This appears to have been resolved with more recent kernels, or revisions of the firmware on the routers where I was having issue. Since I don't control the router, it's a bit hard to tell. So I'm closing this as fixed released for now.
** Changed in: linux (Ubuntu Trusty) Status: In Progress => Fix Released ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- 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/1333487 Title: [ASUS ZENBOOK UX32VD] Wifi failure to connect regression. Status in linux package in Ubuntu: Fix Released Status in linux source package in Trusty: Fix Released Bug description: 3.13.0-29-generic works 3.13.0-30 results in the following errors Jun 23 20:53:15 colt kernel: [ 5.862854] iwlwifi 0000:03:00.0: L1 Disabled; Enabling L0S Jun 23 20:53:15 colt kernel: [ 5.869441] iwlwifi 0000:03:00.0: Radio type=0x2-0x1-0x0 Jun 23 20:53:15 colt kernel: [ 5.967202] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready Jun 23 20:53:15 colt kernel: [ 5.967478] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready Jun 23 20:53:15 colt kernel: [ 5.972410] ip6_tables: (C) 2000-2006 Netfilter Core Team Jun 23 20:53:15 colt kernel: [ 6.644363] Bridge firewalling registered Jun 23 20:53:16 colt kernel: [ 6.816877] nf_conntrack version 0.5.0 (16384 buckets, 65536 max) Jun 23 20:53:16 colt kernel: [ 6.865773] IPv6: ADDRCONF(NETDEV_UP): virbr0: link is not ready Jun 23 20:53:18 colt kernel: [ 9.196680] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:18 colt kernel: [ 9.201356] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:18 colt kernel: [ 9.305248] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 2/3) Jun 23 20:53:18 colt kernel: [ 9.307338] wlan0: authenticated Jun 23 20:53:18 colt kernel: [ 9.307545] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:53:21 colt kernel: [ 12.654570] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:21 colt kernel: [ 12.656770] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:21 colt kernel: [ 12.659369] wlan0: authenticated Jun 23 20:53:21 colt kernel: [ 12.659583] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:53:25 colt kernel: [ 16.446479] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:25 colt kernel: [ 16.449055] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:25 colt kernel: [ 16.451708] wlan0: authenticated Jun 23 20:53:25 colt kernel: [ 16.451816] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:53:30 colt kernel: [ 20.751118] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:30 colt kernel: [ 20.753892] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:30 colt kernel: [ 20.756151] wlan0: authenticated Jun 23 20:53:30 colt kernel: [ 20.756311] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:53:46 colt kernel: [ 37.251795] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:46 colt kernel: [ 37.254521] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:46 colt kernel: [ 37.256537] wlan0: authenticated Jun 23 20:53:46 colt kernel: [ 37.256922] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:53:59 colt kernel: [ 50.574868] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:53:59 colt kernel: [ 50.577201] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:53:59 colt kernel: [ 50.579460] wlan0: authenticated Jun 23 20:53:59 colt kernel: [ 50.579761] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:54:11 colt kernel: [ 62.361021] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:54:11 colt kernel: [ 62.363445] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:54:11 colt kernel: [ 62.366190] wlan0: authenticated Jun 23 20:54:11 colt kernel: [ 62.366336] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:54:24 colt kernel: [ 75.684454] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:54:24 colt kernel: [ 75.686745] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:54:24 colt kernel: [ 75.692039] wlan0: authenticated Jun 23 20:54:24 colt kernel: [ 75.692169] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:54:36 colt kernel: [ 87.367947] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:54:36 colt kernel: [ 87.370284] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) Jun 23 20:54:36 colt kernel: [ 87.372230] wlan0: authenticated Jun 23 20:54:36 colt kernel: [ 87.372356] wlan0: waiting for beacon from 94:0c:6d:fe:2e:d6 Jun 23 20:54:49 colt kernel: [ 100.691218] wlan0: authenticate with 94:0c:6d:fe:2e:d6 Jun 23 20:54:49 colt kernel: [ 100.693585] wlan0: send auth to 94:0c:6d:fe:2e:d6 (try 1/3) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-30-generic 3.13.0-30.54 ProcVersionSignature: Ubuntu 3.13.0-30.54-generic 3.13.11.2 Uname: Linux 3.13.0-30-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chiluk 2171 F.... pulseaudio CurrentDesktop: Unity Date: Mon Jun 23 20:58:34 2014 InstallationDate: Installed on 2014-01-07 (167 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Alpha amd64 (20140106) MachineType: ASUSTeK COMPUTER INC. UX32VD ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-30-generic.efi.signed root=UUID=292a06f6-464a-49e4-a244-2c2d668f33b7 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-30-generic N/A linux-backports-modules-3.13.0-30-generic N/A linux-firmware 1.127.3 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/29/2013 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: UX32VD.214 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: UX32VD dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrUX32VD.214:bd01/29/2013:svnASUSTeKCOMPUTERINC.:pnUX32VD:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnUX32VD:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: UX32VD dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. 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