Grant Edwards wrote: > On 2025-01-25, Dale <rdalek1...@gmail.com> wrote: >> Grant Edwards wrote: >>> On 2025-01-25, Grant Edwards <grant.b.edwa...@gmail.com> wrote: >>>> Starting about a week ago, my AMD system (AMD Ryzen 5 3400G with >>>> Radeon Vega Graphics) has been freezing up multiple times per day -- >>>> always when in active use with X11. Before that, it had been reliable >>>> since assembled (about 5 years ago). >>>> >>>> Ctrl-Alt-Backspace does nothing >>>> Ctrl-Alt-F1 does nothing >> I've accidentally seen this ages ago and this may not be there anymore. >> Isn't there some sort of output sent to ctrl alt F12? If so, that may >> shed some sort of light. I think it is the same as messages or >> something. I saw it once when scrolling through the consoles looking >> for something else. I'm not real sure what I saw but looked like kernel >> something. > None of the other ctrl-alt-Fx keys work. I don't specifically remember > trying ctrl-alt-F12, but I'll give that a go next time. > > I tried rolling back Xorg server, that didn't seem to help. > > Google has found reports of recent versions (24.3.x) of mesa being > blamed for problems like this. I see in the logs that mesa got > upgraded from 24.2.8 to 24.3.3 on the 20th. I've rolled that back, to > see if that helps. I thought it started a little earlier than that, > but my memory may be playing tricks on me: it's been a long week. > > I've been looking for a good document with some recommendations on how > to use the various SysRq functions (in what sequence), but all I can > ever find is just lists of the commands with very descriptions of > each. > > >
This is two links I found. Should help. https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html https://linuxconfig.org/how-to-enable-all-sysrq-functions-on-linux When I have a system to lock up and nothing else works, I remember it this way. Reboot Even If System Utterly Broken. R - E - I - S - U - B. Another trick, using the F option. If something is using a lot of memory and making your system use swap which makes a system very slow, just Alt Sysrq F to kill it. I've done that when Firefox gets really hungry. I can't recall if you need to do the R option first for the F option or not. It's been a while. Dale :-) :-)
