[Bug 1002453] Re: Firefox Screen Freeze

[Ian! D. Allen]

This just started happening to me in Ubuntu 15.04 with Firefox 42.0, but
only if I run Firefox under the old vtwm window manager:

Firefox 42.0 "Mozilla Firefox for Ubuntu" canonical - 1.0 under Ubuntu
15.04.

The browser now (in the past week or two) locks up when requested to
enter Full Screen if not running under any window manager (or when
running under an old window manager such as vtwm that doesn't have all
the modern hooks).

Reproduce:

1. Start up Ubuntu 15.04 with the full Unity desktop installed.
2. Clean out (remove or rename) $HOME/.mozilla to start clean.
3. Open Firefox.
4. Note that using F11 correctly resizes Firefox to Full Screen and back down.
5. Kill the window manager: run: initctl stop unity7
6. Return to Firefox and try F11 or turn on "Full Screen" from the menu.
7. Browser locks up.

Changing tabs doesn't refresh the screen unless you do something to
trigger an X11 refresh such as opening a menu.  F11 does *not* undo the
damage - the browser stays locked up.  Using the Firefox menu to disable
(un-check) "Full Screen" also does nothing.  Nothing works.

8. Start an old window manager such as "vtwm".  No change.  Firefox is
still locked up.
9. Exit vtwm.
10. Re-start the Unity window manager: run: initctl start unity7
11. Return to Firefox and use F11 or the menu "Full Screen" a few times and Firefox is working again.
12. Repeat as needed. 

** Summary changed:

- Firefox Screen Freeze
+ Firefox Screen Freeze in Full Screen mode

-- 
You received this bug notification because you are a member of Mozilla
Bugs, which is subscribed to firefox in Ubuntu.
https://bugs.launchpad.net/bugs/1002453

Title:
  Firefox Screen Freeze in Full Screen mode

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1002453/+subscriptions