyper212 Evo, $42 Canadian after tax and shipping, arrived yesterday morning from Amazon. (excuse the picture quality, used a Web based resizer, did the trick)
Sitting at a steady 37-41 degrees now. I'd call this Solved... At least until I can cobble together a new rig. :wink:
I don't think you could have done much better (that's what I have on my Xeon ;) )

The fan did go bad after 3 years, but you can fit another fan no problem. I'm overclocked by ~80% :shock: and it keeps it <60 degrees.

Re: [SOLVED] CPU Fan Speed, CPU is overheating

Posted: Sat Jul 09, 2016 11:24 pm
by don250r
I have that cooler on my i5-2500k, but with a fan on the other side as well in a push-pull configuration.
It helps for overclocking, especially under a heavy load like prime95.
100% on all 4 cores and still <70C

Re: [SOLVED] CPU Fan Speed, CPU is overheating

Posted: Sun Jul 10, 2016 9:53 am
by Arch_Enemy
don250r wrote:I have that cooler on my i5-2500k, but with a fan on the other side as well in a push-pull configuration.
It helps for overclocking, especially under a heavy load like prime95.
100% on all 4 cores and still <70C

Yes indeed! I put the other fan in the case, they matched right up. Works slick!