There is another case that is very strange. The suspend mode is not working, either, since the kernel 4.12 upgrade onwards (in 4.11 it worked fine).
When I close the lid of my notebook with it turned on, it appears that it usually goes into suspend mode, but when I open the notebook lid again the system does not reattach, staing stuked again in a black screen, this time, it not always have a blinking cursor on top of the left side. The only way to exit this state is pressing shuttdown button til notebook being off. I read, some time ago, that for suspend mode to work fine, it was necessary to define an appropriate swap space. Well, by the way, I set the size of my swap so that it would be slightly larger than my ram memory. I also apologize for reporting these issues here, but I'm not sure how I could use the apport-bug to report these cases to the correct packages ... If you have any advice that would guide me to properly report these bugs, I would appreciate it. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1721763 Title: ubuntu is stuck with black screen and blinking cursos at top left on all shutdown or restart To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-meta/+bug/1721763/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs