Pixelated screen when activating Compiz

[tammer]

I'm trying to activate compiz, and as you can see from the screenshot below, whenever I turn it on the entire screen becomes unreadable. Deactivating it returns the screen to normal. I have a Thinkpad x31, which uses an ATI Mobility Radeon M6 LY for graphics. There are no unusual errors in the compiz output, here it is:

tammer@shardene:~$ compiz
Checking for Xgl: not present.
xset q doesn't reveal the location of the log file. Using fallback /var/log/Xorg.0.log
Detected PCI ID for VGA:
Checking for texture_from_pixmap: not present.
Trying again with indirect rendering:
Checking for texture_from_pixmap: present.
Checking for non power of two support: present.
Checking for Composite extension: present.
Checking screen 1Comparing resolution (1024x768) to maximum 3D texture size (2048): Passed.
Checking for Software Rasterizer: Not present.
Checking for nVidia: not present.
Checking for FBConfig: present.
running under gnome seesion, checking for gnomecompat
Checking for Xgl: not present.


Here is my xorg.conf:

##########################################
## xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "Module"
Load "i2c"
Load "bitmap"
Load "ddc"
Load "dri"
Load "extmod"
Load "freetype"
Load "glx"
Load "int10"
Load "vbe"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "Device"
Identifier "ATI Technologies Inc Radeon Mobility M6 LY"
Busid "PCI:1:0:0"
Driver "radeon"
Option "AccelMethod" "XAA"
Option "AGPSize" "32"
Option "XAANoOffscreenPixmaps" "on"
Option "AGPMode" "4"
Option "AGPFastWrite" "on"
Option "DisableGLXRootClipping" "on"
Option "AddARGBGLXVisuals" "True"
Option "AllowGLXWithComposite" "on"
Option "EnablePageFlip" "on"
Option "RenderAccel" "True"
Option "AllowGLXWithComposite" "True"
Option "backingstore" "True"
Option "TripleBuffer" "True"
EndSection

Section "Monitor"
Identifier "Generic Monitor"
Option "DPMS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "ATI Technologies Inc Radeon Mobility M6 LY"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Depth 8
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 16
Modes "1024x768"
EndSubSection
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection

Section "DRI"
Mode 0666
EndSection

Section "Extensions"
Option "Composite" "Enable"
EndSection
#######################################

I'm running an updated Jaunty. Thanks for any assistance!

[shae]

I think I had this problem with open source ATI drivers and compiz and was never able to find a solution. Perhaps someone else will be of more help.

[tammer]

What's weird is compiz has worked well under intrepid, with the same drivers / a similar xorg.conf. I reformatted in between intrepid and jaunty, however, so I'm not sure if the problem is just because of 9.04.

I don't believe ATI's linux drivers work for this old of a chip, so I don't really have the option of switching to that.

[Rogbert]

I got mine going (on an x31 as well) by using:
http://ubuntuforums.org/showthread.p...ibm+x31+compiz
Run steps 1-8 then install compiz. There are some rendering issue, etc but overall works pretty well. Even better than in 9.04.

[tammer]

Thank you for your suggestion Rogbert, although I've been at this thread before. While I've already used this to get compiz running at 16 bit color depth, it doesn't seem worth it to get fancy effects while sacrificing millions of colors...

The issue I have is with after following those instructions (which were written for Hardy, apparently), my problem appears when switching to 24 bit depth.

I've had this problem on Jaunty, and now on a fresh install of Karmic as well.