I've found that I experience the bug when I connect via NetworkManager, but if I shut off NetworkManager and invoke wpa_supplicant directly, the problem does not occur! So somehow it has to do with NetworkManager's use of wpa_supplicant.
** Also affects: network-manager (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to wpa in Ubuntu. https://bugs.launchpad.net/bugs/1527319 Title: Ubuntu 15.10 wifi disconnects WPA2-Enterprise connections Status in network-manager package in Ubuntu: New Status in wpa package in Ubuntu: New Bug description: When connected to WPA2-Enterprise networks, connection will randomly drop. Happens only on WPA2-Enterprise, not Personal, and only in 15.10 (was fine in previous versions of ubuntu.) ProblemType: Bug DistroRelease: Ubuntu 15.10 Package: wpasupplicant 2.4-0ubuntu3.2 ProcVersionSignature: Ubuntu 4.2.0-21.25-generic 4.2.6 Uname: Linux 4.2.0-21-generic x86_64 ApportVersion: 2.19.1-0ubuntu5 Architecture: amd64 CurrentDesktop: Unity Date: Thu Dec 17 08:21:21 2015 InstallationDate: Installed on 2014-04-04 (621 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Beta amd64 (20140326) SourcePackage: wpa UpgradeStatus: Upgraded to wily on 2015-11-15 (31 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1527319/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp