On Wed, 2009-02-04 at 08:58 +0100, Noèl Köthe wrote: > Am Dienstag, den 03.02.2009, 20:31 +0100 schrieb Brice Goglin: > > > > when you open a menu of e.g. KDE konqueror, GNOME nautilus or firefox > > > then the screensaver wouldn't start in my tests. First I thought its > > > a KDE bug http://bugs.kde.org/show_bug.cgi?id=176637 but the same > > > behaviour > > > can be reproduced with gnome. > > > Or if you open a pull down menu on a website with firefox/iceweasel the > > > screensaver will not start. > > > I can reproduce in Gnome with both gnome-screensaver and xscreensaver > > when opening firefox or gnome-terminal menus. > > > > xscreensaver reported the following lines when the timeout expired: > > xscreensaver: 20:16:02: couldn't grab keyboard! (AlreadyGrabbed) > > xscreensaver: 20:16:06: couldn't grab keyboard! (AlreadyGrabbed) > > xscreensaver: 20:16:10: couldn't grab pointer! (AlreadyGrabbed) > > xscreensaver: 20:16:10: unable to grab keyboard or mouse! Blanking aborted. > > The source code comment says: > > xscreensaver-5.07/driver/xscreensaver.c > ... > if (! blank_screen (si)) > { > /* We were unable to grab either the keyboard or mouse. > This means we did not (and must not) blank the screen. > If we were to blank the screen while some other program > is holding both the mouse and keyboard grabbed, then > we would never be able to un-blank it! We would never > see any events, and the display would be wedged. > > So, just go around the loop again and wait for the > next bout of idleness. (If the user remains idle, we > will next try to blank the screen again in no more than > 60 seconds.) > */ > ... > > I don't know if opening a menu in an application grabs mouse and > keyboard.
It does; it's the only way the menu can receive input events while the pointer is outside of it. AFAIK this is a pretty deep X11 design issue, so I'm afraid this can't be fixed easily. Feel free to bring it up upstream though. -- Earthling Michel Dänzer | http://www.vmware.com Libre software enthusiast | Debian, X and DRI developer -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
