https://bugs.launchpad.net/ubuntu/+source/linux/+bug/226279
May 31, 2008
ATI
Update – I’m know using repo drivers. Everything seems to work fine, but when switching from
TMDS1, CRT1
I need to switch to LMDS, TMDS1 and then xrandr -s 1920×1200. In this case laptop screen is fine, TMDS1 is clone and no one complains when laptop is undocked 
May 21, 2008
ATI drivers
Well, new ATI 8.4 driver is isntalled and dual screen config (both screens are external via dock) beautifully work even with the simplest xorg.conf:
Section “Device”
Identifier “aticonfig-Device[0]”
Driver “fglrx”
EndSection
Section “Screen”
Identifier “aticonfig-Screen[0]”
Device “aticonfig-Device[0]”
Monitor “aticonfig-Monitor[0]”
DefaultDepth 24
SubSection “Display”
Viewport 0 0
Depth 24
EndSubSection
EndSection
However switching from dual screen is tricky.
Issuing aticonfig –enable-monitor=lvds –effective=now crashes X.
Issuing aticonfig –enable-monitor=lvds,tmds1 –effective=now
and then aticonfig –enable-monitor=lvds –effective=now mostly works fine.
What left to do is to figure out this switching issue and fine-tune the performance…
May 18, 2008
Hardy
Well 8.04 up and running.
Remaining to install ATI 8.4 drivers and some of my work related software. In short I am as happy with it as I was with 6.10 and 7.04. 7.10 was not that successful. 8.04 is definately an improvement from 7.04…
May 15, 2008
Ubuntu 8.04 LTS
I’m in shock and awe… Just tested 8.04 from live CD and it:
a) loaded correctly (which 7.10 didn’t)
b) correctly determined 1920×1200 resolution on my monitor
c) went to sleep and back… backing up my 7.04 installation to make clean 8.04 install…