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CPU Fan stuck on 4218 rpm

ipb_uk
Aspirant

CPU Fan stuck on 4218 rpm

Hi,

 

The CPU of my Pro RNDP6000 is stuck on 4218 rpm. The box is on 6.9.0. The cpu temp is 47. The  fan starts off slow at around1500rpm and works its way up 4218 rpm after about 10 minutes and stays there, all day. It's always 4218rpm. I've tried it with the side off, still does it.

The system temp is 45 with 852 rpm, the 6 disks are between 38-40.

 

It's been like this for a few months. I've tried the three setting, still does it.

 

Any idea whats going on?

Model: ReadyNAS RNDP6000v2|ReadyNAS Pro 6 Chassis only
Message 1 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

Sorry for you to hear this, but happy you are sharing this.

I'm still running my PRO 6 on 6.5.0 (my best fan behaviour experience since I bought it 5 years ago) and will avoid 6.9.0. based on your message.

 

Needless to say that I hope for you that your problem gets fixed. 

Message 2 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

Hi,

 

Nothing to do with 6.9.0 because as stated it's been like this for months.

 

Regards Ian.

Message 3 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

Do you know if your CPU fan is of the three-pin variety connected to the I/O board or 4-pin variety connected to the motherboard?  Another user reported a similar problem and he got it fixed by making changes in the system.conf file, though he had just changed from 4.3.x to 6.x.  Did it happen at some OS update?  Somewhere along the line in 6.x, Netgear may have left out the configuration for the 3-pin fan in the 6-bay Pro models.  I frankly have no idea how it could tell which it is, so maybe that process just fails sometimes during an update.

 

Take a look here: CPU-fan-stuck-on-full-speed-on-upgraded-x86-OS6-pro-business

Message 4 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

Hi,

 

It's the four pin to the  motherboard.

 

Message 5 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

OK, so SSH into the NAS and look at /etc/sensor.d and see if i you have both a system.conf and a pro6-fan.conf.

pro6-fan.conf should look like this:

chip "w83627dhg-*"
        ignore fan3

And system.conf like this:

chip "w83627dhg-isa-*"
        label in1 "DDB18"
        set in1_min 1.62
        set in1_max 1.98
        label in2 "AVCC"
        set in2_min 3.3 * 0.90
        set in2_max 3.3 * 1.10
        label in3 VCC3
        set in3_min 3.3 * 0.90
        set in3_max 3.3 * 1.10
        label in4 VCC1_25
        set in4_min 1.17
        set in4_max 1.32
        label in5 "VCC1_5"
        set in5_min 1.41
        set in5_max 1.58
        label in6 "VCC1_05"
        set in6_min 0.98
        set in6_max 1.10
        set in7_min 3.3 * 0.90
        set in7_max 3.3 * 1.10
        set in8_min 3.0 * 0.90
        set in8_max 3.3 * 1.10
        label fan1 "System"
        set fan1_min 600
        label fan2 "CPU"
        set fan2_min 150
        label fan3 "System"
        set fan3_min 600
        ignore fan4
        ignore fan5
        label temp1 "System"
        set temp1_max 80
        ignore temp2
        ignore temp3
        ignore cpu0_vid
        ignore intrusion0

system.conf is actually just a link to etc/frontview/sensors/NV6.conf.

 

 

 

 

I'd say your fan or the fan controller was broken, but that would normally make it start out full on, not ramp up.

Message 6 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

Hi,

 

Ok went to /etc/sensors.d all is the same.

 

Message 7 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

Try unpluging just the blue wire and see what happens.  I would expect the fan to come on full blast right away with the PWM line disconnected.  If it still ramps up, then either the fan controller or that fan is bad, and it's worth trying another fan.  I don't really expcet this to be it, but I don't know what else it could be.

Message 8 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

Ok Thanks, I'll give that a go.

I left the side off today and it was a few hours before it went over 1600 all the way to 4218 and now sits at 3515 & 4218 rpm alternating between those two speeds. The temp ranges from 46-52.

Message 9 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

What does the temperature do as the NAS ramps up the fan speed?  If it's doing nothing, or gets even higher, have you verified that you don't have a clogged CPU heat sink?  Or maybe the CPU temp sensor is the issue.  While your temperature is nowhere near the danger zone, it's probably high enough that the NAS will try to bring it down by bumping up the fan speed.  If each bump has no effect, it'll probably just keep bumping to max. 

Message 10 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

I've tried the blue wire and yes it starts a full speed.

Heat is clean, I made sure of that first.

 I've put the wire back on and it now reads 1406rpm & 38c. Sys reads 1406 & 53c, hards 38-40c. And i've the side back on too.

Message 11 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

It took 45 mins to kick in. Watched to see what if anything started and it looks like the file search (usr/lib/tracker/tracker-miner-fs) kicks in about the same time. Disabelled it and the fan speed went back to normal with in about 30 seconds.

 

I keep file search in the off position.

Message 12 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

I can see the file search using enough CPU to elevate the temperture some, but it's not going to recover in 30 sec.  So there must be something wrong in the way the file search is implemented.  It looks like it could be a case of double use of a system variable, but I don't see one that would be involved.  Maybe double use of a database entry?

 

Since most (all?) current NASes don't have a CPU fan and the legacy systems aren't officially supported, I can see how something like that could go untested.  I don't have file search enabled, and it's now clear it's not a hardware issue, so I'm out of answers.  Time for one of the Netgear programmers to chime in.

Message 13 of 22
ipb_uk
Aspirant

Re: CPU Fan stuck on 4218 rpm

HI,

 

Thought I'd best time it, just in case my quess at 30 seconds was wildly out.

28 seconds and you can hear the fan slowing down and after 2 1/2 minutes it's in audible at 1900rpm.

I then enabled it again. It took 2 minutes to start increasing speed and by 3' 10'' was at 3013, 3' 40'' 3515 and 4' 4'' at 4218.

 

I then broke for lunch.

And 1/2 hour later I then turned off indexing and at 34 seconds you could hear the fan slowing down, and after 1 1/2 minutes was down to 3013 and settled down to 1917.

 

 

Message 14 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

Is the pro6-service-action_1.0_amd64 add-on to be used with all post OS 6.8.x firmware version on the PRO 6 in order to have the correct fan behaviour?

Message 15 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

My Pro6's (with the 4-pin CPU fan connected to the motherboard) are running 6.8.1 with no fan issues, and I have never even heard of pro6-service-action_1.0_amd64.

Message 16 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

Message 17 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

OK, so that is only for units that have the three-pin fan connected ot the IO card instead of the 4-pin one connected to the motherboard.  I do note that the patch is no longer reachable.

Message 18 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

OK. Thanks for your explanation.

 

Not sure which version I have. I did have fan issues in the past which is why I stayed on OS 6.5.0.

 

I downloaded a copy yesterday just in case I want to upgrade one day. You're right though that the link no longer works.

Message 19 of 22
Sandshark
Sensei

Re: CPU Fan stuck on 4218 rpm

Since you are well out of warranty, just remove the side panel with the vent holes and take a look.

Message 20 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

I will... although after end of Jan '18 when the 5 year warranty expires 🙂

Message 21 of 22
Supertramp11
Luminary

Re: CPU Fan stuck on 4218 rpm

For those interested, the patch can be downloaded again.

Message 22 of 22
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