I was running kubuntu 10.10 with ati drivers (11-5). For some problems, i re-installed ati-drivers to install lastest version (11-6) but before install the new driver I reinstalled Fglrx as described here then rebooted. Now when I start my computer it boots up and later show kubuntu progress bar then fade off with random colors and goes black completely.
How can I fix this without needing to reinstall the whole system?