Hi,

I'm completely new to linux, after tasting many desktops I opted for debian + kde (x64), and so, I began to translate mi wind*** life to linux. I was traying to kill a process from within a script (python), and the kde went black for a moment, and then came back, and every thing worked fine until reboot.
Alt+f2, the rest of the subject and some others things won't work. I've been reading some posts, and there are some recommendations, but there's seem to be several causes to the same problem - in a couple of times they ask for some outputs:

kwrapper4 ksmserver

kdeinit4_wrapper: Warning: connect(/root/.kde/socket-centralv/kdeinit4__0) failed: : No such file or directory
No protocol specified
unnamed app(2198): Cannot connect to the X server
No protocol specified
ksmserver: cannot connect to X server :0

qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.logout -1 -1 -1

Could not connect to D-Bus server: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally with the following error: No protocol specified
Autolaunch error: X11 initialization failed.

$PATH

bash: /home/uname/bin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games: No such file or directory

In the first two I used sudo. At this time, to shutdown or reboot I do it in the console. Any help will be appreciated,


ps: I'm that new, that I hope this is the right forum for my question, case not, can some one tell me where to post it? Thanks again

The outputs say there's no connection to an X11 server - likely because you attempted them via ssh or from VT2.

Let's start with what works and what not. Enter the broken login and obtain a process tree (works via ssh or from VT2 w/o problems):

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ps fax | tee pstree.txt

(the new pstree.txt will contain the output you saw on screen - in case you're currently doing it the windows way to write down screen ouputs by hand
In the broken session, do you have a desktop and panels? Can you show kickoff (an application launcher) by clicking the gearbox icon?

Finally, it would be great to see what you did by "kill a process from within a script (python)" ie. the script. Sounds as if you nuked ksmserver (never do that easily, it's what keeps the session alive)

Thanks luebking,

luebking wrote:Let's start with what works and what not. Enter the broken login and obtain a process tree

here:
PID TTY STAT TIME COMMAND
2 ? S 0:00 [kthreadd]
3 ? S 0:00 \_ [ksoftirqd/0]
4 ? S 0:00 \_ [kworker/0:0]
5 ? S< 0:00 \_ [kworker/0:0H]
6 ? S 0:00 \_ [kworker/u16:0]
7 ? S 0:00 \_ [rcu_sched]
8 ? S 0:00 \_ [rcu_bh]
9 ? S 0:00 \_ [migration/0]
10 ? S 0:00 \_ [watchdog/0]
11 ? S 0:00 \_ [watchdog/1]
12 ? S 0:00 \_ [migration/1]
13 ? S 0:00 \_ [ksoftirqd/1]
14 ? S 0:00 \_ [kworker/1:0]
15 ? S< 0:00 \_ [kworker/1:0H]
16 ? S< 0:00 \_ [khelper]
17 ? S 0:00 \_ [kdevtmpfs]
18 ? S< 0:00 \_ [netns]
19 ? S 0:00 \_ [khungtaskd]
20 ? S< 0:00 \_ [writeback]
21 ? SN 0:00 \_ [ksmd]
22 ? SN 0:00 \_ [khugepaged]
23 ? S< 0:00 \_ [crypto]
24 ? S< 0:00 \_ [kintegrityd]
25 ? S< 0:00 \_ [bioset]
26 ? S< 0:00 \_ [kblockd]
27 ? S 0:00 \_ [kworker/0:1]
28 ? S 0:00 \_ [kworker/1:1]
29 ? S 0:00 \_ [kswapd0]
30 ? S 0:00 \_ [fsnotify_mark]
36 ? S< 0:00 \_ [kthrotld]
37 ? S< 0:00 \_ [ipv6_addrconf]
38 ? S< 0:00 \_ [deferwq]
39 ? S 0:00 \_ [kworker/u16:1]
46 ? S 0:00 \_ [kworker/1:2]
75 ? S 0:00 \_ [khubd]
76 ? S< 0:00 \_ [acpi_thermal_pm]
77 ? S< 0:00 \_ [ata_sff]
83 ? S 0:00 \_ [scsi_eh_1]
84 ? S< 0:00 \_ [scsi_tmf_1]
85 ? S 0:00 \_ [scsi_eh_2]
86 ? S< 0:00 \_ [scsi_tmf_2]
87 ? S 0:00 \_ [scsi_eh_3]
88 ? S< 0:00 \_ [scsi_tmf_3]
89 ? S 0:00 \_ [scsi_eh_4]
90 ? S< 0:00 \_ [scsi_tmf_4]
91 ? S 0:00 \_ [scsi_eh_5]
92 ? S< 0:00 \_ [scsi_tmf_5]
93 ? S 0:00 \_ [scsi_eh_6]
94 ? S< 0:00 \_ [scsi_tmf_6]
95 ? S 0:00 \_ [kworker/u16:2]
96 ? S 0:00 \_ [kworker/u16:3]
97 ? S 0:00 \_ [kworker/u16:4]
98 ? S 0:00 \_ [kworker/u16:5]
99 ? S 0:00 \_ [kworker/u16:6]
100 ? S 0:00 \_ [kworker/u16:7]
101 ? S 0:00 \_ [scsi_eh_7]
102 ? S< 0:00 \_ [scsi_tmf_7]
103 ? S 0:00 \_ [usb-storage]
105 ? S 0:00 \_ [kworker/u16:8]
108 ? S< 0:00 \_ [kworker/0:1H]
110 ? S< 0:00 \_ [kworker/1:1H]
111 ? S 0:00 \_ [kworker/0:2]
141 ? S 0:00 \_ [jbd2/sdb1-8]
142 ? S< 0:00 \_ [ext4-rsv-conver]
179 ? S 0:00 \_ [kauditd]
221 ? S 0:00 \_ [irq/43-mei_me]
222 ? S< 0:00 \_ [hd-audio0]
227 ? S< 0:00 \_ [kpsmoused]
232 ? S< 0:00 \_ [cfg80211]
238 ? S 0:00 \_ [kworker/0:3]
240 ? S 0:00 \_ [kworker/1:3]
263 ? S< 0:00 \_ [kvm-irqfd-clean]
307 ? S 0:00 \_ [jbd2/sdb6-8]
308 ? S< 0:00 \_ [ext4-rsv-conver]
508 ? S< 0:00 \_ [rpciod]
510 ? S< 0:00 \_ [nfsiod]
1 ? Ss 0:01 /sbin/init
182 ? Ss 0:00 /lib/systemd/systemd-udevd
188 ? Ss 0:00 /lib/systemd/systemd-journald
493 ? Ss 0:00 /sbin/rpcbind -w
503 ? Ss 0:00 /sbin/rpc.statd
517 ? Ss 0:00 /usr/sbin/rpc.idmapd
522 ? Ss 0:00 /usr/sbin/sshd -D
523 ? Ss 0:00 /usr/sbin/atd -f
524 ? Ss 0:00 /usr/sbin/cron -f
526 ? Ssl 0:00 /usr/sbin/NetworkManager --no-daemon
914 ? S 0:00 \_ /sbin/dhclient -d -q -sf /usr/lib/NetworkManager/nm-dhcp-helper -pf /var/run/dhclient-wlan0.pid -lf /var/lib/NetworkManager/dhclient-81c3731c-1e6e-4733-96bf-0d4c26bb3173-wlan0.lease -cf /var/lib/NetworkManager/dhclient-wlan0.conf wlan0
528 ? Ssl 0:00 /usr/sbin/ModemManager
532 ? Ss 0:00 /lib/systemd/systemd-logind
541 ? Ss 0:00 avahi-daemon: running [centralv.local]
569 ? S 0:00 \_ avahi-daemon: chroot helper
542 ? Ss 0:00 /usr/bin/dbus-daemon --system --address=systemd: --nofork --nopidfile --systemd-activation
570 ? Ss 0:00 /usr/sbin/privoxy --pidfile /var/run/privoxy.pid --user privoxy /etc/privoxy/config
580 ? Ssl 0:00 /usr/sbin/rsyslogd -n
586 ? Ss 0:00 /usr/sbin/cupsd -f
587 ? Ss 0:00 /usr/sbin/cups-browsed
588 ? Ss 0:00 /usr/sbin/acpid
601 tty1 Ss+ 0:00 /sbin/agetty --noclear tty1 linux
602 ? Ss 0:00 /usr/sbin/irqbalance --pid=/var/run/irqbalance.pid
604 ? Ss 0:00 /usr/sbin/atieventsd
1712 ? S 0:00 \_ sh -c /etc/ati/authatieventsd.sh grant :0 /tmp/atievntX.pVLk9W
1713 ? S 0:00 \_ /bin/sh /etc/ati/authatieventsd.sh grant :0 /tmp/atievntX.pVLk9W
854 ? Ss 0:00 /usr/bin/kdm -config /var/run/kdm/kdmrc
856 tty7 Rs+ 0:03 \_ /usr/bin/X :0 vt7 -br -nolisten tcp -auth /var/run/xauth/A:0-3wArhb
912 ? S 0:00 \_ -:0
1108 ? Ss 0:00 \_ /bin/sh /usr/bin/x-session-manager
1174 ? Ss 0:00 \_ /usr/bin/ssh-agent /usr/bin/dbus-launch --exit-with-session x-session-manager
1288 ? S 0:00 \_ kwrapper4 ksmserver
862 ? Ssl 0:00 /usr/lib/policykit-1/polkitd --no-debug
886 ? Ss 0:00 /sbin/wpa_supplicant -u -s -O /run/wpa_supplicant
891 ? Ss 0:00 /usr/sbin/exim4 -bd -q30m
1105 ? Ss 0:00 /lib/systemd/systemd --user
1106 ? S 0:00 \_ (sd-pam)
1159 ? S 0:00 dbus-launch --autolaunch=634c0e4db2dc4039ac95e8069f2bca85 --binary-syntax --close-stderr
1171 ? Ss 0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
1177 ? S 0:00 /usr/bin/dbus-launch --exit-with-session x-session-manager
1178 ? Ss 0:00 /usr/bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
1229 ? S 0:00 /usr/lib/kde4/libexec/start_kdeinit +kcminit_startup
1230 ? Ss 0:00 kdeinit4: kdeinit4 Running...
1297 ? Sl 0:00 \_ kdeinit4: ksmserver [kdeinit]
1347 ? Sl 0:02 | \_ kwin -session 10d5c6daea000145463533400000013350000_1455495673_73965
1449 ? S 0:00 \_ kdeinit4: kio_desktop [kdeinit] desktop local:/tmp/ksocket-gerardo/klauncherMT1242.slave-socket local:/tmp/ksocket-gerardo/plasma-deskt
1457 ? Sl 0:00 \_ kdeinit4: kio_trash [kdeinit] trash local:/tmp/ksocket-gerardo/klauncherMT1242.slave-socket local:/tmp/ksocket-gerardo/plasma-desktopoN
1492 ? S 0:00 \_ kdeinit4: kio_file [kdeinit] file local:/tmp/ksocket-gerardo/klauncherMT1242.slave-socket local:/tmp/ksocket-gerardo/kio_desktopnS1449.
1726 ? S 0:00 \_ kdeinit4: klauncher [kdeinit] --fd=13
1728 ? Sl 0:24 \_ /usr/bin/iceweasel
1244 ? Sl 0:00 kdeinit4: kded4 [kdeinit]
1258 ? S 0:00 /usr/bin/kglobalaccel
1278 ? Sl 0:00 kdeinit4: kcminit_startup [kdeinit]
1280 ? Sl 0:00 /usr/bin/kactivitymanagerd
1281 ? Ssl 0:00 /usr/lib/upower/upowerd
1327 ? Ssl 0:00 /usr/lib/udisks2/udisksd --no-debug
1366 ? Sl 0:06 /usr/bin/plasma-desktop
1391 ? S 0:00 \_ ksysguardd
1429 ? S 0:00 /usr/bin/kuiserver
1430 ? Ss 0:00 /usr/lib/bluetooth/bluetoothd
1451 ? Sl 0:00 /usr/bin/akonadi_control
1453 ? Sl 0:00 \_ akonadiserver
1455 ? Sl 0:00 | \_ /usr/sbin/mysqld --defaults-file=/home/gerardo/.local/share/akonadi/mysql.conf --datadir=/home/gerardo/.local/share/akonadi/db_data/ --socket=/tmp/akonadi-gerardo.kWJ2kN/mysql.socket
1570 ? Sl 0:00 \_ /usr/bin/akonadi_agent_launcher akonadi_akonotes_resource akonadi_akonotes_resource_0
1571 ? S 0:00 \_ /usr/bin/akonadi_archivemail_agent --identifier akonadi_archivemail_agent
1572 ? Sl 0:00 \_ /usr/bin/akonadi_agent_launcher akonadi_contacts_resource akonadi_contacts_resource_0
1573 ? S 0:00 \_ /usr/bin/akonadi_followupreminder_agent --identifier akonadi_followupreminder_agent
1574 ? Sl 0:00 \_ /usr/bin/akonadi_agent_launcher akonadi_ical_resource akonadi_ical_resource_0
1575 ? Sl 0:00 \_ /usr/bin/akonadi_agent_launcher akonadi_maildir_resource akonadi_maildir_resource_0
1576 ? S 0:00 \_ /usr/bin/akonadi_maildispatcher_agent --identifier akonadi_maildispatcher_agent
1585 ? S 0:00 \_ /usr/bin/akonadi_mailfilter_agent --identifier akonadi_mailfilter_agent
1586 ? S 0:00 \_ /usr/bin/akonadi_migration_agent --identifier akonadi_migration_agent
1589 ? S 0:00 \_ /usr/bin/akonadi_newmailnotifier_agent --identifier akonadi_newmailnotifier_agent
1595 ? S 0:00 \_ /usr/bin/akonadi_notes_agent --identifier akonadi_notes_agent
1597 ? S 0:00 \_ /usr/bin/akonadi_sendlater_agent --identifier akonadi_sendlater_agent
1754 ? Sl 0:00 /usr/lib/at-spi2-core/at-spi-bus-launcher
1804 ? Sl 0:00 /usr/bin/konsole
1806 pts/0 Ss 0:00 \_ /bin/bash
1813 pts/0 R+ 0:00 \_ ps fax
1814 pts/0 D+ 0:00 \_ /bin/bash

luebking wrote:Can you show kickoff (an application launcher) by clicking the gearbox icon?

It's quite embarrassing, but, do you mean the 'k' with the gear in the (normaly, I hope so) left side of the panel? If that's the case, yes, I can click it and launch applications, console, vlc, etc. (although, there is no sound control in the panel...)

luebking wrote:Finally, it would be great to see what you did by "kill a process from within a script (python)" ie. the script. Sounds as if you nuked ksmserver (never do that easily, it's what keeps the session alive)

I was trying to kill a process I started with subprocess (subprocess.kill() - it was firefox, well, iceweasel), when I couldn't I tried os.system('kill pid#'), and then it happend... (a little off topic, but, I ended up using os.kill(int(pid#), signal.SIGTERM).

This is the second os reinstalation... pls, pls pls tell me I can fix this, thanks again,

Alt+F2 doesn't work because krunner isn't running (just start it from konsole: "krunner &")

ctrl+alt+del is usually bound to ksysguard (taskmanager on steroids) as a hotkey, three things need to work here:
1. the hotkeys daemon is running (calling "qdbus org.kde.kded /kded loadedModules" should include "khotkeys"), it's configurable from "kcmshell[4] kded" (the "4" is optional, names changes across distros since KDE5 was introduced)
2. there's an enabled shortcut to ksyguard (run "kcmshell[4] khotkeys" to configure hotkeys)
3. ksysguard must not fail (just run "ksysguard &" in konsole)

Shutdown and restart is a matter of its own - can you use it from the kickoff launcher?

This is the second os reinstalation...

Please never do this, it's a bad habit among windows users (because windows is largely a black box), but the preferred approach should be to fix things. The only thing like this that might ever be required is to force-update all packages (because there was an update failure due to a power loss or whatever)

Hi,

luebking wrote:... krunner isn't running (just start it from konsole: "krunner &")...
... ksysguard must not fail ;-) (just run "ksysguard &" in konsole)...
... "kcmshell[4] kded"...
... "kcmshell[4] khotkeys"...

It's possible to launch all 4 applications

luebking wrote:... 1. the hotkeys daemon is running (calling "qdbus org.kde.kded /kded loadedModules" should include "khotkeys")...

The output doesn't include khotkeys:
keyboard
networkstatus
statusnotifierwatcher
desktopnotifier
powerdevil
device_automounter
networkmanagement
ktimezoned
kscreen

I couldn't find what to do in the service manager, this is what I found:
Load-on-Demand Services
Cookie jar Not running
Directory Watcher Running
Display Management Not running
Favicons Not running
Hardware Detection Not running
Konqueror Porxy Configuration Not running
Network Watcher Not running
Password Caching Not running
Recent Document Watcher Not running
Sound Policy Not running
SSL Certificate Policy Not running

Startup Services
Apper Monitor Not running
Application menus daemon Not running
Drive Ejector Not running
Free Space Notifier Not running
Input Actions Not running
Keyboard Daemon Running
KMixD Not running
KScreen 2 Running
Network Status Running
Plasma Networmanagement module Running
Power Management Running
Remote URL Change Notifier Not running
Remobable Device Automounter Running
Status Notifier Manager Running
Time Zone Running
Write Deamon Not running

I changed to the default settings, all the startup services changed to running, but after a reboot I returned to the list above. In the "Custom Shortcuts", same history, couldn't find what to do.

luebking wrote:Shutdown and restart is a matter of its own - can you use it from the kickoff launcher?

noup.... have to do it from console

ha!!! may be it's obvious, but after the reboot Alt+f2 won't work again (unless I launch it from the console as you said before).

The thing is, it's not only alt+f2, ctrl+alt+del, shutdown and restart that stop working, also there is no sound control besides the clock in the panel, the shutdown option from the right menu in the mouse (in the desktop) won't work, also the mousepad utilities.... and I suspect that there are a couple of other app's deactivated.

Is there something I'm missing? thanks again,

The relevant daemon is "Input actions".
So, krunner doesn't autostart, neither does kmix (volume control); the daemon list resets to some subset (that you didn't choose) and you cannot shutdown.
Can you logout and login (without a reboot!) - how's the situation after the second login?
What's the output of "cat /etc/hostname"?

luebking wrote:So, krunner doesn't autostart, neither does kmix (volume control); the daemon list resets to some subset (that you didn't choose) and you cannot shutdown.

....

luebking wrote:Can you logout and login (without a reboot!) - how's the situation after the second login?

Noup, just reboot or shutdown via the console - and, nothing happen after many reboots (5, 6 ?). There's also an option from krunner, a "lock/logout", and although the app appears, it wont log me out.

luebking wrote:What's the output of "cat /etc/hostname"?

centralv

Thanks again

Rebooting shall never fix anything magically - that's voodoo

Let's see whether it's in the system or your account settings => create a new user, log into that account and see whether things work as expected over there.

I created the new user, and nothing, exactly the same thing (adduser + password + ....).

About the rebooting... too many years under the w....ater

Thanks a lot luebking,

ok, let's enter the voodoo arena.


check the outputs of:

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qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.currentSession
qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.canShutdown


Notably if the reply for the first call is empty, but in general try to add

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export QT_NO_GLIB=1


to /etc/profile (debian might have kicked that file and you'll find things like /etc/profile.local or /etc/profile.d - latter being a directory where you can add this to some qt_noglib.sh file that automatically gets sourced) and then reboot (it's just the most simple way to get that environment read in your case

thanks a lot!!!

luebking wrote:qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.currentSession

saved at previous logout

luebking wrote:qdbus org.kde.ksmserver /KSMServer org.kde.KSMServerInterface.canShutdown

own
true

luebking wrote:export QT_NO_GLIB=1

I saved it in /etc/profile

luebking wrote:and then reboot

and so I did, and some things came back: krunner, sound mixer, I can logout form the contextual menu in the mouse - in the other hand, apper tried to update the system, but it got stucked trying to ask for the root password (I stooped it and did it from the terminal), also, and may be it's not important, but at the very beginning of the session, the symbols (hd, the "k", etc.) won't appear.
The functionalities for the mousepad work, also the sound in the browser (iceweasel).

I tried to read something about export QT_NO_GLIB=1, but, to be honest, I didn't understand a thing, just that it has something to do with some Qt libraries... did I mess something up quite deep in kde? or... in the system?

Thanks for your patience,

Phewww ... you're running into https://bugs.kde.org/show_bug.cgi?id=328571

The clumsy glib event dispatcher is mostly annoying but required for integration with gobject. This affects several things - polkit in your case.
(A known bug, see https://bugs.kde.org/show_bug.cgi?id=294845 or https://bugs.kde.org/show_bug.cgi?id=334009, afair I even filed a patch somewhen since it's really trivial to enforce it inside a particular client like the polkit daemon)

Either update to 5.15 and remove the environment or (this is not! a very robust workaround!) move
/usr/lib/polkit-kde/polkit-kde-authentication-agent-1 to /usr/lib/polkit-kde/polkit-kde-authentication-agent-1.bin
and make /usr/lib/polkit-kde/polkit-kde-authentication-agent-1 a shell script

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#!/bin/sh
QT_NO_GLIB=0 /usr/lib/polkit-kde/polkit-kde-authentication-agent-1.bin


That script will however be overridden with the next update - and don't forget to make it executable

Thank you luebking,

What to do... I'm not a big fan of working with last versions, so I think I'll pass to update kde - though I'm tempted - and, well, at least it lets me work. I'll go with the work around you suggest, just a question, the modification in /etc/profile (adding "export QT_NO_GLIB=1"), should I leave it? or to delete it (after or before?) the move & new script?

Thanks again

leave it, it's still what prevents the broken login - the workaround only ensures that the polkit agent gets the glib dispatcher, since it relies on it.

Just a quick question,

The only files/dirs polkit* in /usr/lib are:

gerardo@centralv:/usr/lib$ ls -l pol*
total 32
-rwsr-xr-x 1 root root 14632 Nov 28 2014 polkit-agent-helper-1
-rwxr-xr-x 1 root root 14912 Nov 28 2014 polkitd

Although, I found ./usr/share/doc/polkit-kde-1, should I work with this instead?

Thanks!!!!