$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)
Used to have desktop effects (10.04), now I don't (10.10) - upgraded, via update manager, yesterday (see date).
Checked - chipset is not on compiz blacklist. Is using i915 driver...
$ lsmod | grep video
video 18712 1 i915
output 1883 1 video
$ lsmod | grep i915
i915 291004 2
drm_kms_helper 30200 1 i915
drm 168054 2 i915,drm_kms_helper
intel_agp 26360 2 i915
i2c_algo_bit 5168 1 i915
video 18712 1 i915
$ dmesg | grep drm
[ 24.373104] [drm] Initialized drm 1.1.0 20060810
[ 24.627127] [drm] set up 7M of stolen space
[ 25.100789] [drm] initialized overlay support
[ 26.545217] fb0: inteldrmfb frame buffer device
[ 26.545219] drm: registered panic notifier
[ 26.545500] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
$ grep -i "Direct rendering" /var/log/Xorg.0.log
-- does not return anything
[ 28.314] (II) FBDEV(0): Creating default Display subsection in Screen section
"Default Screen Section" for depth/fbbpp 24/32
[ 28.620] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument
...... lots and lots of this - followed by:
[ 28.626] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument
[ 28.626] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument
[ 28.653] (II) AIGLX: Screen 0 is not DRI2 capable
[ 28.653] (II) AIGLX: Screen 0 is not DRI capable
Recall - under 10.4, desktop effects were enabled prior to upgrade.
Possibly due to fbdev stuff, but don't know where to look.
http://www.mail-archive.com/ubuntu-x.../msg00516.html
... this is the only major change I can think of here.
re:
http://forum.compiz.org/viewtopic.ph...11944&start=10
... compiz cannot work with fbdev ... but I see lsmod reporting that i915 is in use and i915.modeset=1 is on the kernel line.
[ 28.269] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=909ecd8f-e404-46dd-8f92-3f86149fbfcd ro i915.modeset=1 quiet splash
Don't know where to look next.
There are a large number of threads in different forums concerning this; nothing coherent discovered.