Laptop: HP Compaq 6910p
This is the Ubuntu 14.04 3.13.0-27-generic kernel driver for the laptop
wireless:
root@laptop:~# dmesg | grep iwl
[ 29.249428] iwl4965: Intel(R) Wireless WiFi 4965 driver for Linux, in-tree:
[ 29.249431] iwl4965: Copyright(c) 2003-2011 Intel Corporation
[ 29.249496] iwl4965 0000:10:00.0: can't disable ASPM; OS doesn't have ASPM
control
[ 29.249613] iwl4965 0000:10:00.0: Detected Intel(R) Wireless WiFi Link
4965AGN, REV=0x4
[ 29.288186] iwl4965 0000:10:00.0: device EEPROM VER=0x36, CALIB=0x5
[ 29.289587] iwl4965 0000:10:00.0: Tunable channels: 11 802.11bg, 13 802.11a
channels
[ 29.289633] iwl4965 0000:10:00.0: irq 47 for MSI/MSI-X
[ 29.726043] iwl4965 0000:10:00.0: loaded firmware version 228.61.2.24
[ 29.747585] ieee80211 phy0: Selected rate control algorithm 'iwl-4965-rs'
This shows the wireless interface is hard blocked (which is the issue
network manager reports with the "disabled by hardware switch" message):
root@laptop:~# rfkill list
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: yes
Hard blocked: yes
I tried doing 'rfkill unblock all' and 'rmmod iwl4965 ; modprobe
iwl4965' to see if that would get WiFi working, but it didn't help.
I ended up booting to the Ubuntu 13.10 linux 3.11.0-20-generic kernel
(still installed from before the Ubuntu upgrade) and WiFi worked fine.
When booted to the older kernel, rfkill list properly shows "blocked:
no" for the wireless interface. So for now, this is my workaround --
running Ubuntu 14.04 with an old kernel.
Note, this doesn't seem to be a bug with network-manager itself, but the
kernel wireless drivers.
Hopefully this bug gets fixed so I don't have to run a back rev kernel.
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1287827
Title:
wifi not configurable in network-manager showing disabled by hardware
switch
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https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1287827/+subscriptions
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