20th February 2017, 4:34
Hi Rocky, & thanks.
Yes i also noticed that, & of course it worried me, but i'm out of my depth here wrt properly understanding & interpreting this re root cause & implications. Hence i did some research, searching for "NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s!", eg:
a. https://bugs.launchpad.net/ubuntu/+sourc...ug/1530405
b. https://ubuntuforums.org/showthread.php?t=2205211
c. https://bbs.archlinux.org/viewtopic.php?id=220414
d. https://bugs.launchpad.net/ubuntu/+sourc...ug/1441387
e. https://askubuntu.com/questions/875173/n...ymouthd305
...& this indicated:
1. I am not alone; LOTS of people have this problem.
2. Most reports seem for Ubuntu 16.04, but some predate it with 15.04, & even 14.04 (including many derivatives of all these).
3. A wide range of kernels are mentioned, from which i intuit that (a) all kernels are crap, or (b) more likely IMO the kernel is not the root cause[?]
4. No single specific user-software program is associated with these failures.
5. Other opinions [guesses?] on possible root causes span Nvidia GPU drivers, Nouveau GPU drivers [thus by inference cancelling each other out & implying All Is Lost, Return to Slide-rules], USB3 being enabled in BIOS, Hyperthreading being enabled/ not enabled in BIOS [sigh], systemd, PSU, bulging MoB capacitors, overclocking / not overclocking, moon-phases, wind-direction...
I wonder about a need/possibility of flashing a BIOS-update (if available], but the idea rather terrifies me as (a) i've never done that in Linux (it seems complicated], only in Windows in a previous Lappy (was simple & easy), (b) with my luck there'll be a power-blackout during the flashing, thus turning my Tower into a [pile of] brick[s], (c] at least one other report mentions that doing a BIOS upgrade did not fix the problem.
I have a growing feeling that i'm going to be stuck with these occasional, random, freezes, well into the future... For my equanimity, maybe i need to just adopt a Kubrickesque philosophy, viz: Dr. Strangelove Or: How I Learned To Stop Worrying And Love The Bomb.
Yes i also noticed that, & of course it worried me, but i'm out of my depth here wrt properly understanding & interpreting this re root cause & implications. Hence i did some research, searching for "NMI watchdog: BUG: soft lockup - CPU#2 stuck for 23s!", eg:
a. https://bugs.launchpad.net/ubuntu/+sourc...ug/1530405
b. https://ubuntuforums.org/showthread.php?t=2205211
c. https://bbs.archlinux.org/viewtopic.php?id=220414
d. https://bugs.launchpad.net/ubuntu/+sourc...ug/1441387
e. https://askubuntu.com/questions/875173/n...ymouthd305
...& this indicated:
1. I am not alone; LOTS of people have this problem.
2. Most reports seem for Ubuntu 16.04, but some predate it with 15.04, & even 14.04 (including many derivatives of all these).
3. A wide range of kernels are mentioned, from which i intuit that (a) all kernels are crap, or (b) more likely IMO the kernel is not the root cause[?]
4. No single specific user-software program is associated with these failures.
5. Other opinions [guesses?] on possible root causes span Nvidia GPU drivers, Nouveau GPU drivers [thus by inference cancelling each other out & implying All Is Lost, Return to Slide-rules], USB3 being enabled in BIOS, Hyperthreading being enabled/ not enabled in BIOS [sigh], systemd, PSU, bulging MoB capacitors, overclocking / not overclocking, moon-phases, wind-direction...
I wonder about a need/possibility of flashing a BIOS-update (if available], but the idea rather terrifies me as (a) i've never done that in Linux (it seems complicated], only in Windows in a previous Lappy (was simple & easy), (b) with my luck there'll be a power-blackout during the flashing, thus turning my Tower into a [pile of] brick[s], (c] at least one other report mentions that doing a BIOS upgrade did not fix the problem.
I have a growing feeling that i'm going to be stuck with these occasional, random, freezes, well into the future... For my equanimity, maybe i need to just adopt a Kubrickesque philosophy, viz: Dr. Strangelove Or: How I Learned To Stop Worrying And Love The Bomb.