I do System -> Preferences -> Look and Feel -> Desktop Effects and click on
Enable Desktop Effects. The Gnome window manager goes away, and then after a
while it come back with an very uninformative error message "Desktop effects
could not be enabled".
This is on a Dell Inspiron E1405 laptop with Intel 945GM running the intel X
driver. I'm running rawhide (IIRC installed from test2 live CD), with current
updates as just now, and freshly rebooted.
This *used* to work, earlier in the F8 process. (With one caveat: it wouldn't
work if I had NetBeans running.) However, it hasn't worked for a while now.
How reproducible: Always.
I too find that compiz no longer works in FC8 with the Intel X driver; it used
to work just fine in FC7. Lspci says:
00:02.0 VGA compatible controller: Intel Corporation 82865G Integrated Graphics
Controller (rev 02)
Running compiz from the comand lines gives:
compiz (core) - Fatal: GLX_EXT_texture_from_pixmap is missing
compiz (core) - Error: Failed to manage screen: 0
compiz (core) - Fatal: No manageable screens found on display :0.0
Weird, works for me on fresh installs and upgrades.. things may have been fishy
during the F8 test cycle.
Does this work with F8 final? Have you tried it out on a LiveCD?
This is on FC8 final (with current updates), with the i810 driver, and a newly
generated X config (created with system-config-display).
[I also tried the intel driver; I couldn't get DRI to work that at all :-(]
Thanks for the bug report. We have reviewed the information you have provided
above, and there is some additional information we require that will be helpful
in our diagnosis of this issue.
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 292843 [details]
xorg.conf, which prevents desktop effects from working
Created attachment 292844 [details]
Xorg.0.log matching just-attached xorg.conf
Created attachment 292845 [details]
Xorg.0.log when there is no xorf.conf - desktop effects works
I've uploaded the requested attachments.
Desktop effects *does* work when there is no xorg.conf.
There is one annoyance: When desktop effects is enabled, I can't drag windows
between workspaces in the workspace switcher. Is this a known problem?
The other annoyance is that without the xorg.conf I cannot do "multi-screen"
(cinerama?) with the workspace across both my laptop screen and an external
$ xrandr --output LVDS --auto --output VGA --auto --right-of LVDS
xrandr: screen cannot be larger than 1920x1920 (desired size 3360x1200)
OK, to untangle your last comment:
a) moving between workspaces is a matter of huge discussion in bug 200292
b) problems with xrandr are most likely duplicate of bug 387691. See bug 387691
comment 8. Now it is getting complicated, because you need /etc/X11/xorg.conf to
add Virtual there. To create a xorg.conf corresponding to the current
configuration in X w/o any xorg.conf, browse through /var/log/Xorg.0.log and it
is there. Cut it out with a text editor and save it as /etc/X11/xorg.conf. Then
follow the steps in the above-mentioned bug.
Does it help?
Created attachment 292899 [details]
xorg.conf based on log, plus Virtual
Thanks for the response. As suggested, I created an xorg.conf based on the
default printed out in the Xorg.0.log. and then added a Virtual command.
See attachment "xorg.conf based on log, plus Virtual".
If the "Virtual" command is commented out (as shown in the attachment), then I
can enable Desktop Effects, but I can't do dualhead.
If I enable the Virtual command (by removing the comment character), I can do
dualhead, but I can't enable Desktop effects.
Maybe my 945GM chip is just too wimpy to support both desktop effects and the
large virtual screen at the same time? No big deal (the desktop effects are
amusing, but terribly useful). (For that matter I don't really care much about
dualhead as long as I can cleanly switch between the external and internal
displays, which finally in F8 works reliably.) However, it would be friendlier
if there were some more helpful message explaining *why* desktop effects
couldn't be enabled,
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