http://bugzilla.opensuse.org/show_bug.cgi?id=1208239 http://bugzilla.opensuse.org/show_bug.cgi?id=1208239#c14 --- Comment #14 from Luca Bas <luciano.bastianelli56@gmail.com> --- Thanks Felix Mata. How can I exclude that is a hardware problem. For my experience It's quite tricky. For example some external monitors work when were connected to my PC. Which kind of test can I perform to exclude a hardware problem? Thanks in advance! -- You are receiving this mail because: You are the assignee for the bug.