Hi!

Just want to report a problem here.

Current system is Ubuntu 16.04 server virtual machine(KVM on OmniOS), latest 
LTSP from greek schools repo, fat clients: mo'bo': ASUS J1900I-C - mITX, 
chassi: Chieftec Compact Series IX-03B, 8 GB DDR3L

I been wining on this list about what I thought was a swap problem. Well, it 
wasn't.

The problem occurred right after I switched from UBU 14.04 to 16.04.

I got help to sort out ONE problem, the one with the metacity causing a reboot, 
but that wasn't my main problem. 

The main problem was that ONE of my clients were freezing after 1-2 hours. And 
only that client. I couldn't understand, and thought it was a hardware problem, 
I swapped everything, and I mean EVERYTHING, even mo'bo'.

Didn't help...of coarse swapped network cable and switch port as well, power 
bord and PSU. Nothing helped...

Then I started to check the bios, and found out that C-states was enabled in 
that client, and not in the others. It was also enabled in the new mo'bo' that 
I swapped to.

So, disabled C-states and the problem was gone.

Note that this was NOT a problem in 14.04, where the problematic client ran 
fine, with C-states enabled.

I don't know if this is for Ubuntu or LTSP, I just mention it here, so people 
that perhaps get the same problem should know.


Best regards from/Med vänliga hälsningar från

Johan Kragsterman

Capvert


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