Comment 24 for bug 156550

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david_ri (david-d-cox) wrote :

Hi, GP -
Unfortunately for me, I added this line and it made no difference on my system. I found some interesting information on the redhat bug list (bug 389501) that talks about placement of screens in Xinerama, overlapping screens, etc. If I can stretch my brain around the sophisticated discussion, it seems to me that the window display server is overlapping the small laptop display (even though it's closed and should be off on my Dell C640) directly on top of the 1440x900 widescreen LCD I have connected to the VGA port. As long as the laptop display is on, the overlap persists, all applications think that the upper-left 1024x768 "piece" of my 1440x900 display is "maximized" - the panels only go part way across the screen, as does the screen saver, and maximizing windows only fill this portion of the screen. Interestingly, if I unmaximize windows, I can drag them to the right or manually increase their size and can use the rest of the 1440x900 screen just fine. This would make sense if the two screens were "overlapped" - I am dragging something across screens - except here, it's all on one monitor.

When I turn the LCD off by xrandr --output --LVDS --off, then the panels spring to full size on the 1440x900, maximize now fills the 1440x900 screen, and life is good. I suppose this is because the smaller rectangle that was somehow dictating what "maximize" means is now gone, so the fall-back becomes the larger display.

I hope this less than technically brilliant comment helps the smarter guys out a bit. :-)