Ubuntu is running in low-graphic mode
Your screen and graphics card could not be detected correctly. To use higher resolutions, visual effects or multiple screens, you have to configure the display yourself.
Problems with the video card and its drivers
This is solved for Cassandra (and Ubuntu 7.0.4) as "Safe graphics mode" now works as it should!
The boot process goes on for a while, you probably see some garbled image on you screen and shortly thereafter you (probably) hear a little sound, but the boot ends with a blank screen This is due to the Xserver not being started, and here follows a solution to that. It is unfortunate that so popular video cards as nVidia 6600 & 8800 (all versions) and some popular ATI cards have this problem.
The reason for it is that the Live CD is using the wrong graphics drivers. When the live CD starts up press F6 and delete the "quiet splash --" ending and type in "break=bottom", then boot with this. If you end up in a "busy box" or so, reboot and type in "break=top" instead.
One member of the forum reported that "break=button" helped - this is really absurd, but worth mentioning.
This will get rid of the Mint/Ubuntu splash screen and stop half way through booting with a command prompt (ignore any error messages for now). This is caused by a bug that discards the setting "Safe graphics mode" (which is vesa) if the card is recognized - in the case of nvidia the driver vesa is replaced with "nv" when X starts.
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