First, I have to mention that after additional testing I found that the ab1304b986468e3ef698ec4e1cb1a3d4ba080811 commit actually does work, but for some unknown reason I have to turn off the wifi adapter and turn it back on after the computer starts.
The commit after that (d88c8958dc13b4e4eb7fc57e3f06dc1c4abc7b1f), which increases the acceptable firmware API to 10, is actually where the problem occurs. This prompted me to look into the firmware itself more. I booted into the 3.19.0-13.13 generic and did the following: sudo mv /lib/firmware/iwlwifi-3160-12.ucode /lib/firmware/backup-iwlwifi-3160-12.ucode sudo mv /lib/firmware/iwlwifi-3160-10.ucode /lib/firmware/backup-iwlwifi-3160-10.ucode Then I rebooted. I am now using the wifi on the Ubuntu 3.19.0-13.13 kernel, albeit with the older firmware (version 9). Dmesg confirms that moving these firmware files made the iwlwifi driver fallback to the earlier version: # dmesg | grep iwlwifi [ 6.856144] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-3160-12.ucode failed with error -2 [ 6.856208] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-3160-11.ucode failed with error -2 [ 6.856217] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-3160-10.ucode failed with error -2 [ 6.856219] iwlwifi 0000:08:00.0: request for firmware file 'iwlwifi-3160-10.ucode' failed. [ 6.861495] iwlwifi 0000:08:00.0: Firmware has old API version, expected v10 through v12, got v9. [ 6.861499] iwlwifi 0000:08:00.0: New firmware can be obtained from http://www.intellinuxwireless.org/. [ 6.861664] iwlwifi 0000:08:00.0: loaded firmware version 25.228.9.0 op_mode iwlmvm [ 6.899533] iwlwifi 0000:08:00.0: Detected Intel(R) Dual Band Wireless AC 3160, REV=0x164 [ 6.899677] iwlwifi 0000:08:00.0: L1 Enabled - LTR Disabled [ 6.899923] iwlwifi 0000:08:00.0: L1 Enabled - LTR Disabled [ 7.323877] iwlwifi 0000:08:00.0: L1 Enabled - LTR Disabled [ 7.324167] iwlwifi 0000:08:00.0: L1 Enabled - LTR Disabled This is an OK workaround, but clearly something is up here because I am able to use the newest firmware on other distributions (Arch for instance). -- 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/1442411 Title: Intel 3160 wireless card no longer able to connect to wifi networks Status in linux package in Ubuntu: Incomplete Bug description: Laptop: Lenovo Y70 Touch Wireless Card: Intel Corporation Wireless 3160 (rev 93) When running Ubuntu Gnome 14.10 (on a live USB drive) I am able to connect to wifi networks without any issue. When running Ubuntu Gnome 15.04 (either on live USB or installed and fully updated) I am able to see the list of available wifi networks, but not able to connect. Selecting one and entering the password makes the network manager applet indicate that it is "Connecting..." but then it gives up after about a minute or so and reverts back to "Not Connected". I have tested this without network encryption as well, and the same result occurs. I have ran a wifi debugging script, here is the output: For Ubuntu 14.10 - http://pastebin.com/aLUhTyrM For Ubuntu 15.04 - http://pastebin.com/f0yRjQUC Again, the card seems to work perfectly on 14.10, but is unable to connect to any networks on 15.04. I haven't completely narrowed this down to the firmware, however that is the most prominent difference (aside from the kernel itself) that I notice in the above files (14.10 uses iwlwifi-3160-9.ucode, while 15.04 uses iwlwifi-3160-10.ucode). --- ApportVersion: 2.17-0ubuntu2 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mboratko 1609 F.... pulseaudio /dev/snd/controlC1: mboratko 1609 F.... pulseaudio CurrentDesktop: GNOME DistroRelease: Ubuntu 15.04 EcryptfsInUse: Yes InstallationDate: Installed on 2015-04-10 (0 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Beta amd64 (20150326) MachineType: LENOVO 80DU Package: linux (not installed) ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-12-generic.efi.signed root=UUID=0fb46cba-f7ac-4bc5-aa7d-5f6aa74636c1 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.19.0-12.12-generic 3.19.3 RelatedPackageVersions: linux-restricted-modules-3.19.0-12-generic N/A linux-backports-modules-3.19.0-12-generic N/A linux-firmware 1.143 Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-12-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm bumblebee 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 Y70-70 Touch 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 Y70-70 Touch dmi.modalias: dmi:bvnLENOVO:bvr9ECN37WW(V2.01):bd02/11/2015:svnLENOVO:pn80DU:pvrLenovoY70-70Touch:rvnLENOVO:rnLenovoY70-70Touch:rvr31900058WIN:cvnLENOVO:ct10:cvrLenovoY70-70Touch: dmi.product.name: 80DU dmi.product.version: Lenovo Y70-70 Touch dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1442411/+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
