| === alexb is now known as alexboly | ||
| === alexb is now known as alexboly | ||
| alexboly | hi! I have a weird issue with Ubuntu 22.04 on my laptop. The GUI freezes randomly, with the mouse cursor still active. I can't restart the gnome session, can't restart X with ctrl-alt-backspace (I activated it), I can't switch to another session. Where to start reporting the bug? | 11:20 |
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| alexboly | also, I couldn't find anything useful in journalctl | 11:21 |
| guiverc | if the mouse still moves; to me the GUI is still functioning. I'd likely `ubuntu-bug gnome-shell` ; ie. report against GNOME-Shell itself... Does it recover? | 11:23 |
| alexboly | it doesn't recover by itself, I have to power down from the button and restart | 11:23 |
| alexboly | I can't run any command when this happens, or at least I don't see anything changing | 11:24 |
| alexboly | I tried alt+f2 -> r to restart gnome but it didn't work | 11:24 |
| guiverc | If mouse moves; kernel is still up thus SysRq commands could be given direct to kernel (ie. they work even with a STUCK GUI & no mouse movement; also confirm it's not kernel panic as that's when SysRq commands won't work) | 11:25 |
| guiverc | If you can switch to text terminal ; you can also safe shutdown/reboot & not unclean/unsafe shutdown with power button. | 11:25 |
| alexboly | where would I find a kernel panic in log files? does journalctl or dmesg show them? | 11:25 |
| guiverc | You can look for clues in /var/crash/ ; if a program crashes; you can find .crash files there; those can be submitted using `ubuntu-bug` | 11:26 |
| alexboly | ah, cool | 11:26 |
| alexboly | yeah, I can't switch to a terminal unfortunately because everything's frozen when this happens | 11:27 |
| guiverc | If the kernel panics; nothing exists -- that's the only time when power button should be used; but you'll get no mouse movement at all; nothing will work.. | 11:27 |
| alexboly | oh, I see, so gnome shell it is | 11:27 |
| alexboly | thank you | 11:27 |
| guiverc | Grab a phone or another device & search "magic sysrq" ... You'll find the wikipedia page on SysRq at or near top; it can remind you how to safely shutdown any Linux system (not just Ubuntu; but it needs a real keyboard thus not android phones etc) | 11:28 |
| alexboly | I know shutdown from command line :), if I can get to a terminal | 11:28 |
| alexboly | interesting, didn't know about magic sysrq, thank you for the tip | 11:29 |
| guiverc | SysRq REISUB is a safe shutdown; REISUO is the same for safe off (last B = boot; or O=OFF... wikipedia page I mentioned can remind you of keys if you forget) | 11:29 |
| === alexb is now known as alexboly | ||
| alexboly | just tested it, I know how to use it now | 11:40 |
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