I've installed latest Ubuntu 18.04.1 LTS about a week ago.
All the soft was installed via system menu or Jetbrains repo.
In 2 days appeared freezes - only mouse moves, irresponsive to keyboard, timer above the window don't tick. For several days it was 1 freeze a day in the evening, then 2 freezes in the evening, yesterday 5 freezes, today - 5 times.
I daily do update/upgrade.
My keyboard don't have SysReq button.
Ctrl+Alt+F2/F3 worked only once, once Ctrl+Alt+ScrollLock added somewhat in appeared console stream.
I googled around and find this post advising to get to
/etc/default/grub and changing the default line to
GRUB_CMDLINE_LINUX_DEFAULT="noacpi" and then running
Then i had my 5 freezes yesterday. Sometimes after crash Ubuntu asks for sending crash report, sometimes not.
My questions are:
- How to get to console and collect info/reason for a crash?
- Is it possible to recover from crash without reset or power down button?
- How to properly collect info/reason for a crash to send it to Ubuntu (preferably automatically)?
Should I change to another kernel in order to get stable system?
/var/crash$ ls -alt /var/crash total 25864 -rw-r----- 1 gdm whoopsie 19808573 ноя 29 09:38 _usr_bin_gnome-shell.121.crash drwxrwsrwt 2 root whoopsie 4096 ноя 29 09:27 . ---------- 1 gdm whoopsie 1810565 ноя 28 15:16 _usr_bin_Xwayland.121.crash -rw------- 1 whoopsie whoopsie 0 ноя 28 14:07 _usr_bin_gnome-shell.121.uploaded -rw-r--r-- 1 root whoopsie 0 ноя 28 14:04 _usr_bin_gnome-shell.121.upload -rw------- 1 whoopsie whoopsie 0 ноя 28 10:08 _usr_share_stacer_stacer.1000.uploaded -rw-rw-r-- 1 home-user whoopsie 0 ноя 28 10:05 _usr_share_stacer_stacer.1000.upload -rw-r----- 1 home-user whoopsie 4845874 ноя 28 10:05 _usr_share_stacer_stacer.1000.crash drwxr-xr-x 15 root root 4096 ноя 20 20:09 ..
/var/crash$ sudo ls -al ~/.local/share/gnome-shell/extensions [sudo] password for home-user: ls: cannot access '/home/home-user/.local/share/gnome-shell/extensions': No such file or directory
/var/crash$ free -h total used free shared buff/cache available Mem: 31G 3,1G 25G 118M 3,0G 27G Swap: 2,0G 0B 2,0G
Yes, memtest does appear in my GRUB menu. I'll give it a try tonight. Dual-boot Windows 7 don't show any problems so far.
Just have found quite similar issue with LibreOffice 5.1 / Ubuntu 16.04:
Turned off Java in my LibreOffice, OpenCL already off. No luck. 3 freezes in 2 hours. Last time touching LibreOffice after a pause freeze everything but mouse again. Installed NVidia driver v.340. Let' see.