Programs not accepting input?

Greg 'groggy' Lehey grog at
Fri Jul 21 03:11:35 UTC 2006

On Thursday, 20 July 2006 at 18:37:08 +1000, Peter Jeremy wrote:
> To resurrect a fairly old thread...
> On Mon, 2006-Mar-27 11:23:42 +1030, Greg 'groggy' Lehey wrote:
>> On Sunday, 26 March 2006 at 19:17:19 +1100, Peter Jeremy wrote:
>>> My work system runs separate X servers on two heads (rather than
>>> ximerama) and I have problems with windows occasionally refusing to
>>> accept focus after I move the pointer from screen to screen (though
>>> I can get an alternative window to accept focus and then switch back
>>> to the window I originally wanted).  This started after an
>>> upgrade but I'm not sure which one.
>> Interesting.  I've seen this one too: my mail window is at the left of
>> the right-hand monitor on wantadilla (:0.1).  Frequently when I move
>> from :0.0 to :0.1, the window manager will highlight the window on
>> :0.1, but focus remains with some window on :0.0.  If I move further
>> right and then back again, focus catches up with the correct window.
> I've been keeping a closer eye on my problem.  I'm using fvwm1 with
> click-to-focus and lose-focus-on-screen-switch.  If I move from one
> screen to another and quickly click on a window, the border changes
> colour to indicate that it has focus but keyboard input is ignored.
> If the target is an xterm, the cursor stays as a hollow rectangle
> instead of being filled - it looks like the WM knows that the window
> has focus but either forgets to tell the client or the client loses
> the message.  It I leave the mouse in the target window for a while
> before clicking (maybe a few hundred msec) then all works correctly.
> I wonder if some X events are being delayed and misordered.

Yes, this seems possible.  I'd say that you're describing the same
problem as I do above.

>> That's mainly irritating; the problem I describe above is annoying.
> Did you get anywhere in debugging it?

Not really.  It seems to be happening less often now.

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