Re: 23.0.60; Odd behavior of maximized windows

[David Abrahams <dave@boost-consulting.com>]

Jan Djärv wrote:
> 
>> Jan Djärv wrote:
>>>
>>> David Abrahams skrev:
>>>> on Sun Mar 30 2008, Jan Djärv <jan.h.d-AT-swipnet.se> wrote:
>>>>
>>>>> I also run Emerald, Gnome, Compiz and alse see Emerald crashes.  I
>>>>> don't have
>>>>> maximized Emacs:es.  But I see that sometimes compiz maximizes
>>>>> windows by
>>>>> itself when the become "too large" (exactly what that means I don't
>>>>> know).
>>>>>
>>>>> Do you have other maximized windows that don't cover the entire
>>>>> screen after a
>>>>> restart?  
>>>> Yes.
>>>>
>>>>> Window manager decorations is really up to the window manager, Emacs
>>>>> doesn't do anything about this by itself.
>>>> I figured as much, but it must be doing something differently from,
>>>> e.g., Thunderbird, or I wouldn't be seeing this effect.
>>>>
>>> I will run some tests.  I guess there is some property one should set
>>> which Emacs doesn't.  Stay tuned...
> 
> I have run several tests and killed Emerald manually, but my Emacs
> always comes back with window decorations.
> 
> When Emacs is maximized, the window manager sets _NET_WM_STATE, usually to
>  _NET_WM_STATE_MAXIMIZED_VERT, _NET_WM_STATE_MAXIMIZED_HORZ.
> 
> When it is restarted it shall look at the NET_WM_STATE and restore it as
> it was before the crash.  If WM_STATE is set to _NET_WM_STATE_FULLSCREEN
> however, you would see the behaviour you are seeing.
> 
> Can you do
> % xprop | grep NET_WM_STATE
> 
> and then click in the maximized Emacs window?  What is the output?

_NET_WM_STATE(ATOM) = _NET_WM_STATE_MAXIMIZED_VERT,
_NET_WM_STATE_MAXIMIZED_HORZ

> Do you know what version of Emerald you have?  

Here's the package info:

  Package: emerald
  Priority: optional
  Section: universe/x11
  Installed-Size: 956
  Maintainer: Ubuntu MOTU Developers <ubuntu-motu@lists.ubuntu.com>
  Original-Maintainer: Nicholas Thomas <lupine@beryl-project.org>
  Architecture: i386
  Version: 0.3~git20070717-0ubuntu1

> If you run this with for
> example Metacity, do you see the same effect?

I don't know how to duplicate the dying window decorator effect with
Metacity, so it's hard to tell you.

Thanks again for going to such lengths on this one.

-- 
Dave Abrahams
Boost Consulting
http://boost-consulting.com