I'm having the same problem using the Kubuntu Intrepid RC1 Installation CD. The (k)ubuntu installer fails to launch (even when vesa safe graphics mode is selected), and I am presented with a black screen (with a blinking cursor).
Switching to a terminal and executing startx yields:
(EE) No device detected.
Fatal server error:
No screens found.
I'm having the same problem using the Kubuntu Intrepid RC1 Installation CD. The (k)ubuntu installer fails to launch (even when vesa safe graphics mode is selected), and I am presented with a black screen (with a blinking cursor).
Switching to a terminal and executing startx yields:
(EE) No device detected.
Fatal server error:
No screens found.
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System specs:
AMD Phenom X4 9550
AMD 780G Northbridge (Radeon 3200 IGP)
Radeon 3650 Graphics Card
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Looking at the Xorg log file (attached), the problem seems to be similar to that described by Jean-Baptiste Lallement.
Because this behavior severely affects ubuntu's installation process, it should (IMO) be fixed before release.