Darren Peets, the next step is to fully commit bisect from kernel 3.16 to 3.19 in order to identify the last good kernel commit, followed immediately by the first bad one. This will allow for a more expedited analysis of the root cause of your issue. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ?
Please note, finding adjacent kernel versions is not fully commit bisecting. Thank you for your understanding. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Tags added: kernel-bug-exists-upstream-4.0-rc5 needs-bisect regression-release ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1436891 Title: Cannot connect to any WiFi access point which runs wireless-N Status in linux package in Ubuntu: Incomplete Bug description: When attempting to connect to a WiFi access point with N wireless, two popup messages appear: Connection 'SSID' deactivated. The WiFi network could not be found Expected behaviour: Connects to network. Minimal demonstration: connect to a WiFi access point by both LAN and WiFi B/G. Log in to access point, change it to B/G/N. Connection is lost, cannot be re-established until reverted to B/G. Previous troubleshooting located here: https://www.kubuntuforums.net/showthread.php?67556-Can-t-use-wifi Description: Ubuntu Vivid Vervet (development branch) Release: 15.04 linux-firmware 1.143 Can connect normally (with N) from 14.04.2 and 14.10 live CDs. Can connect in 15.04 if and only if N deactivated in access point. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: linux-firmware 1.143 ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2 Uname: Linux 3.19.0-10-generic x86_64 ApportVersion: 2.16.2-0ubuntu4 Architecture: amd64 CurrentDesktop: KDE Date: Fri Mar 27 00:14:58 2015 Dependencies: InstallationDate: Installed on 2015-03-04 (22 days ago) InstallationMedia: Kubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150224.1) PackageArchitecture: all SourcePackage: linux-firmware UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1436891/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp