[ubuntu] I cannot get the Ubuntu 11.10 LiveCD to boot on my HP Pavilion dv6

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http://ubuntuforums.org – I have tried everything; with no kernel boot parameters, it boots a black screen (as if the screen on my laptop was off) . With "nomodeset" and "acpi=off" it will boot an orange blinking hyphen . With "radeon.modeset=0" and "rdblacklist=radeon" it will boot to command line; X is unable to start . Ironically, I have had no problems installing Arch Linux, granted that it also booted a black screen but "nomodeset" did the trick for initial boot . My Arch Linux system now runs fine with the following drivers: xf86-video-ati, xf86-video-fbdev, xf86- (Hardware)