http://bugzilla.opensuse.org/show_bug.cgi?id=1178812 http://bugzilla.opensuse.org/show_bug.cgi?id=1178812#c2 Stakanov Schufter changed: What |Removed |Added ---------------------------------------------------------------------------- Flags|needinfo?(stakanov@freenet. | |de) | --- Comment #2 from Stakanov Schufter --- Created attachment 843619 --> http://bugzilla.opensuse.org/attachment.cgi?id=843619&action=edit The user that currently crashes and started first xorg-sessionlog Opens first, normal. Then B opens then when going back you find the user A to be a "ghost". Green background only cursor. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1178812 http://bugzilla.opensuse.org/show_bug.cgi?id=1178812#c4 --- Comment #4 from Stakanov Schufter --- Created attachment 843620 --> http://bugzilla.opensuse.org/attachment.cgi?id=843620&action=edit User B secondo to open xorgsessionlog This one is the one that "hops" a tty when it happens. Sometimes both crashes. It is possible to go from one to the other with ctrl+alt+Fn and it seems stable (with the exception of the strange "hopping" from tty8 to 9 of user B. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1178812 http://bugzilla.opensuse.org/show_bug.cgi?id=1178812#c6 --- Comment #6 from Stakanov Schufter --- I can now confirm (after a complete new install of TW) that the problem does hit also a virgin TW. Actually what happens are two bugs, I will open another one on a plasma issue that may or may not be connected. However I will do so after having had a bit of feedback and advise on how to debug / discerne what is actually the problem. a) I notice a growing system load on one of the users. This starts with fluctuating CPU usage of 5 to 15 then 20 to 40% finally after a while it goes up to 100% and the system gets sluggish. That sluggishness is confined in that severity of this plasma user being on the active TTY. b) whenever I open two user, the second user will eventually crash (I suppose this, I do not actually see the issue but when changing user) and "migrate" of one TTY so: TTY7 first user, TT8 second user. When shifting from second user to first and then back (no matter how - with Ctrl+Alt+Fn or via the menu of Plasma) this will cause the second user to be not on TTY8 to TTY9. All other TTY displays but TTY1 are then unusable, no prompt, no activity, TTY10 goes black, no output. c) it does not matter if the user hit by the CPU bug is the first or second to open. d) it does influence the user hit by the CPU bug, when it happens, as the sluggishness and impossibility of completing actions (after a click it takes up to 10 seconds for a reaction) is greatly enhanced in speed of degradation and severity. What did I do up to now: after having read a bug report on KDE from 2019 (by itself not conclusive) I tried to eliminate the entire cache from the user with the CPU load. That gave a slight advance, but after few time the problem returns. (In order to eliminate the folder, all local users were offline, and the cleaning was done via root. Permissions of folder were checked, the reconstruction of the default /home/.cache was done by plasma, when the user started subsequently. This allowed to be sure no essential data would be lost or anything damaged. I noticed the "culprit" of load being either "plasmashell" or "kwin-X11". The main part of the time it is "plasmashell" showing 100% of load. I will be happy to try to debug this, because that user results practically invalidated by this bug. When switching to the other user, the session is usable and, although slightly more load, not showing less usability. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1178812 http://bugzilla.opensuse.org/show_bug.cgi?id=1178812#c8 Stakanov Schufter changed: What |Removed |Added ---------------------------------------------------------------------------- Component|KDE Workspace (Plasma) |Other Assignee|opensuse-kde-bugs@opensuse. |screening-team-bugs@suse.de |org | Summary|Plasma desktop is not able |SDDM is not able to handle |to handle two user (with |changes between two user |tty migrating or desktop |(with ctrl+alt+Fn or |crashing) |desktop plasma) without | |crashing in F8 and shifting | |the second user to F9. --- Comment #8 from Stakanov Schufter --- Some more on how this behaves. When having two users open e.g. A and B. When shifting with ctrl+alt+Fn from B (F8) to A (F9), it asks the password (with a regular SDDM screen) for A. You give the password and it opens instead the very session B you are coming from. You shift again session with ctrl+alt+Fn to reach A: no password is required (grace period) and you now you are in A. Now you have F7 = A, F=8 empty, F9=B. By what I see this is an SDDM and not a plasma problem. I change this in the bug description. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=1178812 http://bugzilla.opensuse.org/show_bug.cgi?id=1178812#c10 --- Comment #10 from Stakanov Schufter --- this still happens sometimes, but the question is, is this an issue of sddm or of the xserver. I am prone to think that the issue might be the x-server. So renaming it. -- You are receiving this mail because: You are on the CC list for the bug.