My friend has been running Ubuntu 11.10 for quite some time. Everything had been working fine.
The laptop shut down because of battery and when rebooted, the wireless lan hasn't been working with a message "Wireless is disabled by hardware switch". He has checked that the hardware switch is indeed on.
The output of
rfkill list is as follows:
0: ideapad_wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: phy0: Wireless LAN Soft blocked: no Hard blocked: yes 2: ideapad_bluetooth: Bluetooth Soft blocked: no Hard blocked: no
He even tried
rfkill unblock all but
rfkill list still showed
Hard blocked: yes for phy0: Wireless LAN.
Following is the description of wireless interface returned by
*-network DISABLED description: Wireless interface product: Centrino Wireless-N 1000 vendor: Intel Corporation physical id: 0 bus info: pci@0000:06:00.0 logical name: wlan1 version: 00 serial: 74:e5:0b:0c:39:0e width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlagn driverversion=3.0.0-14-generic-pae firmware=188.8.131.52 build 13488 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn resources: irq:42 memory:e8100000-e8101fff
Just for the info, my friend doesn't have Windows on his machine.