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#1 2017-08-18 01:31:30

yochaigal
Member
From: Boston
Registered: 2011-02-06
Posts: 202

SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

My X1 Carbon (4th Gen) laptop has been randomly freezing for the last two months; systemd journal shows nothing other than a sudden reboot when I have to hard shut it down. I have saved multiple journalctl logs for posterity. Basically, I'll be humming along (almost always using Chrome, Wavebox, Slack & Discord - yay memory-chomping electron apps) when suddenly, my cursor stops moving and the system becomes unresponsive. This does not seem to correlate to heavy usage, though - I've had it freeze with one Chrome tab open and nothing else running.

Re: KDE: I do not have the freeze-inducing Wallpaper Slideshow turned on (nor have I ever).

My specs:
Kernel: x86_64 Linux 4.12.7-2-ck-skylake
DE: KDE 5.37.0 / Plasma 5.10.4
WM: KWin
WM Theme: Breeze
CPU: Intel Core i5-6200U @ 4x 2.8GHz [55.0°C]
GPU: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
RAM: 3663MiB / 7409MiB

Where should I start looking?
Thanks

EDIT: went back to stock Kernel.

Last edited by yochaigal (2017-08-22 02:13:59)

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#2 2017-08-18 01:42:00

jasonwryan
Anarchist
From: .nz
Registered: 2009-05-09
Posts: 30,424
Website

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma


Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

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#3 2017-08-18 01:57:06

yochaigal
Member
From: Boston
Registered: 2011-02-06
Posts: 202

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

Are you suggesting I remove intel-ucode? I've always had it installed, even before the freeze. It appears to be the latest version, as well.

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#4 2017-08-18 01:59:17

jasonwryan
Anarchist
From: .nz
Registered: 2009-05-09
Posts: 30,424
Website

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

No, I was suggesting that you install it, and if it is already installed, check that it is loaded.

You should also try booting another kernel.


Arch + dwm   •   Mercurial repos  •   Surfraw

Registered Linux User #482438

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#5 2017-08-18 11:59:13

yochaigal
Member
From: Boston
Registered: 2011-02-06
Posts: 202

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

It is loaded already. I may try another kernel, though I'm not sure my issue is directly kernel related.
When it freezes, first everything slows down, then I lose touchpad control. This tells me that it is more likely a massive spike in CPU usage causing it.

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#6 2017-08-18 15:27:21

yochaigal
Member
From: Boston
Registered: 2011-02-06
Posts: 202

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

So, in possibly related news, the laptop is also freezing on wake from suspend. The logs again show nothing:

Aug 18 10:41:01 copernicus NetworkManager[631]: <warn>  [1503067261.7388] dispatcher: (27) 10-chrony failed (failed): Script '/etc/NetworkManager/dispatcher.d/10-chrony' exited with error status 1.
Aug 18 10:41:01 copernicus ksmserver[2000]: MapNotify: 20971536
Aug 18 10:41:01 copernicus systemd[1]: Reached target Sleep.
Aug 18 10:41:01 copernicus systemd[1]: Starting Suspend...
Aug 18 10:41:01 copernicus systemd-sleep[20578]: Suspending system...
-- Reboot --
Aug 18 11:15:13 copernicus kernel: microcode: microcode updated early to revision 0xba, date = 2017-04-09
Aug 18 11:15:13 copernicus kernel: Linux version 4.12.7-2-ck-skylake (squishy@ease) (gcc version 7.1.1 20170630 (GCC) ) #1 SMP PREEMPT Tue Aug 15 16:41:21 EDT 2017


I should mention, I am using linux-ck. Perhaps I will revert to standard...

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#7 2017-08-18 18:32:00

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 21,410

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

ck defaults to the new multi queue block mechanism which has a known bug in conjunction with at least BFQ that it can't wake from suspend. So a relation here is definitely not out of the question.

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#8 2017-08-22 02:13:10

yochaigal
Member
From: Boston
Registered: 2011-02-06
Posts: 202

Re: SOLVED: Freezing on X1 Carbon (4th Gen) + Plasma

Switching to default Kernel seems to have resolved all of my issues.
Thank you.

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