Display problem with Kubuntu 10.10

Ioannis Vranos cppdeveloper at ontelecoms.gr
Wed Oct 20 00:05:54 UTC 2010

On Tue, 2010-10-19 at 21:19 +0000, pkaplan1 at comcast.net wrote:
> I have Thinkpad T400 with Intel graphics running kde4.5.2 and kubuntu
> 10.10 with an external monitor attached.  When the external monitor is
> attached, I have a single desktop spanning both monitors.  I can also
> run scripts to turn on and off the signal to the external monitor so
> that when it is off all Desktop contents condense to the single
> internal laptop monitor...So far so good.
> However, when I boot the computer without the external monitor
> attached the desktop is unusable.  The monitor shows the folderview
> activity that is normally displayed on the external monitor, none of
> the vertical panels and no open applications.  When I open apps, a
> task manager on a horizontal panel shows that the apps are open, but
> they are never visible on the screen.  If I attempt to add a panel, it
> displays for a few seconds and then disappears, probably to the same
> place the open apps live (if I then reboot with the external monitor
> the newly added panel appears on laptop monitor).  KDM however
> displays the login dialog correctly without an external monitor.
> The only way I've found to resolve the situation is to delete ~/.kde
> each time I login without the external monitor.  In other words, I can
> configure the computer to display properly either with an external
> monitor or without an external monitor, but not for both situations.
> I've never seen this behavior with the same hardware through kubuntu
> 10.04 and kde4.5.1.  I'm guessing there's something funky with X in
> 10.10 but I have no idea what the problem is or how to configure my
> way out of the problem.
> Has anyone seen anything like this?  Any suggestions?
> Paul

Perhaps the issue is Kubuntu-specific.

You may find the Kubuntu mailing list here:


Ioannis Vranos


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