I got them running, although I needed to do `aticonfig --initial -f' otherwise X would start (maybe this was also the reason I couldn't get 8.10 working... didn't try to force an initial config back then).
Anyway it works. Some impressions:
- starting Blender still makes my top and bottom panels go black
- tried to enable visual effects in Ubuntu 8.04 (I always have them disabled), but this cleared my desktop (except wallpaper) and my mousecursor turned in a clock thingy, but nothing happened (any way I can try to enable this in a configuration file or so?)
- glxgears doesn't give any strange errors anymore when shutting it down
- (probably) same problem as 8.10: a dual-head configuration causes X not to start (in fact system hangs completely, cannot drop to shell with Ctrl-Alt-F1).
- using `aticonfig --initial -f' works (causes second screen to be a copy of the first screen), when applying `aticonfig --initial=dual-head' this works too, I can even restart X with Ctrl-Alt-Backspace, but when I restart the system, my screens stay black (and I cannot get into a shell).
For me, this probably means going back to 8.9 (as 8.10 had this problem too).
btw: using Ubuntu 8.04.1
I tried the same approach on 8.10 to see if it really was the same problem, did:
dpkg -P fglrx-amdcccle
dpkg -P xorg-driver-fglrx
dpkg -P fglrx-kernel-source
./ati-driver-installer-8-10-x86.x86_64.run --buildpkg Ubuntu/hardy
dpkg -i fglrx-kernel-source_8.542-0ubuntu1_amd64.deb
dpkg -i xorg-driver-fglrx_8.542-0ubuntu1_amd64.deb
dpkg -i fglrx-amdcccle_8.542-0ubuntu1_amd64.deb
aticonfig --initial -f
X started (never had accomplished that before with 8.10)
logged in, opened terminal:
logged out, dual head worked nicely
logged in, logged out
did Ctrl-Alt-Backspace, dual head still worked
reboot, dual head still worked (tried this a few times)
So... very strange, it seemed to work with 8.10. So I decided to try the same approach on 8.11 (before I used the graphical installer). Followed exactly the same steps as above, except that I had some complaints when I tried installing the fglrx-kernel-source that it already existed or so. So before installing them I did:
dpkg -r fglrx-kernel-source
Thereafter it installed without complaints.
Rebooted a few times with dual-head already enabled and so far X started every time.
Not sure what causes this, but for now it seems to work again.
I think I found the source of the problems:
Dual-head works perfectly fine with 8.10 and 8.11, as long as I don't touch the underscan/overscan option and I don't change the size of the image on my tv. Because my tv has a Pal-B standard, I changed it to that after installation. This works fine. But then I see black borders in the top and bottom of my tv screen (have an old CRT 4:3 tv, I use 1024x768 with 60Hz resolution). Everything works fine, but if I change the size settings of the tv-screen in the catalyst control center, X does not start anymore when I restart my computer (I see my tv blinking a few times but both screens stay black).