OK, testing on the most recent mainstream kernel, 4.5.0, is now complete. The Ubuntu and kernel version:
$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily $ uname -a Linux tundra 4.5.0-040500-generic #201603140130 SMP Mon Mar 14 05:32:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux The bug is partially fixed, and partially present: - The reset loops still occur intermittently when the device is connected. - However, unplugging the device during a reset loop no longer causes a kernel panic or hang. (There isn't any observable "action that happens instead"; the device stops resetting but that isn't surprising, given that it's no longer physically connected to the computer.) I have used both fixed-upstream and exists-upstream tags because there is still a bug with recognising the device upstream, but the worst symptom (the panic) appears to have been fixed, leaving only a more minor symptom. (This is the same behaviour that I observed when running Ubuntu Vivid.) If this is incorrect, feel free to correct the tags. The syslog from this boot, on which I plugged and unplugged the device repeatedly, is attached. ** Attachment added: "syslog for repeated connection and disconnection on a mainstream kernel" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1556471/+attachment/4600707/+files/syslog ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed ** Tags added: kernel-fixed-upstream kernel-fixed-upstream-3.5 ** Tags added: kernel-bug-exists-upstream kernel-bug-exists-upstream-3.5 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1556471 Title: Connecting an Osprey 2 Mini (USB cellular wireless router) sometimes causes an endless reset loop or a kernel panic To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1556471/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
