linux-image-3.11.0-17-generic omits iwlwifi-7260-7.ucode firmware

[Tero Marttila]

The latest precise-updates linux-image seems to omit the required iwlwifi-7260-7.ucode firwmware

03:00.0 Network controller: Intel Corporation Wireless 7260 (rev 83)

$ dpkg -l linux-image-3.11*
ii linux-image-3.11.0-14-generic 3.11.0-14.21~precise1 Linux kernel image for version 3.11.0 on 64 bit x86 SMP
ii linux-image-3.11.0-15-generic 3.11.0-15.25~precise1 Linux kernel image for version 3.11.0 on 64 bit x86 SMP
ii linux-image-3.11.0-17-generic 3.11.0-17.31~precise1 Linux kernel image for version 3.11.0 on 64 bit x86 SMP

$ dpkg -S iwlwifi-7260
linux-image-3.11.0-15-generic: /lib/firmware/3.11.0-15-generic/iwlwifi-7260-7.ucode
linux-image-3.11.0-14-generic: /lib/firmware/3.11.0-14-generic/iwlwifi-7260-7.ucode

$ dmesg # failed iwlwifi on latest 3.11.0-17 (no iw phy present)
[ 0.000000] Linux version 3.11.0-17-generic (buildd@toyol) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #31~precise1-Ubuntu SMP Tue Feb 4 21:25:43 UTC 2014 (Ubuntu 3.11
.0-17.31~precise1-generic 3.11.10.3)
...
[ 17.770121] iwlwifi 0000:03:00.0: request for firmware file 'iwlwifi-7260-7.ucode' failed.
[ 17.770127] iwlwifi 0000:03:00.0: no suitable firmware found!

$ dmesg # succesfful 3.11.0-15 boot (iw phy0 present)
[ 0.000000] Linux version 3.11.0-15-generic (buildd@allspice) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #25~precise1-Ubuntu SMP Thu Jan 30 17:39:31 UTC 2014 (Ubuntu 3.11.0-15.25~precise1-generic 3.11.10)
...
[ 49.046204] iwlwifi 0000:03:00.0: loaded firmware version 22.0.7.0 op_mode iwlmvm
[ 49.120558] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144

[Tero Marttila (terom-u)]

Workaroud: Boot with Shift held down, and select older 3.11.0-15 linux version in grub.

[Tim Gardner (timg-tpi)]

iwlwifi-7260-7.ucode was moved to linux-firmware 1.79.10 which should get approved shortly.

[Tero Marttila (terom-u)]

Confirm that updating to linux-firmware 1.79.10 from precise-updates resolves this, giving me a functional phy0 on 3.11.0-17-generic.

$ apt-cache policy linux-firmware
linux-firmware:
  Installed: 1.79.10
  Candidate: 1.79.10
  Version table:
 *** 1.79.10 0
        500 http://fi.archive.ubuntu.com/ubuntu/ precise-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu/ precise-security/main amd64 Packages
        100 /var/lib/dpkg/status
     1.79 0
        500 http://fi.archive.ubuntu.com/ubuntu/ precise/main amd64 Packages
$ dmesg | grep iw
[ 21.900148] iwlwifi 0000:03:00.0: can't disable ASPM; OS doesn't have ASPM control
[ 21.900534] iwlwifi 0000:03:00.0: irq 62 for MSI/MSI-X
[ 22.597407] iwlwifi 0000:03:00.0: loaded firmware version 22.1.7.0 op_mode iwlmvm
[ 23.421577] iwlwifi 0000:03:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[ 23.421915] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 23.422293] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 23.733900] ieee80211 phy0: Selected rate control algorithm 'iwl-mvm-rs'
[ 26.266427] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S
[ 26.266872] iwlwifi 0000:03:00.0: L1 Enabled; Disabling L0S