Mac Forum / Applications / Mac Applications / July 2008

Under Leopard, I'm seeing a behavior with X11 that didn't manifest
under Tiger.  Periodically, the input focus will leave my current X11
window without my doing anything to cause it.

I recent installed Leopard (from Tiger via Archive and Install).
I use X11 a lot and have long had it set to focus-follows-mouse.

Usually when the focus leaves by itself, it returns by itself in
roughly a third of a second, though sometimes it doesn't returns until
I click on the window I was using.  If I happen to be typing during a
brief focus glitch, I can lose a few keystrokes that happened while
focus was gone.

When the focus disappears and doesn't return, I don't see window with
the focus (none of the three dots in the upper left show color), but
X11 is still the application showing in the menubar.  Hitting cmd-tab
twice brings the focus back to the window I'm using (by selecting some
other app and then reselecting X11), so it seems that that X11 window
was nominally still the "current" one despite losing focus.

This seems to happen at the same times every day, such as at 48 mins
and 48 seconds past every hour (or at least many hours) as well as at
other times.  I have a few reminders in iCal but none of them happen
*every* hour -- they're all once a day or once a week.  None of them
are scheduled for 48 or 49 minutes after the hour.

Anyone else seen such focus glitches in X11 under Leopard?

I'm running 10.5.3 on a dual 1.42 GHz G4 and using the X11 that came
with Leopard.  (I installed Leopard and immediatetly installed the
10.5.3 combo update via Software Update.)

Martin