I installed the kernel "linux-image-4.2.0-040200rc7-generic_4.2.0-040200rc7.201508162030_i386.deb" as Joseph Salisbury (jsalisbury) told. The deb file is downloaded from http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.2-rc7-unstable/ . I have booted without any problems and the kernel is:
uname -r 4.2.0-040200rc7-generic I have marked the status as Confirmed. I will test issue . Thank you so much for your concern. ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1486746 Title: ubuntu 15.04 after screen lock, laptop cant wake up and black screen seen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1486746/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs