LinuxQuestions.org - How can I troubleshoot an unstable system?

- Linux - Software (https://www.linuxquestions.org/questions/linux-software-2/)

- - How can I troubleshoot an unstable system? (https://www.linuxquestions.org/questions/linux-software-2/how-can-i-troubleshoot-an-unstable-system-4175610628/)

How can I troubleshoot an unstable system?

I have had frequent crashes for a while now (didn't get around to fixing it) this is the first time I've dealt with an unstable system, how should I trouble shoot?

Logs does not have any clue?

dmesg | tail -n 20

any recent installation or changes?

What distro? version?

Quote:

Originally Posted by JJJCR (Post 5739979)

Logs does not have any clue?

dmesg | tail -n 20

any recent installation or changes?

What distro? version?

Here is the output of dmesg | tail -n 20

Code:

[  110.088195] cfg80211: Regulatory domain changed to country: AU

[  110.088196] cfg80211:  DFS Master region: ETSI

[  110.088196] cfg80211:  (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)

[  110.088198] cfg80211:  (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)

[  110.088199] cfg80211:  (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 1700 mBm), (N/A)

[  110.088200] cfg80211:  (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2400 mBm), (0 s)

[  110.088202] cfg80211:  (5490000 KHz - 5710000 KHz @ 160000 KHz), (N/A, 2400 mBm), (0 s)

[  110.088203] cfg80211:  (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 3000 mBm), (N/A)

[  110.122886] wlp8s0: Limiting TX power to 36 (36 - 0) dBm as advertised by 12:13:31:6f:0e:1b

[  111.195063] usb 3-2: 1:1: cannot set freq 44100 to ep 0x81

[  111.558424] Bluetooth: RFCOMM TTY layer initialized

[  111.558429] Bluetooth: RFCOMM socket layer initialized

[  111.558433] Bluetooth: RFCOMM ver 1.11

[  330.496291] do_trap: 42 callbacks suppressed

[  330.496296] traps: chrome[3466] trap invalid opcode ip:562a7e604ca0 sp:7ffc253792c0 error:0 in chrome[562a79189000+6ce3000]

[  734.580237] usb 1-4: USB disconnect, device number 2

[  734.580781] option1 ttyUSB0: GSM modem (1-port) converter now disconnected from ttyUSB0

[  734.580830] option 1-4:1.0: device disconnected

[  734.581253] option1 ttyUSB1: GSM modem (1-port) converter now disconnected from ttyUSB1

[  734.581296] option 1-4:1.1: device disconnected

Is there any particular log files i should be looking at? As there are an absolute ton of them and (atleast the sys log is) increadibly long.
I have Ubuntu 16.04 with a cinnamon DE (i also notice Cinnamon crashes more than it probably should, though this is less of a problem as I can simply restart it)
I was installing quite a lot of software when this problem started, so I'm not really sure which one it is, would this be limited to programs that run 24/7 or can any program cause instability? Also about when this started is when i started to auto-mount my Windows partition, could that be the problem?

You might find a message posted in root's mail box — view with the command
sudo less /var/mail/root

Also, look at
http://www.linuxquestions.org/questi...re-4175461588/

What is the distro/version? This is significant because not all distros use the same names for log files. For example, the traditional /var/log/messages on some systems is /var/log/syslog. Generally, /var/log/messages is the first place I would look.

More detail would also be helpful:

What exactly do you mean by "crash"? Freeze, power off, drop to command line, or something else? (If it's unexpected shutdowns, check that your cooling vents are free of dust and that the CPU is free of dust. Overheating is the most common cause of sudden shutdowns.)

What programs are you running when this happens and does there appear to be a pattern (for example, crashes only when you are using the browser, crashes when you are checking for mail).

What error messages, if any, display?

A web search for troubleshoot linux crash will turn up a number of articles and tutorials.