Dear Maintainers,

I'm plagued by a bug that forces me to reboot my laptop frequently. I
hope I'm filing the bug to the right package, feel free to reassign.

The problem happens when I undock the laptop, which causes the laptop
to disconnect from the AC power and the network simultanously.
What happens is that the panel freezes. I.e. it becomes unresponsive
to mouse clicks, so I can't use it to configure networks, switch
windows, launch applications, i.e. the standard stuff one has it there
to do. I can use other features such as Alt-TABbing through windows,
and the mouse and keyboard can be used on other apps.

There are two ways to fix it:
1) Reconnect a wired network.
2) Reboot the box.

I do not have to reconnect AC power, just the wired network. However,
it doesn't happen if I just disconnect power or network, I have to do
both, but not necessarily at the same time.

It is usually not an option though, so I've tried this:
kjetil@owl:~$ killall plasma-desktop
kjetil@owl:~$ plasma-desktop
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusObjectPath: invalid path ""
plasma-desktop(23121)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(23121)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(23121)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
plasma-desktop(23121)/libplasma Plasma::isPluginVersionCompatible: unversioned plugin detected, may result in instability
QGraphicsLinearLayout::insertItem: cannot insert null item
QGraphicsLinearLayout::insertItem: cannot insert null item
plasma-desktop(23121)/kdecore (services) KServiceFactory::findServiceByDesktopPath: "systemsettings" not found
Object::connect: No such signal QDBusAbstractInterface::Changed()

Then, nothing happens. There are some alarming messages there, but I
have nothing on this box that is not from Debian, so I don't know
about the unversioned plugins...

When I reconnect the network, it comes back up. If I try to log out,
I can't log in again, so I tend to just reboot.

I've looked through upstream bugs, and some time ago there was a bug
that caused the the desktop to freeze for 30 seconds when AC power was
pulled, but this is definitly not the same bug.

I'm using Synergy on this box, but I have tried to disable it with no
changes.

I tend to dock and undock frequently, so this is really annoying...

About the hardware: It is a HP Elitebook 8470p, with Intel HD Graphics
4000.

Hi all!

I've been working a bit more to figure out what's causing the behaviour I
reported in this bug. I did suspect quicksynergy, since it threw a lot of
errors, but it occurs without it too. I have not posted my .xsession-errors,
since I believe they only messages I get there are irrelevant:
[0x26276b8] main input error: ES_OUT_RESET_PCR called
kded(6596)/kmix sink_input_cb: Ignoring sink-input due to it being designated
as an event and thus handled by the Event slider

This seems to be sound system problems, and not network related.

The final thing I have now noticed is that the panel does unfreeze after
something times out. It takes a very long time, and so far, I have not been
sitting around for long enough to see what it can be... Just that I have
noticed it happening if I have been AFK for a long time.

Best,

Kjetil

Am Donnerstag, 25. Juli 2013, 12:01:09 schrieb Kjetil Kjernsmo:

Dear Maintainers,

I have the same problem. The panel freezes almost all of time when I connect or disconnect to a vpn connection. It sometimes also happens when I resume my laptop from standby and the wireless lan connection it was connected before going to standby is not available anymore.

The panel does unfreeze eventually, but it takes several minutes up to hours if left alone, so I reboot the laptop most of the time it happens.

Please tell me, what additional information I can supply or if I should report it upstream.

Thank you for maintaining KDE in debian!

Stefanie

¡Hola Stefanie!

El 2014-07-25 a las 14:15 +0200, Stefanie Dargel escribió:

What you describe doesn't seems to be the same problem, but it might be the
same root cause. Which kde version are you using?

It would be helpful if you could maybe try to reproduce the problem with the
version currently in jessie.

Happy hacking,

Am Samstag, 13. September 2014, 17:09:40 schrieb Maximiliano Curia:
connect
hours

Hallo Maximiliano,

thank you for the reply.

I am using up-to-date jessie. I think I found the root cause for my problem.

I had a samba drive mounted via fstab, which I can only access with a vpn-
connection. So when I turned the vpn on and connected to the samba drive and
turned the vpn off or put my laptop into standby, the drive was still mounted.
That appearently froze the panel. The behaviour with kde-workspace 4:4.11.11-1
is the same.

Now I use autofs to mount the said drive and unmount it automatically and the
panel does not freeze anymore.

Best,
Stefanie

Hi!

I recently upgraded to Jessie, and had the same problem.

However, it indeed seems like the same problem, I had a NFS mount,
and when I unmounted that before disconnecting, it seems to have
solved the problem.

I don't know if this is something that could be solved on the package
level, it would have been awesome, but I suppose the answer is
simply "use autofs"?

Kjetil