Nitzan Raz, the next step is to fully reverse commit bisect from kernel 3.19 to 4.1-rc3 in order to identify the last bad commit, followed immediately by the first good one. Once this commit has been identified, then it may be reviewed as a candidate for backporting into your release. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection#How_do_I_reverse_bisect_the_upstream_kernel.3F ?
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 ** Description changed: After upgrading to Ubuntu 15.04, wifi connections fail (not sure about the router configuration that causes connections to fail). Seems like regression from 14.10 (my wifi tethering from my Android used to work, but now it doesn't). I have a Lenovo Y50, chipset Intel 3160. nitz@ship:~$ modinfo iwlwifi | grep 3160 firmware: iwlwifi-3160-10.ucode Tried using versions 12 / 7 of the driver as suggested here (http://askubuntu.com/questions/611222/cannot-connect-to-wifi-intel- corporation-wireless-3160), no avail. From syslog when trying to connect with netowrk-manager: May 11 09:36:51 ship kernel: [ 2463.891571] wlan0: send auth to 02:1a:11:f3:7a:ac (try 1/3) May 11 09:36:51 ship kernel: [ 2463.952544] wlan0: send auth to 02:1a:11:f3:7a:ac (try 2/3) May 11 09:36:52 ship kernel: [ 2464.026345] wlan0: send auth to 02:1a:11:f3:7a:ac (try 3/3) May 11 09:36:52 ship kernel: [ 2464.122796] wlan0: authentication with 02:1a:11:f3:7a:ac timed out when running wpa_supplicant with debug (-dd): wlan0: State: SCANNING -> AUTHENTICATING EAPOL: External notification - EAP success=0 EAPOL: External notification - EAP fail=0 EAPOL: External notification - portControl=Auto nl80211: Authenticate (ifindex=4) - * bssid=02:1a:11:f3:7a:ac - * freq=2437 - * SSID - hexdump_ascii(len=7): - 56 69 72 75 73 41 50 VirusAP - * IEs - hexdump(len=0): [NULL] - * Auth Type 0 + * bssid=02:1a:11:f3:7a:ac + * freq=2437 + * SSID - hexdump_ascii(len=7): + 56 69 72 75 73 41 50 VirusAP + * IEs - hexdump(len=0): [NULL] + * Auth Type 0 nl80211: Authentication request send successfully nl80211: Drv Event 19 (NL80211_CMD_NEW_STATION) received for wlan0 nl80211: New station 02:1a:11:f3:7a:ac nl80211: Drv Event 20 (NL80211_CMD_DEL_STATION) received for wlan0 nl80211: Delete station 02:1a:11:f3:7a:ac nl80211: Drv Event 37 (NL80211_CMD_AUTHENTICATE) received for wlan0 nl80211: MLME event 37; timeout with 02:1a:11:f3:7a:ac wlan0: Event AUTH_TIMED_OUT (14) received wlan0: SME: Authentication timed out - ProblemType: Bug - DistroRelease: Ubuntu 15.04 - Package: linux-firmware 1.143 [modified: lib/firmware/iwlwifi-3160-10.ucode] - ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 - Uname: Linux 3.19.0-16-generic x86_64 - NonfreeKernelModules: nvidia - ApportVersion: 2.17.2-0ubuntu1 - Architecture: amd64 - CurrentDesktop: Unity - Date: Mon May 11 10:08:52 2015 - Dependencies: - - InstallationDate: Installed on 2014-11-05 (186 days ago) - InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1) - PackageArchitecture: all - SourcePackage: linux-firmware - UpgradeStatus: Upgraded to vivid on 2015-05-03 (7 days ago) - --- + --- ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC1: ubuntu 2117 F.... pulseaudio - /dev/snd/controlC0: ubuntu 2117 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC1: ubuntu 2117 F.... pulseaudio + /dev/snd/controlC0: ubuntu 2117 F.... pulseaudio CasperVersion: 1.360 CurrentDesktop: Unity DistroRelease: Ubuntu 15.04 LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: LENOVO 20378 Package: linux (not installed) ProcEnviron: - TERM=xterm - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash --- ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 RelatedPackageVersions: - linux-restricted-modules-3.19.0-15-generic N/A - linux-backports-modules-3.19.0-15-generic N/A - linux-firmware 1.143 + linux-restricted-modules-3.19.0-15-generic N/A + linux-backports-modules-3.19.0-15-generic N/A + linux-firmware 1.143 Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-15-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/11/2015 dmi.bios.vendor: LENOVO dmi.bios.version: 9ECN37WW(V2.01) dmi.board.asset.tag: 31900058WIN dmi.board.name: Lenovo Y50-70 dmi.board.vendor: LENOVO dmi.board.version: 31900058WIN dmi.chassis.asset.tag: 31900058WIN dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo Y50-70 dmi.modalias: dmi:bvnLENOVO:bvr9ECN37WW(V2.01):bd02/11/2015:svnLENOVO:pn20378:pvrLenovoY50-70:rvnLENOVO:rnLenovoY50-70:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoY50-70: dmi.product.name: 20378 dmi.product.version: Lenovo Y50-70 dmi.sys.vendor: LENOVO ** Tags added: latest-bios-2.01 needs-reverse-bisect -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1453701 Title: Wifi authentication times out immediately To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1453701/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
