我刚刚从 Windows 转到 ubuntu，所以我是 ubuntu 新手，我尝试安装 ubuntu 16.04.2 并且它运行正常，但没有检测到无线，我尝试像在这个线程上一样找到驱动程序：
如何在 Ubuntu 14.04 上安装 TP-Link TL-WN722N 的驱动程序？
但总是会出现错误，例如
我尝试了所有技巧，但无线仍然没有出现。
我在 Ubuntu 16.04.2 上使用 TP-LINK TL-WN781ND。
这是我的lsusb：
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 003: ID 04d9:a070 Holtek Semiconductor, Inc. Bus 003 Device 002: ID 0c45:7603 Microdia Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 2717:ff80 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
这是我的lshw -class network：
*-network description: Ethernet interface product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: enp3s0 version: 16 serial: b8:97:5a:eb:06:2b size: 10Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=half firmware=rtl8168h-2_0.0.2 02/26/15 latency=0 link=no multicast=yes port=MII speed=10Mbit/s resources: irq:240 ioport:f000(size=256) memory:fd604000-fd604fff memory:fd600000-fd603fff *-network UNCLAIMED description: Network controller product: AR9485 Wireless Network Adapter vendor: Qualcomm Atheros physical id: 0 bus info: pci@0000:0a:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress cap_list configuration: latency=0 resources: memory:fd500000-fd57ffff memory:fd580000-fd58ffff *-network description: Ethernet interface physical id: 1 logical name: enp1s0f0u12 serial: 22:a9:a4:2a:94:09 capabilities: ethernet physical configuration: broadcast=yes driver=rndis_host driverversion=22-Aug-2005 firmware=RNDIS device ip=192.168.42.23 link=yes multicast=yes
这是我的lspci | grep Network：
0a:00.0 Network controller: Qualcomm Atheros AR9485 Wireless Network Adapter (rev 01)
这是我的sudo modprobe ath9k && dmesg | grep ath：
[ 4.936564] [<ffffffffa5a831ef>] warn_slowpath_fmt+0x5f/0x80 [ 8.183789] ath: EEPROM regdomain: 0x21 [ 8.183790] ath: EEPROM indicates we should expect a direct regpair map [ 8.183791] ath: Country alpha2 being used: AU [ 8.183792] ath: Regpair used: 0x21 [ 8.183833] ath: phy0: dma_mapping_error() on RX init [ 8.183862] ath9k 0000:0a:00.0: Failed to initialize device [ 8.183955] ath9k: probe of 0000:0a:00.0 failed with error -12
有人能帮助我吗。