CPU overheating when using SSD in DVD bay with a caddy, kworker using 20%cpu

I am using a dell laptop, CPU i7, GPU NVIDIA, RAM 8GB.

I bought an ssd and put it in a caddy and put in the dvd bay. Then I installed ubuntu-gnome 16.04 onto this ssd. This ssd is the second drive on the system, the primary hdd is still there.

I can see that there is a kworker process which is consistently using 20% of cpu even when system is idle. Normally system uses only 1% of cpu when idle.

Searching internet for this issue, I found this thread Kworker, what is it and why is it hogging so much CPU? which suggests to do

echo 1 > /proc/sysrq-trigger

and then check

dmesg

where I can see the following..

[ 19.363697] vgaarb: this pci device is not a vga device
[ 25.172294] vgaarb: this pci device is not a vga device

Interestingly, the system is able to boot from the ssd and in general is working fine other than the kworker hogging cpu and heating much more (~70°C) than normal (~40°C).

So, how do I configure the system to use the ssd properly? I do not want my poor cpu to be overworking all the time and heating up.

Any suggestions will be appreciated. I can provide any info/logs that you guys require.

1 Answer

Please read this article. Load average is high after adding second drive

I solved my problem just by switching the button (like this on the pic)