I have a Dell 7373, with a
Intel(R) Core(TM) i7-8550U CPU @ 1.80GHz. I'm running a fairly stock version of xubuntu 18.04, kernel 4.15.0-33-generic. (It's the latest kernel I got from an
For a few weeks now, once every few days my computer will lock up. The circumstances are always the same: it is on, plugged in, and either the lid is closed (which only turns off the screen but does not sleep or hibernate), or the screen has timed out (again, sleep and hibernate not enabled). Also it only seems to happen when I've been away from the computer for more than a half-hour or so. But it doesn't always happen.
*Edit: I now believe that this is a BIOS/firmware issue, and it seems to be temporary freezes, not permanent. Today I tried to wake my laptop from suspend. The power light came on immediately, as did the keyboard backlight. But the screen remained black. Also, the caps lock light would not respond when pressing that key.
I waited about 13.5 minutes, and the system finally came up, perfectly normal. The power light came on at about 09:13, and the system finally woke up around 09:25.
journalctl showed no activity until the actual wake-up. That and the caps lock makes me think it's firmware. I haven't been able to find any "logs" in the BIOS screens.
Aug 10 21:35:17 user-Inspiron-7373 kernel: PM: suspend entry (deep) Aug 10 21:35:17 user-Inspiron-7373 kernel: PM: Syncing filesystems ... done. Aug 11 09:25:04 user-Inspiron-7373 kernel: Freezing user space processes ... (elapsed 0.001 seconds) done.
Things I've tried:
ctrl+alt+f1(and all other f-keys too) to see if I can switch to a terminal. No dice.
ssh. After the first few times I installed an ssh server, and tried connecting from another computer. Again no dice.
- syslog, kern.log, journalctl. Nothing in any of these that seems to shed any light.
For example, it happened today. I had closed the lid several times and left the computer. The first 3 or 4 times it was fine. But the last time I closed the lid at 16:19:32. Then came back to the computer sometime around 17:45 and found it completely locked up. Here's what I found in journalctl:
Sep 09 16:19:32 user-Inspiron-7373 systemd-logind: Lid closed. -- Reboot -- Sep 09 17:46:16 user-Inspiron-7373 kernel: Linux version 4.15.0-33-generic (buildd@lcy01-amd64-024) (gcc version 7.3. Sep 09 17:46:16 user-Inspiron-7373 kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.15.0-33-generic root=UUID=5276f0f
And that's the most information I can find anyplace. Literally nothing showing between the time I closed the lid (when everything was fine) and after I had to do a force-reboot.
What else can I check to try to diagnose this?