kde plasma5 crashes on login

[jrose]

This is for kubuntu. I just upgraded from 14.10 to 15.04 using `do-release-upgrade`.
As far as I could tell, there were no errors during the upgrade process.

I'm using sddm. On startup, I get the login screen, I enter my password,
then I see the progress bar briefly before the screen flickers and ultimately returns me to
the login screen.

I'm looking at syslog, and I see some suspicious messages:
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: QXcbConnection: Failed to get the primary output of the screen
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: kdeinit5: Fatal IO error: client killed
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: klauncher: Exiting on signal 15
Apr 26 08:13:26 john-M17xR4 org.gtk.vfs.Daemon[3102]: A connection to the bus can't be made
Apr 26 08:13:26 john-M17xR4 org.gtk.vfs.Daemon[3102]: g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: QXcbConnection: Failed to get the primary output of the screen
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: The X11 connection broke (error 1). Did the X11 server die?
Apr 26 08:13:26 john-M17xR4 org.a11y.Bus[3102]: g_dbus_connection_real_closed: Remote peer vanished with error: Underlying GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
Apr 26 08:13:26 john-M17xR4 org.a11y.atspi.Registry[3154]: XIO: fatal IO error 11 (Resource temporarily unavailable) on X server ":1"
Apr 26 08:13:26 john-M17xR4 org.kde.kglobalaccel[3102]: QXcbConnection: Failed to get the primary output of the screen
Apr 26 08:13:26 john-M17xR4 org.kde.kglobalaccel[3102]: The X11 connection broke (error 1). Did the X11 server die?
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: The X11 connection broke (error 1). Did the X11 server die?
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: klauncher: Exiting on signal 11
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: crashing... crashRecursionCounter = 2
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: Application Name = kdeinit5 path = /usr/bin pid = 2992
Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: Arguments: /usr/bin/kdeinit5 --fd=8
Apr 26 08:13:26 john-M17xR4 org.a11y.atspi.Registry[3154]: after 29 requests (29 known processed) with 0 events remaining.
Apr 26 08:13:26 john-M17xR4 kernel: [ 817.274492] QSGRenderThread[3186]: segfault at 7f97d5a284b0 ip 00007f97d5a284b0 sp 00007f97c35ee488 error 14 in locale-archive[7f97d5abc000+2c9000]

Any idea where I should go from here?

Thanks,
-John

[Ubuntu Foundations Team Bug Bot (crichton)]

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[jrose (jroesler)]

Just a quick update. I couldn't afford to wait, and I had nothing obvious
to try, so I just backed everything up and reinstalled 15.04 from disc.

The tracpad was disabled by default, which was weird, but otherwise it's
working fine now.

Sorry I deprived you of the debug opportunity. Hopefully it was just
something weird in my system state.

Thanks,
John
** Tags added: vivid

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https://bugs.launchpad.net/bugs/1448677

Title:
  kde plasma5 crashes on login

Status in kubuntu-meta package in Ubuntu:
  New

Bug description:
  This is for kubuntu. I just upgraded from 14.10 to 15.04 using
`do-release-upgrade`.
  As far as I could tell, there were no errors during the upgrade process.

  I'm using sddm. On startup, I get the login screen, I enter my password,
  then I see the progress bar briefly before the screen flickers and
ultimately returns me to
  the login screen.

  I'm looking at syslog, and I see some suspicious messages:
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: QXcbConnection: Failed
to get the primary output of the screen
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: kdeinit5: Fatal IO
error: client killed
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: klauncher: Exiting on
signal 15
  Apr 26 08:13:26 john-M17xR4 org.gtk.vfs.Daemon[3102]: A connection to the
bus can't be made
  Apr 26 08:13:26 john-M17xR4 org.gtk.vfs.Daemon[3102]:
g_dbus_connection_real_closed: Remote peer vanished with error: Underlying
GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: QXcbConnection: Failed
to get the primary output of the screen
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: The X11 connection broke
(error 1). Did the X11 server die?
  Apr 26 08:13:26 john-M17xR4 org.a11y.Bus[3102]:
g_dbus_connection_real_closed: Remote peer vanished with error: Underlying
GIOStream returned 0 bytes on an async read (g-io-error-quark, 0). Exiting.
  Apr 26 08:13:26 john-M17xR4 org.a11y.atspi.Registry[3154]: XIO: fatal IO
error 11 (Resource temporarily unavailable) on X server ":1"
  Apr 26 08:13:26 john-M17xR4 org.kde.kglobalaccel[3102]: QXcbConnection:
Failed to get the primary output of the screen
  Apr 26 08:13:26 john-M17xR4 org.kde.kglobalaccel[3102]: The X11
connection broke (error 1). Did the X11 server die?
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: The X11 connection broke
(error 1). Did the X11 server die?
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: klauncher: Exiting on
signal 11
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: crashing...
crashRecursionCounter = 2
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: Application Name
= kdeinit5 path = /usr/bin pid = 2992
  Apr 26 08:13:26 john-M17xR4 org.kde.kded5[2985]: KCrash: Arguments:
/usr/bin/kdeinit5 --fd=8
  Apr 26 08:13:26 john-M17xR4 org.a11y.atspi.Registry[3154]: after 29
requests (29 known processed) with 0 events remaining.
  Apr 26 08:13:26 john-M17xR4 kernel: [ 817.274492] QSGRenderThread[3186]:
segfault at 7f97d5a284b0 ip 00007f97d5a284b0 sp 00007f97c35ee488 error 14
in locale-...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Francesco Belladonna (fire-dragon-dol)]

@Alberto I think I found the reason.

The bug is that startup scripts containing `exit` (0 or 1 or whatever exit code) added through the UI "stops" the user from logging in.

I think this is a regression, had this problem before, but I had this script for long time (starts yakuake) and only today it started causing problems.

[Francesco Belladonna (fire-dragon-dol)]

Just to be clear, "added through ui" in ubuntu means the script is in .config/plasma-workspace/env/yourscript.sh