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since Ubuntu kernel 3.13.0-59 (or possibly even -58) Lubuntu kernel panics on Acer Travelmate B115-M when the device is connected to AC, but not when it's starts with battery only.

Older kernels still work fine.

it seems to panic while setting cpu governor policy - I see there might be a connection, but I have no BIOS-options to change anything about the behaviour. I already asked Acer for BIOS Updates - didn't get any answer yet.

Do you have any hints? did you ever experience sth. similar? (And what did you do about it?) Is there something i could set or check?

Since there are 19 other identical devices out there which I'm responsible for and 3 are already affected, it's a bit worrying ...

mattiscb
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1 Answers1

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Kernel 3.13.0-59 seems to be buggy. There a number of reports, that installation of this kernel causes various problems.

Probably some backport was not very good.

I suggest switching to kernel 3.19 by running

sudo apt-get install linux-generic-lts-vivid
Pilot6
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  • I tried it on my example device and it worked here. I'm going to deploy it on the other affected machines and report back. Thanks a lot! – mattiscb Jul 28 '15 at 15:02
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    installed it on another 8 Machines and it works. Looks like 3.13.59 really is buggy and this bug isn't present in 3.19.0-25 anymore. thanks! – mattiscb Jul 29 '15 at 08:09
  • Now deployed on all 20 machines and no more problems so far. – mattiscb Aug 05 '15 at 09:13