It seems this bug is fixed in the mainline kernel, since I installed Kernel 4.15, the problem did not reappear again.
** Tags added: kernel-fixed-upstream -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1745814 Title: Kubuntu crashes repeatedly without error notices To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1745814/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
