On Fri, Mar 15, 2019 at 12:41:00PM +0100, Thomas Müller wrote: > > What .config do you have? > The one packaged by Fedora. I've attached the one for 4.20.15 as reference.
Thanks, I'll have a poke, see what, if anything, is different from the kernels I ran. > > And what, if anything do you see on the > > console when it goes funny? > Nothing unfortunately. > When trying to suspend the display immediately goes blank, the system becomes > unresponsive and the > status LED within the power button start flashing rapidly (just like it does > when the power cord is > attached). > > > > I think you wrote that hot-un-plug never completes? Is there anything in > > dmesg when it's stuck in: > > > > echo 0 > /sys/devices/system/cpu/cpu1/online > > > > ? > I've just tried that again and the system immediately froze. Hmm, I tought you said the system remained semi usable, just that reboot stopped working thereafter and it needed a power cycle. > `journalctl -f` was running in a second window but it had no chance to output > anything... :/ Ah, you're using a GUI! Stop doing that ;-) See if you can use the VGA console; not a FB console or a DRM console, but the real ancient, proper text mode, VGA console. Now, don't ask me how to do that, because I don't know, I've been running on pure serial console output for the past 10 years or so, heck I don't even have systemd. And you might have to do something like: dmesg -n8, to get the console to print the kernel messages or something.
