Bug 242663

Same problem here since fc6 (and now in f7 also):

compiz-0.3.6-8.fc7
kmod-nvidia-1.0.9762-1.2.6.21_1.3194.fc7

07:00.0 VGA compatible controller: nVidia Corporation G70 [GeForce 7600 GS] (rev a1)

Disabling desktop effects and then enabling them again shows the title bars again.

Same problem with my intel 915GM laptop.

Wobbly windows works great when enabled. log out - log in: missing windows. Turn
desktop effects off and metacity decorations reappear, turn desktop effects back
on and the windows wobble. Decorations disappear at next login.

From ~/.xsession-errors:

compiz: No stencil buffer. Clipping of transformed windows is not going to be
correct when screen is transformed.
compiz: Screen 0 on display ":0.0" already has a window manager; try using the
--replace option to replace the current window manager.
compiz: No manageable screens found on display :0.0

Same problem here. But I traced it to gtk-windows-decorator producing output.
When I select a theme that does not support all features gt-window-decorator
generates output stating that it ignores certain things. This can be observer if
gtk-windows-decorator is started by hand. If an output terminal is present
(current shell or nohup output file) it works perfectly. But on logging in, when
no output device is present it fails.

This could also be related to bug #243515

I get the following error messages in .xsession-errors. Some process is doing
something nasty here (btw, 3465 is compiz itself)...

[nolte@localhost ~]$ cat .xsession-errors 
localuser:nolte being added to access control list
SESSION_MANAGER=local/localhost.localdomain:/tmp/.ICE-unix/3221
Initializing nautilus-search-tool extension
Initializing nautilus-image-converter extension
Initializing nautilus-open-terminal extension

(process:3465): GLib-WARNING **: GError set over the top of a previous GError or
uninitialized memory.
This indicates a bug in someone's code. You must ensure an error is NULL before
it's set.
The overwriting error message was: File not found
compiz: Failed to load slide: fedora-logo

(process:3465): GLib-WARNING **: GError set over the top of a previous GError or
uninitialized memory.
This indicates a bug in someone's code. You must ensure an error is NULL before
it's set.
The overwriting error message was: File not found
compiz: Failed to load slide: /usr/share/pixmaps/fedora-logo
Loading "installonlyn" plugin
warning: /etc/pam.d/system-auth created as /etc/pam.d/system-auth.rpmnew
[nolte@localhost ~]$ pgrep 3465
[nolte@localhost ~]$ ps ax | grep 3465
 3465 ?        S      0:02 compiz --replace gconf
 4173 pts/0    R+     0:00 grep 3465

Reporter and Christian, please attach your X server config file 
(/etc/X11/xorg.conf) and X server log file (/var/log/Xorg.*.log) to the bug 
report as individual uncompressed file attachments using the bugzilla file 
attachment link below.

Could you please also try to run without any /etc/X11/xorg.conf whatsoever and 
let X11 autodetect your display and video card? Attach to this 
bug /var/log/Xorg.0.log from this attempt as well, please.

We will review this issue again once you've had a chance to attach this 
information.

Thanks in advance.

Created attachment 244231 [details]
xorg.conf

Created attachment 244251 [details]
Xorg.0.log (using the current nvidia driver)

Created attachment 244261 [details]
Xorg.0.log (autodetected)

Problem still persists with F8:

[nolte@ravine ~]$ rpm -qa | grep nvidia
kmod-nvidia-2.6.23.1-42.fc8-100.14.19-17.lvn8
xorg-x11-drv-nvidia-100.14.19-4.lvn8

Just encountered on a Macbook.  Would attaching any files help?

Richard, try to follow the information in comment 5, please.

Created attachment 284391 [details]
Xorg.0.log for Macbook

I'll note that all the lines starting with "(II) intel(0): " and the last one
with "(II) XAA: " only appear after Desktop Effects have been successfully
enabled.  In the case where I logged in and window borders were absent, those
lines did not appear in the Xorg.0.conf

Created attachment 284401 [details]
xorg.conf for Macbook

The only customisations to this xorg.conf were for the touchpad, so that the
cursor would travel at a decent speed.

Created attachment 284411 [details]
.xsession-errors for Macbook

Here is the .xsession-errors file for the session that begins with Desktop
Effects failing, followed by me manually turning it on.   From the beginning up
through the four nautilus warnings is after the failed Desktop Effects start. 
Everything from the line starting with "compiz (video)" on comes after I
manually start them.  

I wonder why compiz thinks that "GLX_EXT_texture_from_pixmap is missing" when
it shouldn't be.  GLXinfo reports it, and Desktop Effects always works as long
as I'm not trying to restore a GNOME session.

Created attachment 293490 [details]
xorg.conf

Created attachment 293491 [details]
Xorg.0.log

Created attachment 293493 [details]
Xorg.0.log without xorg.conf

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