Comment 5 for bug 304588

Forwarding this bug from a Ubuntu reporter:
https://bugs.edge.launchpad.net/ubuntu/+source/xserver-xorg-video-ati/+bug/304588

[Problem]
When starting up X, nothing is displayed to the screen in Intrepid (-ati 6.8.0, xserver 1.5.2); with Hardy (-ati 6.9.0; xserver 1.4.0.90) it had been working properly.

[Discussion]
Comparing the Xorg.0.log's from Hardy and Intrepid, there are some slight differences in how the modelines are generated, and also a message about "Indeterminate output size" but nothing screaming out "error".

This difference does look curious, but I'm not sure what it means:
 (II) RADEON(0): Port1:
  Monitor -- AUTO
  Connector -- VGA
- DAC Type -- Primary
+ DAC Type -- TVDAC/ExtDAC
  TMDS Type -- None
  DDC Type -- 0x6c

[lspci]
01:03.0 VGA compatible controller [0300]: ATI Technologies Inc ES1000 [1002:515e] (rev 02)
 Subsystem: Hewlett-Packard Company Device [103c:31fb]

[Original Report]
When attempting an install of Intrepid Ibex (8.10) using the amd64 desktop install CD on an HP dl380g5, the installer goes through the ping-pong stage, then the progress bar loads completely, then nothing is displayed. I've gone back and tried the Hardy Heron (8.04.1) amd64 desktop install CD and it works fine, so this is a regression.

I'll be attaching the Xorg.0.log files from both intrepid and hardy to this bug. Also, I can boot the Intrepid installer using the safe graphics mode and that works for an install.