X windows video freeze - KV 5.10.x
by rdsherman from LinuxQuestions.org on (#5CM4M)
This behavior is observable for the last few weeks since Slackware64-current adopted KV 5.10.x (1<x<5). It has never been seen in any prior implementation with a similar configuration.
Random permanent lockups (onset in minutes - hours). Keyboard + all mouse buttons dead, mouse pointer moves. Restore by hard reset only (Power button).
Identical issue on two machines. Lenovo ThinkPads: P15v (i7 8c/16t integrated UHD graphics, new) & X390 (i7 4c/8t integrated UHD graphics, 1 year in service)
General configuration: X/Xorg default-configured, libinput, window managers (FVWM|Openbox|i3), browsers (Google-Chrome-Stable|Firefox); no display manager, nor any KDE or Xfce. (The char '|' indicates alternatives that do not matter.)
General remarks: Each of these machines also carries recent Fedora 33 (KV 5.9.16) & Ubuntu 20.04.1 (KV 5.8) Gnome installations; no lockups occur.
Using either of the machines to ssh as root at a console into the other seized machine shows that everything is actually running normally except the X server. kill(all) -9 on X, startx, xinit, .xinitrc has no effect. The logs in /var/log do not show any suspicious entries.
Some old postings suggest intel_idle.max_cstate=1 on the kernel command line has ameliorated the problem. It is being tested, but, really should not be needed.
Can anyone corroborate this? Comments?
Random permanent lockups (onset in minutes - hours). Keyboard + all mouse buttons dead, mouse pointer moves. Restore by hard reset only (Power button).
Identical issue on two machines. Lenovo ThinkPads: P15v (i7 8c/16t integrated UHD graphics, new) & X390 (i7 4c/8t integrated UHD graphics, 1 year in service)
General configuration: X/Xorg default-configured, libinput, window managers (FVWM|Openbox|i3), browsers (Google-Chrome-Stable|Firefox); no display manager, nor any KDE or Xfce. (The char '|' indicates alternatives that do not matter.)
General remarks: Each of these machines also carries recent Fedora 33 (KV 5.9.16) & Ubuntu 20.04.1 (KV 5.8) Gnome installations; no lockups occur.
Using either of the machines to ssh as root at a console into the other seized machine shows that everything is actually running normally except the X server. kill(all) -9 on X, startx, xinit, .xinitrc has no effect. The logs in /var/log do not show any suspicious entries.
Some old postings suggest intel_idle.max_cstate=1 on the kernel command line has ameliorated the problem. It is being tested, but, really should not be needed.
Can anyone corroborate this? Comments?