Public bug reported:
We found that the following lines are present in the /etc/X11/xorg.conf
file on the LiveCD:
BusID "PCI:0:0:5"
UseFBDev "true"
This causes the X startup to fail with an FBIOPUT_VSCREENINFO "invalid
argument" property. Removing BOTH of them allows "startx" to bring up
the installer.
There is no good reason to specify the BusID if there is only one card,
the radeon driver and X.org can adequately find the card it wants.
UseFBDev is disabled by default in X.org 7.1 as far as I am aware; there
is also no good reason to use it (all the drivers work just fine in
cooperation with the framebuffer console anyway)
This is in addition to cards on the Pegasos AGP board not being
detected. I used a single PCI Radeon 7000 for this test, with no other
PCI devices attached.
** Affects: xorg-server (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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X configuration is broken on Edgy LiveCD running on Pegasos
https://launchpad.net/bugs/68632
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