# lspci
1:00.0 VGA compatible controller: ATI Technologies Inc NI Seymour [AMD Radeon HD 6470M]
A blank screen appears after messages about udev. Cannot move to other consoles by Alt-Fx. However, can "blind" log-in, run startx and X works.
Solution: append radeon.modeset=0 (or nomodeset, if this does not work) to the kernel options line in the bootloader configuration file (/boot/grub/menu.lst or /boot/grub/grub.cfg [but this file is subject to change when upgrading GRUB] for GRUB users) to disable KMS.
Ref: https://wiki.archlinux.org/index.php/Ati
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