I seem to have the same problem also on a Dell XPS 13 (2015) but with A03 BIOS. Currently running Kubuntu 15.04, Kernel 3.19.0-24-generic. Only I have the kernel panic 100% of the time when suspending from KDE either by closing the lid or from the KDE menu.
But I've found a tempory workaround. I've made a program starter with the following command line: qdbus org.freedesktop.ScreenSaver /ScreenSaver Lock ; sudo pm-suspend and put the following file into /etc/sudoers.d: mb@rhea:~$ cat /etc/sudoers.d/pm-suspend Cmnd_Alias SUSPEND = /usr/sbin/pm-suspend %sudo ALL = NOPASSWD: SUSPEND This locks the screen and goes into suspend flawlessly. So it must be something about the way KDE does suspend. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1468788 Title: Kernel panic on suspend/shutdown To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1468788/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
