i have tried to 'start kubuntu with safe graphics' and it didn't encounter a problem like 'just a black screen'.. then i installed kubuntu on hard drive while running in safe graphics mode.. after reboot, kubuntu loaded with no problem.. but whenever i alter the screen resolution to 1280*800, the black screen comes again and after any boot, it says 'hi' to me; i cannot escape it..
i think it could be a problem related to vertical refresh rate of the screen.. 'cause i have had a glance at the refresh rate of screen on windows vista and it is 59hz.. on kubuntu, there is no option as 59hz.. briefly, it could be a problem 'caused by monitor driver or gpu driver.. thanks for all comments.. -- HP Pavilion dv6103eu laptop - all Ubuntu versions gets frozen during X startup until I specify "noapic" boot option https://bugs.launchpad.net/bugs/89746 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs