Hi,

I have a laptop, dock and monitor. I often take my laptop with me and connected it to other displays as well, like my TV or Monitor at home.

The problem is KDE Display settings doesn't remember my configuration. At best I get a popup asking if I'd like to configure the screen, not always though. The 'set as default' option does not seem to work or I just don't understand how it's supposed to help.

I often end up having a second monitor configured but not connected. Or even unable to configure the connected second monitor, be cause Display Settings did not detect it. Sleep mode seems to interfer with detection as well.

Normal behaviour, imho, would be to automatically have a profile for each hardware combination and remember these profiles. Upon encountering a known hardware configuration the profile should be applied automatically.

Any suggestions how to achieve something like this? Maybe plugins or developments in newer versions of KDE?

The laptop is a thinkpad with intel gma hd 3000 graphics, kde 4.6.5 (fedora 15).

Some dual monitor fixes have found their way through 4.7. Still no profiles, but the situation has improved significantly in my view.

Further improvements are in the queue for 4.8.

I have this same problem. If I use the save as default button, my displays get sufficiently hosed up that I have to rm -rf ~/.kde/ after logging out so I can log back in.

Save as default worked for me, took an age to find it, though

So time has passed.

I have KDE 4.8.5 on my Fedora 17 install. I think that at some point a bug was introduced, I want to ask here whether this is a KDE issue or a driver issue. Or me missing something. My TP x220 laptop has Intel HD Graphics 3000.

In short, when I disconnect and external monitor (or take my laptop off the dock), kdisplay does not fully forget it. I'll explain in pictures:

At first, I have and external monitor configured:



All good. Now I disconnect the monitor without doing anything in the display app. I pop open the display app and see this:



Looks good, the monitor is disabled. However I can still move the cursor and windows to the right, where the monitor was. It is still configured and active - a phantom monitor. Clicking OK/Apply here does not disable it. Going to sleep and waking the laptop up again does not change anything.

When I click "Unify outputs" kdisplay admits it has the second monitor still configured, look at the overlapping screens:


However there's no way for me to truly disable the phantom monitor except for connecting the monitor again and disabling it manually or logging out of KDE. KDE did not have this issue when I first complained in this thread. Do others have a similar experience? Or is there an option so kdisplay would actually detect connected monitors?

Due to this bug I can't even test whether Save as default even works now.

Unfortunate.
Have you tried running "xrandr --output HDMI2 --off" and see if that fixes it? (assuming HDMI2 is the name of the output which is still enabled).

bcooksley wrote:Unfortunate.
Have you tried running "xrandr --output HDMI2 --off" and see if that fixes it? (assuming HDMI2 is the name of the output which is still enabled).

Thanks, that works, better than logging out . However it's still a bug and I couldn't figure out how to use the "Save as default" kdisplay option.

Any idea what might cause the problem? This issue popped up sometime during Fedora 16. Either after a kernel or KDE update. I probably should install Fedora 16 and start installing kernel and kde updates until I find what update has the bug. Sounds too tedious though, any alternatives?

Unfortunately I don't know why this happens - however I do know that the KDE Display Management tools are in need of quite a bit of love to get them into shape.

bcooksley wrote:Unfortunately I don't know why this happens - however I do know that the KDE Display Management tools are in need of quite a bit of love to get them into shape.

That's allright. I think I'll file a bug on bugzilla. Can you tell me the name of the component though? kdisplay is a kde3 term. In the process list I see:

Code: Select all

/usr/bin/kcmshell4 display

I can't find the correct compoent name here

krandr is the correct component I imagine.