Ideapad s205: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/875659
Wireless: rt2800pci: Ralink corp. RT3090 Wireless 802.11n 1T/1R PCIe [1814:3090]

unpatched:

	0: acer-wireless: Wireless LAN
		Soft blocked: yes
		Hard blocked: no
	1: ideapad_wlan: Wireless LAN
		Soft blocked: no
		Hard blocked: no
	2: ideapad_bluetooth: Bluetooth
		Soft blocked: no
		Hard blocked: no
	3: hci0: Bluetooth
		Soft blocked: no
		Hard blocked: no
	4: phy0: Wireless LAN
		Soft blocked: no
		Hard blocked: no

	soft blocked can not be unblocked by `rfkill unblock`

patched: Boot with hardware switch ON

	0: hci0: Bluetooth
		Soft blocked: no
		Hard blocked: no
	1: ideapad_wlan: Wireless LAN
		Soft blocked: no
		Hard blocked: no
	2: ideapad_bluetooth: Bluetooth
		Soft blocked: no
		Hard blocked: no
	3: phy0: Wireless LAN
		Soft blocked: no
		Hard blocked: yes

	hard blocked can not be unblocked by hardware switch

modified the patch not to poke the ec register:

	0: ideapad_wlan: Wireless LAN
		Soft blocked: no
		Hard blocked: no
	1: ideapad_bluetooth: Bluetooth
		Soft blocked: no
		Hard blocked: no
	2: hci0: Bluetooth
		Soft blocked: no
		Hard blocked: no
	3: phy0: Wireless LAN
		Soft blocked: no
		Hard blocked: no


Ideapad s12: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/668234
Wireless: wl: Broadcom Corporation BCM4312 802.11b/g LP-PHY [14e4:4315] (rev 01)

unpatched:

	No data

patched:

	0: ideapad_wlan: Wireless LAN
		Soft blocked: no
		Hard blocked: no
	1: ideapad_bluetooth: Bluetooth
		Soft blocked: no
		Hard blocked: no
	2: hci0: Bluetooth
		Soft blocked: no
		Hard blocked: no
	3: phy0: Wireless LAN
		Soft blocked: no
		Hard blocked: yes

Although my physical hardware switch is enabled, the wlan card's state is "Hard blocked: yes". "rfkill unblock all" does not unblock it. I have to disable and reenable the hardware switch manually and then I get wlan connection right away :-)

blacklist patched acer-wmi:

0: hci0: Bluetooth
	Soft blocked: no
	Hard blocked: no
1: ideapad_wlan: Wireless LAN
	Soft blocked: yes
	Hard blocked: no
2: ideapad_bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no
3: phy0: Wireless LAN
	Soft blocked: yes
	Hard blocked: no

soft block of phy0 can be unblocked by `rfkill unblock`. But after couple of seconds, hard block change to 'yes'.