GTK Emacs and Metacity lockup

Bug #299019 reported by Noufal Ibrahim
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
emacs22 (Ubuntu)
New
Undecided
Unassigned

Bug Description

I recently upgraded my machine to 8.10 (Intrepid Ibex) and it's been working mostly okay. I am using a Thinkpad T42.

Things work fine until I use Emacs for anything. Some times (once out of every 20 times or so), when I switch focus from or to an Emacs (either a window cycle or a desktop switch), my keyboard just stops responding. My mouse moves around but can't click on anything. I can 'fix' this by switching to a virtual terminal C-A-F2 or something and switching back to X.

This problem is there with emacs-snapshot and with emacs22.

The only 'customisation' I've done which might cause this (as far as I can think) is that I edited the xkb files under /usr/share/X11/xkb/ to add a rule to map Super to my right Alt key and Alt/Meta to the left Alt key. I don't have a windows key on the laptop.

If there's any more information that might help, please let me know.

This problem exists only with the gtk versions of Emacs (emacs22 and emacs-snapshot) and only with Metacity as the WM. With compiz or any of the lighter WMs, it's not there.

This has been seen by other people as well
http://ubuntuforums.org/showthread.php?p=6058978

Revision history for this message
Joseph Coffland (jcoffland) wrote :

I don't think this is exactly a duplicate of bug #231034 which is about dragging emacs from one screen to another. It is probably related.

This error is in regards to switching focus from emacs to another app. I have this problem all the time when going from emacs to firefox on a dual monitor setup. In this case taking focus away from emacs on screen one will keep firefox from freezing on screen two. Otherwise, firefox will lockup temporarily until I move the mouse back to screen one.

This is new for me in Ubuntu 8.10 with gtk-emacs but reports indicate it is not limited to the gtk version.

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