Bug 377337 – kde-4.7.0: hangs on startup, after "K" icon has lit up

• Status: RESOLVED INVALID
• Product: Gentoo Linux

[Description [e-mail] 2011-08-01 22:18:51 UTC]

Version:           4.7 (using KDE 4.7.0) 

Title says it all really.  A new KDE installation, clean .kde folder.  After a
few days of use, it now hangs after the "K" has lit up.  Not always, but when
it happens only a full restart seems to fix the issue.  Logging in/out will
keep recreating the same problem

I attach a copy of .xsession-errors

Reproducible: Sometimes

[Comment 1 [e-mail] 2011-08-01 22:19:17 UTC]

Created attachment 281783 [details]
.xsession-errors from a typical unsuccessful boot

[Comment 2 Andreas K. Hüttel 2011-08-02 20:56:11 UTC]

Just for fun... please try (when it "hangs") switching with ALT+CTRL+F1 to the text console and then back to KDE with ALT+CTRL+F7... does that change anything?

[Comment 3 [e-mail] 2011-08-02 22:09:56 UTC]

No change at all I am afraid.  I got a copy of .xsession-errors precisely by doing that. (logging in a console and copying the file)

[Comment 4 [e-mail] 2011-08-02 22:19:48 UTC]

I believe the last line of .xsession-errors refers to me switching to the terminal actually

[Comment 5 Stefan Fuchs 2011-08-25 11:23:59 UTC]

I can confirm that. Same thing happens on my system.

[Comment 6 Vitaliy V. Osypenko 2011-08-31 15:37:39 UTC]

Here is my post from https://bugs.kde.org/show_bug.cgi?id=278943

It is possible I have the similar problem. With kde 4.6.5 and now with kde
4.7.0. KDM starts but never shows desktop, just mouse pointer. Top shows that
plasma-desktops has 100% cpu usage. I "resolved" it by removing
~/.kde4/share/apps/plasma/plasmoids directory where I had had two
similar plasmoids scripted in python.
And if I restore this directory after login and try to readd these plasmoids,
plasma-desktop hangs and eats cpu in the same way, but sometimes it adds
plasmoids and works fine. BUT when I run same plasmoid
with plasmoidviewer it always works!

It looks like that PyQt4, pykde4 or
something similar is involved. Other plasmoids work fine. For me don't work two
with this imports:

from PyQt4.QtCore import *
from PyQt4.QtGui import *
from PyKDE4.plasma import Plasma
from PyKDE4 import plasmascript
from PyQt4 import QtCore
import commands
import time

[Comment 7 Stefan Fuchs 2011-09-05 22:28:13 UTC]

Thanks Vitaly. After following your instructions, this hanging at the last symbol hasn't occurred again. The offending plasmoid was CpuFreqDisplay in my case.

[Comment 8 Andreas K. Hüttel 2011-09-06 21:09:41 UTC]

Blargh. We need to get our python act together.

[Comment 9 Andreas K. Hüttel 2011-11-05 21:13:36 UTC]

@optiluca: do you still have problems with 4.7.3 ?

[Comment 10 [e-mail] 2011-11-06 00:56:01 UTC]

Hi.  I don't know really, as the offending plasmoid was gmail-notifier, which I since stopped using.  I can re-install it and see if I can reproduce the previous behaviour

[Comment 11 Andreas K. Hüttel 2011-11-12 17:24:27 UTC]

OK there is no real point in keeping this open anymore- seems to be a configuration problem :|

[Comment 12 porternw.tmp 2012-08-01 14:02:31 UTC]

It's not a configuration problem (as far as I can tell), it's a Gentoo + python plasmoid problem.  Anytime a python plasmoid is active, this problem recurs and has been happening to me for ~9 months.  See https://bugs.kde.org/show_bug.cgi?id=278943, everyone there having this issue also seems to use Gentoo.  Also see the recently opened forum thread here: http://forums.gentoo.org/viewtopic-t-888852-highlight-.html