Ubuntu Intrepid Installation Guide

For Catalyst 8.7 to work on Intrepid, you need to downgrade xorg from 7.4 to 7.3. Downgrading is messy business, I sure hope there is a better method than I found.

Here's the way that worked for me:

(Use "sudo", "sudo -s" or "su -" as needed. The synaptic package manager can alternatively be used for locking package versions ("holding") and other tasks).

1. Use "aptitude remove" to remove all packages that are named something with "xorg" or "x11". Take note of which packages are removed that you wish to reinstall later on. This will remove the graphical environment, so be prepared to use ctrl-alt-backspace, ctrl-alt-f1, ctrl-alt-f7 and hopefully not alt-prntscr-r,s,e,i,n,u,b.
2. If dpkg really-really refuses to remove an older fglrx-package, it might be needed to edit /var/lib/dpkg/diversions and remove a few lines.
3. In your /etc/apt/sources.list, search and replace "intrepid" with "hardy".
4. aptitude update; aptitude safe-upgrade
5. Install xorg again, this time with the hardy repositories, which makes sure you have xorg 7.3. This will take some time, grab a snack or meditate.
6. "aptitude hold" all packages named something with "xorg" or "x11"
7. Change back /etc/apt/sources.list, by replacing "hardy" with "intrepid".
8. aptitude update; aptitude safe-upgrade. Make sure to deny any attempts to upgrade xorg 7.3 to 7.4.
9. Follow the Ubuntu Hardy Installation Guide: http://wiki.cchtml.com/index.php?title=Ubuntu_Hardy_Installation_Guide
10. Add tweaks as needed: http://ge.ubuntuforums.com/showthread.php?t=849422
11. Restart X, if it doesn't work, you can often use the "vesa", "radeon" or "radeonhd" driver until it does.
12. Enter synaptic, make sure all packages with "xorg" and "x11" are locked, then update and upgrade without worries.

Done! Now run amdcccle, glxgears, warsow etc :)

-- Trontonic

Update: 8.8 is now out. I haven't tried that one yet, but the download webpage still does not mention Xorg 7.4

Update 2: 8.9 STILL does not support Xorg 7.4. Better hope for it in 8.10.