我尝试在带有 WiFi AR9462 控制器的 LinuxMint 系统上启用无线 LAN 唤醒（WOW、WoWLAN）。我已经尝试了几个内核版本（例如 3.19，...）。目前，我运行 Ubuntu 版本 4.4.0-47。
$ uname -a
Linux xxx 4.4.0-47-generic #68~14.04.1-Ubuntu SMP
据说网络驱动ath9k支持WOW，尤其是AR9462。
$ lshw -C network
*-network
description: Wireless interface
product: AR9462 Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:02:00.0
[...]
configuration: broadcast=yes driver=ath9k driverversion=4.4.0-47-generic firmware=N/A ip=x.x.x.x latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn
我使用Ubuntu预编译内核。根据，应该激活驱动程序/boot/config-4.4.0-47-generic中的 WOW 支持。ath9k
$ cat config-4.4.0-47-generic | grep WOW
CONFIG_ATH9K_WOW=y
然而，当我想用iw命令激活 WOW 时，我得到这个输出：
$ sudo iw phy phy0 wowlan show
command failed: Operation not supported (-95)
$ sudo iw phy phy0 wowlan enable magic-packet
command failed: Operation not supported (-95)
不幸的是，也iw phy0 info没有显示任何有关 WOW 的支持：
$ iw phy0 info
Wiphy phy0
Band 1:
Capabilities: 0x11ef
RX LDPC
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 3839 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT TX/RX MCS rate indexes supported: 0-15
Frequencies:
* 2412 MHz [1] (16.0 dBm)
[...]
* 48.0 Mbps
* 54.0 Mbps
Band 2:
Capabilities: 0x11ef
RX LDPC
HT20/HT40
SM Power Save disabled
RX HT20 SGI
RX HT40 SGI
TX STBC
RX STBC 1-stream
Max AMSDU length: 3839 bytes
DSSS/CCK HT40
Maximum RX AMPDU length 65535 bytes (exponent: 0x003)
Minimum RX AMPDU time spacing: 8 usec (0x06)
HT TX/RX MCS rate indexes supported: 0-15
Frequencies:
* 5180 MHz [36] (15.0 dBm) (passive scanning, no IBSS)
[...]
* 36.0 Mbps
* 48.0 Mbps
* 54.0 Mbps
max # scan SSIDs: 4
max scan IEs length: 2257 bytes
Coverage class: 0 (up to 0m)
Supported Ciphers:
* WEP40 (00-0f-ac:1)
* WEP104 (00-0f-ac:5)
* TKIP (00-0f-ac:2)
* CCMP (00-0f-ac:4)
[...]
* 00-0f-ac:12
Available Antennas: TX 0x3 RX 0x3
Configured Antennas: TX 0x3 RX 0x3
Supported interface modes:
* IBSS
* managed
* AP
* AP/VLAN
* WDS
* monitor
* mesh point
* P2P-client
* P2P-GO
* Unknown mode (11)
software interface modes (can always be added):
* AP/VLAN
* monitor
valid interface combinations:
* #{ managed } <= 2048, #{ AP, mesh point } <= 8, #{ P2P-client, P2P-GO } <= 1,
total <= 2048, #channels <= 1, STA/AP BI must match
* #{ WDS } <= 2048,
total <= 2048, #channels <= 1, STA/AP BI must match
Supported commands:
* new_interface
* set_interface
* new_key
* new_beacon
* new_station
* new_mpath
* set_mesh_params
* set_bss
* authenticate
* associate
* deauthenticate
* disassociate
* join_ibss
* join_mesh
* remain_on_channel
* set_tx_bitrate_mask
* action
* frame_wait_cancel
* set_wiphy_netns
* set_channel
* set_wds_peer
* Unknown command (82)
* Unknown command (81)
* Unknown command (84)
* Unknown command (87)
* Unknown command (85)
* Unknown command (89)
* Unknown command (92)
* connect
* disconnect
Supported TX frame types:
* IBSS: 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
[...]
* Unknown mode (10): 0x00 0x10 0x20 0x30 0x40 0x50 0x60 0x70 0x80 0x90 0xa0 0xb0 0xc0 0xd0 0xe0 0xf0
Supported RX frame types:
* IBSS: 0x40 0xb0 0xc0 0xd0
[...]
* Unknown mode (10): 0x40 0xd0
Device supports RSN-IBSS.
Device supports AP-side u-APSD.
HT Capability overrides:
* MCS: ff ff ff ff ff ff ff ff ff ff
* maximum A-MSDU length
* supported channel width
* short GI for 40 MHz
* max A-MPDU length exponent
* min MPDU start spacing
Device supports TX status socket option.
Device supports HT-IBSS.
如何说服我的系统激活 WiFi 卡上的无线 LAN 唤醒？