For different kernel on http://kernel.ubuntu.com/~kernel-ppa/mainline/ and test on Ubuntu 14.04.1. All version below 4.2 works fine for S4, the kernel of 4.2, 4.3, 4.3 can't works for S4.
The 4.1 and 4.2 dmesg was attach. ** Attachment added: "4.2.dmesg" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718871/+attachment/4978137/+files/4.2.dmesg -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1718871 Title: s4 get Error taking CPU down -34 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1718871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs