I just figured out that the Ubuntu kernel doesn't have iwlwifi debugging turned on by default, so I built a custom kernel and enabled it. I have attached the relevant output from dmesg which occurs after the microcode error.
** Attachment added: "iwlcrashlog.log" http://launchpadlibrarian.net/23256860/iwlcrashlog.log ** Bug watch added: Intel Wireless Linux Bugzilla #1917 http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1917 ** Also affects: linux via http://www.intellinuxwireless.org/bugzilla/show_bug.cgi?id=1917 Importance: Unknown Status: Unknown -- Intel WiFi 4965 has "Microcode SW Error" after 1.5gb data transfer or when display is turned off during data transfer. https://bugs.launchpad.net/bugs/336104 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs