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> On Friday 10 October 2014, Gerhard Zintel wrote:
>> On Tuesday 07 October 2014, Sl�vek Banko wrote:
>> > On Tuesday 07 of October 2014 11:34:25 Ilya Dogolazky wrote:
>> > > Hi !
>> > >
>> > > I'm running trinity desktop on Debian Testing linux.
>> > > Sometimes all the icons from desktop disappear and (at the same
>> time!)
>> > > the desktop lock button (blue lock symbol in the kicker panel) stops
>> > > to work.
>> > >
>> > > What service/program to I have to restart in order to fix it without
>> > > logging out and in again?
>> > >
>> > > Cheers
>> > >
>> > > Ilya Dogolazky
>> > >
>> >
>> > Disappearing icons from the desktop shows to crash KDesktop. Starting
>> kdesktop
>> > should correct the problem.
>> >
>> > At this situation please take a look into ~/.xsession-error, if there
>> is
>> > listed a backtrace about KDesktop crash? It could help to detect and
>> fix the
>> > problem.
>> >
>>
>> Update:
>> Today I faced the problem again. Unfortunately I did not look into the
>> .xsession-errors file before I started to relaunch kdesktop.
>> Nevertheless it did not crash. First action: I started kdesktop from
>> Konsole. It told me that kdesktop is already running but didn't come
>> back to the prompt. Icons were not recreated. I had to Ctrl-C for the
>> promt. "ps ax" showed me an old version of kdesktop and a second new one
>> with <defunct> message. Killing the defunct one was not possible. I
>> killed the original kdesktop program (Desktop went black) and relaunched
>> it and - voila - the icons reapeared on the desktop. Also the defunct
>> process of kdesktop was gone.
>>
>> I do not find anything special in the xsession errors file. I try to
>> investigate more accurate next time.
>
> today it happened again. Nothing special in .xsession-errors:
> $ tail -n .xsession-errors
> ------------- snip ------------------
> .
> .
> .
> konqueror: WARNING: failed to obtain ELF icon: ELF resource section not
> found
> TQClipboard: Unknown SelectionClear event received.
> .
> .
> .
> [kdesktop_lock] Warning: unable to create control socket
> '/tmp/tdesocket-global/
> kdesktoplockcontrol-0'. �Interactive logon modules may not function
> properly.
> [twin] X_SetInputFocus(0x1c00096): BadMatch (invalid parameter attributes)
> .
> .
> .
> X Error: BadWindow (invalid Window parameter) 3
> � Major opcode: �19
> � Minor opcode: �0
> � Resource id: �0x1c00096
> TQClipboard: Unknown SelectionClear event received.
> [twin] X_SetInputFocus(0x3a6ebaa): BadMatch (invalid parameter attributes)
> kmail: WARNING: FolderStorage::getMsg was asked for an invalid index. idx
> =0 count()=0
> ------------- snip ------------------
> All errors are displayed more often before without the above described
> desktop problem (no icons, no middle and right mouse button menu).
> Process kdesktop is running but there is additionally a "[kdesktop_lock]
> <defunct>" process. Might this be the culprit? I do not lock my desktop
> normally.
> I can not kill the <defunct> process but killing kdesktop process and
> relaunching it restores all to normal.
>
> now I have a running
> 21927 pts/4 � �S � � �0:00 kdesktop
> 21928 pts/4 � �S � � �0:00 /opt/trinity/bin/kdesktop_lock --internal 21927
>
> process again.
>
> Gerhard

Sounds almost like kdesktop is deadlocked.  Next time it happens can you
break into kdesktop with gdb (gdb --pid `pidof kdesktop`), execute "thread
apply all bt", and post the output?

Thanks!

Tim
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