Okay, I read your edit of post. It may be because I use a VGA (DVI->VGA adapter). Because my monitor only have VGA, and graphics card only have DVI.
H: 30 - 110 kHz V: 50 - 160Hz -- EDID fail https://bugs.launchpad.net/bugs/194760 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
