Make Linux recognize replacement CPU fan, instead of reporting it failed & now shutting PC down
by LenHoff from LinuxQuestions.org on (#5K2RD)
I'm using Mint 20.1 - Cinnamon.
The main reason for replacing the CPU fan is, one blade has a hairline crack. It's not flopping around, but I'm concerned about tempting fate. Cooling -wise, it's doing well for now.
I'm not sure if it could be repaired (reliably), and not be out of balance. Maybe doing the "same thing" to a blade opposite the repaired one.
I bought a replacement, "Arctic F8 PWM PST", (80 mm, 4 wire - just like old fan) at reputable, local repair & sales shop. I'm now wondering if the fan is a suitable replacement for a Quad Core CPU?
Some specs: https://www.amazon.com/ARCTIC-F8-PWM...002KTVFPI?th=1
Plugging it into the mobo "CPU Fan" 4 pin socket (only 4 pin fan socket on MOBO), boot up, immediately says, "CPU cooling fan failed. Shutting system down in 4 seconds." And it does.
I read a lot about using lm-sensors, "sensors-detect", PWM settings & lots of related info.
I know enough now to be dangerous.
1st issue is help deciding if the Arctic fan is a suitable replacement, spec - wise.
I can only find some specs on old fan, "Delta / Cooler Master AUB0812HV, 80mm, 4 pin (no other characters in the model #). I've seen specs it has MAX RPM around 3600. I haven't found the MIN RPMs anywhere. That may? be part of the problem. The Arctic may be defective - not sending / receiving data, or its current 300 RPMs are perceived as failing / failed.
Either installed or testing on workbench, the old fan's RPMs are much higher than the Arctic fan. I can only observe the relative speed of each fan - on a bench, applying 12V to -Blk & +Red wires. Arctic fan's specs are 300 - 2000 RPMs. On the bench or installed - for a FEW seconds before system shuts down, it spins VERY slowly (300 RPMs?) vs. the old fan.
Testing the old fan w/ 12V, it spins several times faster & according to "sensors" or Psensor, it starts at around either ~ 1650 or 1070 RPMs (depending on which Fan (1 or 2)is CPU fan. Only 2 show RPMs - assume the 2 plugged into mobo. Two other fans detected don't show RPMs. I'm "guessing" the 80 mm CPU fan would be the higher RPM vs, the other 120 mm case fan(s). The RPMs of the 2 don't vary much. Nothing I've seen in any files identify any of the fans.
When applying 12V to variable speed fans - to Blk & Red wires (or neg & pos, if all black wires), I don't know if the resulting speed is its MIN, MAX RPM (or something else). Seems clear, the Arctic has considerably lower (300) MIN RPM, and AFAIK, a lower (2000) MAX RPM than the old fan.
So, if I manage to find an 80mm PWM fan with RPM range closer to the old fan, would that greatly reduce / eliminate problems of replacing the CPU fan?
The main reason for replacing the CPU fan is, one blade has a hairline crack. It's not flopping around, but I'm concerned about tempting fate. Cooling -wise, it's doing well for now.
I'm not sure if it could be repaired (reliably), and not be out of balance. Maybe doing the "same thing" to a blade opposite the repaired one.
I bought a replacement, "Arctic F8 PWM PST", (80 mm, 4 wire - just like old fan) at reputable, local repair & sales shop. I'm now wondering if the fan is a suitable replacement for a Quad Core CPU?
Some specs: https://www.amazon.com/ARCTIC-F8-PWM...002KTVFPI?th=1
Plugging it into the mobo "CPU Fan" 4 pin socket (only 4 pin fan socket on MOBO), boot up, immediately says, "CPU cooling fan failed. Shutting system down in 4 seconds." And it does.
I read a lot about using lm-sensors, "sensors-detect", PWM settings & lots of related info.
I know enough now to be dangerous.
1st issue is help deciding if the Arctic fan is a suitable replacement, spec - wise.
I can only find some specs on old fan, "Delta / Cooler Master AUB0812HV, 80mm, 4 pin (no other characters in the model #). I've seen specs it has MAX RPM around 3600. I haven't found the MIN RPMs anywhere. That may? be part of the problem. The Arctic may be defective - not sending / receiving data, or its current 300 RPMs are perceived as failing / failed.
Either installed or testing on workbench, the old fan's RPMs are much higher than the Arctic fan. I can only observe the relative speed of each fan - on a bench, applying 12V to -Blk & +Red wires. Arctic fan's specs are 300 - 2000 RPMs. On the bench or installed - for a FEW seconds before system shuts down, it spins VERY slowly (300 RPMs?) vs. the old fan.
Testing the old fan w/ 12V, it spins several times faster & according to "sensors" or Psensor, it starts at around either ~ 1650 or 1070 RPMs (depending on which Fan (1 or 2)is CPU fan. Only 2 show RPMs - assume the 2 plugged into mobo. Two other fans detected don't show RPMs. I'm "guessing" the 80 mm CPU fan would be the higher RPM vs, the other 120 mm case fan(s). The RPMs of the 2 don't vary much. Nothing I've seen in any files identify any of the fans.
When applying 12V to variable speed fans - to Blk & Red wires (or neg & pos, if all black wires), I don't know if the resulting speed is its MIN, MAX RPM (or something else). Seems clear, the Arctic has considerably lower (300) MIN RPM, and AFAIK, a lower (2000) MAX RPM than the old fan.
So, if I manage to find an 80mm PWM fan with RPM range closer to the old fan, would that greatly reduce / eliminate problems of replacing the CPU fan?