Version: (using KDE 4.4.2) Compiler: GCC G++ 4.4.3 OS: Linux Installed from: Ubuntu Packages Pressing the ALT key in Ubuntu 10.04 sometimes cause the currently focused window to un-maximize.
Are you actually using KWin (KDE window manager) and not Compiz or MetaCity (Gnome window manager)? You can check by right-click on window title bar. Selecting "Configure Window Behavior..." there should open the KWin configuration dialog.
sounds like the window also receives an active mousemove event. iff you're using kwin and opened the config dialog, enter the "screen edges" dialog and check whether "Maximize Windows by draggin them..." ("quick maximization" aka aero-snap) is checked. In case uncheck and see whether the problem remains. Sure you didn't accidently also pressed the left mouse button and moved the pointer (eg. accidently on a touchpad)
(In reply to comment #1) > Are you actually using KWin (KDE window manager) and not Compiz or MetaCity > (Gnome window manager)? You can check by right-click on window title bar. > Selecting "Configure Window Behavior..." there should open the KWin > configuration dialog. Yes I am using KWin, right clicking on the window title bar and selecting "Configure Window Behavior" opens up the KWin configuration dialog.
(In reply to comment #2) > sounds like the window also receives an active mousemove event. > iff you're using kwin and opened the config dialog, enter the "screen edges" > dialog and check whether "Maximize Windows by draggin them..." ("quick > maximization" aka aero-snap) is checked. > In case uncheck and see whether the problem remains. > > Sure you didn't accidently also pressed the left mouse button and moved the > pointer (eg. accidently on a touchpad) I will try this and report back, might take a while since it doesn't happen often.
any news?
Still happens :( I'm wondering if my keyboard / track pad might be malfunctioning. There have been cases where I have only one hand on the keyboard when I press the alt key, when the window I am working in de-maximizes. But it usually after I have used the mouse- so it could be that my track pad is offering up some bogus movement. Anyway to test this?
I've been able to reproduce this more successfully. 1. I load up a firefox page thats larger than my vertical screen resolution so I can scroll up and down. 2. I then use right most portion of my mouse trackpad to scroll up and down. 3. I stop touching the track pad and quickly press the alt button. This causes the window to unmaximize. These steps cause this problem to occur 3/5 times I do it- and it is clear from my experiments that I am not actively touching the trackpad.
still sounds related to the touchpad usage, thus a hardware or touchpad driver bug. did you disbale quick maximization at all? (in case this is in a way related to bugs #222100 & #240024)
sound very much like bug #222100. If you have disabled quick maximization and the problem still occurs, please reopen. *** This bug has been marked as a duplicate of bug 222100 ***