Created attachment 11812 [details]
journalctl -b -1 output when doing tests
Today with Cauldron up to date, I do tests following:
1 - Login from sddm (graphical.target) on user1 (uid 1000), desktop
environment is Plasma 5.
2- Do something within desktop (open app for example).
3- Logout from menus as usual. And go back to sddm.
4- Log on user2 (uid 1001), Plasma session and do something inside like open
5- Log out and go back sddm.
6- Put system to sleep with icon in sddm.
7- Wait several minutes and put system runs with press any key.
8- sddm displays his menu.
9- Log on user1 (uid 1000)
10- See plasmashell not running: black background, mouse OK, autostart apps
like Konversation open without window decoration, unmovable, KRunner (alt-F2)
is OK to run apps but they can't be moved.
What I see in journal each time I do plasmashell in Konsole:
plasmashell: requesting unexisting screen -1
plasmashell: requesting unexisting screen -1
Ctrl+alt+Backspace 2 times repeated well Zap Xorg server and go well back on
Rebooting system their is a complain:
user2 still logged on seat0
user3 still logged on seat0
Do systemctl reboot -i to ignore inhibitors.
I rebooted there after and after reboot, first session runs fine. Sleep and
Resume is OK if I don't log out my account.
I can retry this behavior at every try. If system goes to sleep with only sddm
at tty1, every plasma session launched after don't permit plasmashell from
Operating System: Mageia 8
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
Kernel Version: 5.8.2-desktop-2.mga8
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-6600K CPU @ 3.50GHz
Memory: 15.6 Gio of RAM
Graphics Processor: GeForce GTX 1660 Ti/PCIe/SSE2
Nvidia nonfree drivers are running version
I see this behavior after each system sleep when there is only sddm on tty1:
background of sddm is no longer blurry and each user log on results of no
plasmashell running when session is opened.
Assigning to sddm maintainers (KDE team) and even basesystem for additional forensics.
After carefully reading my logs... I see sessions are not properly closed.
$ loginctl list-sessions
SESSION UID USER SEAT TTY
c2 1000 aurelien seat0
c4 1002 enfants seat0
c6 1000 aurelien seat0
Normally c2 and c4 sessions must be closed and no longer seen while c6 exists.
I am not using fast-userswitching here.
systemd misconfiguration? sddm was c1, c3 and c5 session.
Added attachment from Ksysguard.
Created attachment 11825 [details]
ksysguard: still running process belonging to no longer connected user
There are running process belonging to no longer connected user.
In this case, they belong to user "enfant" who is no longer connected to what ever TTY.
TTY1 (graphical) is user 1000 (aurelien) and no other TTY has a graphical session.
I confirm this bug. After closing a user session, I have to kill the following processes manually :
- /usr/lib/systemd/systemd --user
I do think the issue is in how Plasma handles a logout. Instead of killing definitely all Plasma applications, some are still here and wait for X11 server...
Also, some don't properly die on exit.
This is in process to be managed by systemd scope in Plasma 5.21 (Optional).
Also, this upstream fixed bug:
this is still present in our distribution.
I also wonder why X server complains about missing logind integration when running sddm although this not affect GDM and GNOME.
[ 19.081] (II) systemd-logind: logind integration requires -keeptty and -keeptty was not provided, disabling logind integration
If this is provided, a logout in Plasma results of properly handle all remaining user process.
Mageia 8Source RPM:
kglobalaccel5 will no longer trigger a relaunch of itself will session is logged out. Fix backported by David Geiger. Thank you so much.
If you boot your system, log on to the first time via sddm to Plasma Desktop, your session is seen by systemd/logind as session "c2".
If you logout, or trigger "Ctrl + Alt + Backspace" twice :
Some process remains actives to the session c2 like:
- baloo_file (/etc/xdg/autostart/baloo_file.desktop)
which is owned by baloo-5.76.0-2.mga8.src.rpm
- geoclue (/etc/xdg/autostart/geoclue-demo-agent.desktop)
which is owned by geoclue-2.5.7-1.mga8.src.rpm
These two process are not killed when the Plasma session is logged off.
But, as far as I can see, the new Plasma session no longer make sooo loong time to startup next time.
Not as a side effect, that if you do a Ctrl + Alt + Backspace twice, this will deactivate the Plasma compositor on next logon. Even if you reactivate it under Plasma Systemsettings5 => Hardware => Display and Monitor => Compositor. You don't have full 3D accelerated session. This is the desired upstream behavior. You need to restart your session again...
Added this bug to errata in a simple way, for now.
So for us who dont care about baloo or geoclue, we can simply remove that two .desktop files from autostart/ ?
(In reply to Morgan Leijström from comment #8)
> So for us who dont care about baloo or geoclue, we can simply remove that
> two .desktop files from autostart/ ?
But something that normally cleans up the session at logout does not do its job.
I do think this is due to logind integration that is not working for Plasma.
If you see /var/log/Xorg.0.log you can see a complain about -keeptty not present and that logind integration is not enabled.
Additional fixes are landing in this:
The kglobalaccel5 daemon can no longer block re-login by crashing on the previous log-out and then getting stuck (David Edmundson, Plasma 5.22 or Frameworks 5.82; whichever one you get first)
I tried the workaround suggested in bug https://bugs.kde.org/show_bug.cgi?id=429426 under mga8 (plasma-workspace-5.20.4-5.mga8, kwin-5.20.4-3.mga8), by adding:
cat <<EOF > /etc/X11/xinit.d/99-reset-failed-user-service
# to be sourced
systemctl --user reset-failed
chmod 755 /etc/X11/xinit.d/99-reset-failed-user-service
cat <<EOF > /etc/X11/xinit/xinitrc.d/99-reset-failed-user-service
# to be sourced
systemctl --user reset-failed
chmod 755 /etc/X11/xinit/xinitrc.d/99-reset-failed-user-service
it mitigated a bit, but after 4-5 subsequent X11-Zapping (Ctrl-Alt-Backspace-Backspace) the plasma desktop hung at the progress bar of the splash screen as usual. Chances are higher if you press Ctrl-Alt-Backspace-Backspace as soon as you see the "panel" bar in the desktop screen.
To narrow stuff, you can also try without any desktop manager (sddm, etc.), using startx (as described in https://bugs.mageia.org/show_bug.cgi?id=27362#c16).
I did a further experiment: build a plasma-workspace-5.20.4 with reverting these two upstream commits (the one cited in the RH bug):
the resulting desktop mitigated further, however in my case after 12 Ctrl-Alt-Backspace-Backspace subsequent logins in a row, at 13th the plasma desktop timed out at the splash progress bar as usual.
IMHO the locking problems happens in different places.
Note that apparently kwin_x11 is not involved. A Plasma session can start even without a window manager. You might try this just renaming the binary /usr/bin/kwin_x11 to /usr/bin/kwin_x11_, and then start plasma. You get a full desktop starting with the panel bar (apart that windows can't be resized/moved), however after a certain amount of X11 subsequent zapping the hang on splash progress bar occur anyway.
In facts, the kglobalaccel5 stuff is the emerged part of the iceberg.
The Plasma session in his Mageia 8 implementation is broken. Not our fault, it is how Plasma handles background services/applications.
In current form, it loads them but they escape ksmserver/kdeinit server manager and they belong to systemd --user which is still running after a logoff.
When Plasma die on logoff, some binaries remain active (gpg-agent, at-spi stuff,...) All that need X11 are died properly (or not for kglobalaccel5 which respawn again 6 times).
This is silly. This leads to remaining sessions to consume resources and to conflict with later session as some background stuff can't properly register with the newer session.
BUT: great news: Plasma 5.21.5 and 5.22 have all of these fixed as soon as we use Plasma systemd start by issuing:
$ kwriteconfig5 --file startkderc --group General --key systemdBoot true
Rebooting and boh. All logoff are properly handle. Session is properly closed and there is no longer any remaining process.
Currently, upstream does not seem to fix the "classic" way to load Plasma which hacky but give a session... as long as user does not successive logoff/logon.
Side note/remark: The net_applet is properly handled in systemd starting way but his menu is still missing on Plasma X11. Will add more in its bug report.
Mageia 8 =>
kglobalaccel stuff still broken under Magiea 8Summary:
Multi-users successive logins, plasmashell no longer runs log on to whatever user after going into sleep =>
Plasma sessions are not clean up after logoff, lead to after successive logins that plasmashell is not loaded properly.Source RPM:
> In facts, the kglobalaccel5 stuff is the emerged part of the iceberg.
> The Plasma session in his Mageia 8 implementation is broken. Not our fault,
> it is how Plasma handles background services/applications.
> In current form, it loads them but they escape ksmserver/kdeinit server
> manager and they belong to systemd --user which is still running after a
> When Plasma die on logoff, some binaries remain active (gpg-agent, at-spi
> stuff,...) All that need X11 are died properly (or not for kglobalaccel5
> which respawn again 6 times).
> This is silly. This leads to remaining sessions to consume resources and to
> conflict with later session as some background stuff can't properly register
> with the newer session.
> BUT: great news: Plasma 5.21.5 and 5.22 have all of these fixed as soon as
> we use Plasma systemd start by issuing:
> $ kwriteconfig5 --file startkderc --group General --key systemdBoot true
> Rebooting and boh. All logoff are properly handle. Session is properly
> closed and there is no longer any remaining process.
> Currently, upstream does not seem to fix the "classic" way to load Plasma https://www.wildtornado.casino/en-AU
> which hacky but give a session... as long as user does not successive
> Side note/remark: The net_applet is properly handled in systemd starting way
> but his menu is still missing on Plasma X11. Will add more in its bug report.
Thank you for this solution.
On my Cauldron install, it's not just KDE Plasma refusing to load after the latest glibc and Qt library updates, but rather other Qt-based desktops like LXQt and Qt-based programs, too, like KDE Connect, qBittorrent, Protonup-Qt, CMake and many others.
GNOME, Cinnamon, other GTK desktops and GTK-based applications still work flawlessly after the update to said libraries.
Please fix the Qt toolchain as soon as possible, as it annoys me that I cannot use qBittorrent and my preferred desktop choice.
Was the excess problems due to incnsistent toolchain, Bug 30780 ?
(In reply to Morgan Leijström from comment #16)
> @Lewis G
> Was the excess problems due to incnsistent toolchain, Bug 30780 ?
If an unbootable KDE desktop and Qt apps refusing to load is showing signs of an incosistent Qt toolchain, then yes, it was.