消息：
- 添加了更新 1
- 添加了更新 2
我正在尝试使用技嘉 GA-970 G1 游戏主板，以及TP-Link TL-WDN4800 N900 无线双频 PCI Express 适配器，在 的输出中显示为 Qualcomm Atheros AR93xx 无线网络适配器lspci。在这台机器上，我安装了带4.4.0-21-generic内核的 Ubuntu 16.04 LTS。
问题是，虽然我可以在网络管理器中看到 SSID，但我无法连接其中任何一个。
注意：在提出任何解决方案时，特别是那些涉及从互联网安装固件驱动程序的解决方案，请注意，受影响的机器上没有互联网。板载以太网控制器也与 Ubuntu 不兼容，我为修复该问题所做的尝试又是另一回事（问题！）。所以，请在您的解决方案中考虑到这一点。:-)
细节：
各种各样的
- 不确定这是否有任何后果，但我已经
禁用了 IOMMU已启用在我的 BIOS 设置中，因为如果没有它，我的一半 USB 端口就无法工作。
串行通信
00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (external gfx0 port B) (rev 02)
00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD/ATI] RD990 I/O Memory Management Unit (IOMMU)
00:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (PCI express gpp port B)
00:09.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] RD890 PCI to PCI bridge (PCI express gpp port H)
00:11.0 SATA controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 SATA Controller [AHCI mode] (rev 40)
00:12.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:12.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:13.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:13.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 SMBus Controller (rev 42)
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 Azalia (Intel HDA) (rev 40)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 LPC host controller (rev 40)
00:14.4 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SBx00 PCI to PCI Bridge (rev 40)
00:14.5 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI2 Controller
00:15.0 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB700/SB800/SB900 PCI to PCI bridge (PCIE port 0)
00:15.1 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB700/SB800/SB900 PCI to PCI bridge (PCIE port 1)
00:15.3 PCI bridge: Advanced Micro Devices, Inc. [AMD/ATI] SB900 PCI to PCI bridge (PCIE port 3)
00:16.0 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB OHCI0 Controller
00:16.2 USB controller: Advanced Micro Devices, Inc. [AMD/ATI] SB7x0/SB8x0/SB9x0 USB EHCI Controller
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 15h Processor Function 5
01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1)
02:00.0 USB controller: ASMedia Technology Inc. Device 1343
04:00.0 Ethernet controller: Qualcomm Atheros Killer E220x Gigabit Ethernet Controller (rev 10)
05:00.0 USB controller: VIA Technologies, Inc. VL805 USB 3.0 Host Controller (rev 01)
06:00.0 Network controller: Qualcomm Atheros AR93xx Wireless Network Adapter (rev 01)
瘦身
lshw -C network以下是正在使用的驱动程序的输出ath9k，版本4.4.0-21-generic：
*-network
description: Ethernet interface
product: Killer E220x Gigabit Ethernet Controller
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:04:00.0
logical name: enp4s0
version: 10
serial: 40:8d:5c:e4:ba:a1
capacity: 1Gbit/s
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
configuration: autonegotiation=on broadcast=yes driver=alx latency=0 link=no multicast=yes port=twisted pair
resources: irq:37 memory:fe300000-fe33ffff ioport:d000(size=128)
*-network
description: Wireless interface
product: AR93xx Wireless Network Adapter
vendor: Qualcomm Atheros
physical id: 0
bus info: pci@0000:06:00.0
logical name: wlp6s0
version: 01
serial: ec:08:6b:0c:9c:44
width: 64 bits
clock: 33MHz
capabilities: bus_master cap_list rom ethernet physical wireless
configuration: broadcast=yes driver=ath9k driverversion=4.4.0-21-generic firmware=N/A latency=0 link=no multicast=yes wireless=IEEE 802.11abgn
resources: irq:19 memory:fe100000-fe11ffff memory:fe120000-fe12ffff
我尝试修复这个问题的其中一个方法是获取并安装反向移植驱动程序。我尝试安装来自源头来自最新版本的 backports 4.4.2-1 的、ath9k& alx：wifihttps://www.kernel.org/pub/linux/kernel/projects/backports/stable/v4.4.2/backports-4.4.2-1.tar.gzsudo make install。但是，当我执行以下操作时，我遇到了同样奇怪的 SSL 相关错误这个问题在每种情况下。
当我检查驱动程序版本的输出时，它lspci没有改变，这表明驱动程序安装没有成功。
修改
以下是输出lsmod | grep ath：
ath9k 94208 0
ath9k_common 36864 1 ath9k
ath9k_hw 450560 2 ath9k_common,ath9k
ath 32768 3 ath9k_common,ath9k,ath9k_hw
mac80211 643072 1 ath9k
cfg80211 557056 4 ath,ath9k_common,ath9k,mac80211
compat 16384 4 cfg80211,ath9k_common,ath9k,mac80211
消息
以下是输出dmesg | grep ath：
[ 30.338046] ath9k 0000:06:00.0: enabling device (0000 -> 0002)
[ 30.418133] ath: EEPROM regdomain: 0x21
[ 30.418135] ath: EEPROM indicates we should expect a direct regpair map
[ 30.418136] ath: Country alpha2 being used: AU
[ 30.418137] ath: Regpair used: 0x21
[ 30.437260] ath9k 0000:06:00.0 wlp6s0: renamed from wlan0
[ 40.263768] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 40.403766] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 40.479730] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 63.393710] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 63.597081] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 69.573453] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 69.841450] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 77.562014] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 77.701932] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 77.841982] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 77.917988] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00024e00
[ 82.602363] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 83.622332] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 84.478301] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 84.682355] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 88.226671] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 90.086726] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 90.162614] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 90.238726] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 94.339002] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 94.735039] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 120.524670] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 153.298773] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 196.285427] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 196.425522] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 196.629322] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 249.324642] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00020800
[ 249.656674] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 375.292183] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 375.432233] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 375.636259] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 438.348003] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 438.487985] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 438.691882] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00020800
[ 501.467787] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00004400
[ 501.675643] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 564.483630] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 627.751388] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 690.359206] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 690.627214] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 753.366976] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 753.442967] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 753.518694] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 816.434790] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 879.438564] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
[ 879.770566] ath: phy0: DMA failed to stop in 10 ms AR_CR=0x00000024 AR_DIAG_SW=0x02000020 DMADBG_7=0x00006400
如能提供任何关于如何使我的无线适配器与 Ubuntu 16.04 配合使用的指示，我将非常感激。
谢谢。
更新 1：
讨论表明罪魁祸首可能是 BIOS 设置，以下是相关设置：
- IOMMU：已启用
- XHCI Hand-Off：已启用
- EHCI 切换：已启用
- 网络堆栈：已启用
我还创建了一个新文件，其中
/etc/modprobe.d/ath9k.conf包含以下行：选项 ath9k nohwcrypt=1
因为这是一些线程。
线程中也有人提到这是一个路由器安全问题，因此我也更改了两个路由器级别参数：
- WPA 加密：AES（来自 TKIP + AES）
- 组密钥更新间隔：3600（从0开始）
因为这是在一些线程。
更新 2：
正如我在评论中提到的，我买了一个全新的 PCI NIC，当我将它安装在 WiFi 适配器安装的插槽中时，我仍然无法连接到互联网。这肯定表明主板存在问题，因此我切换了安装 NIC 和 WiFi 适配器的插槽。事实证明，我将 WiFi 适配器安装在了 PCIex1 插槽中（见图 - 黄色框），当我切换到 PCIex4 插槽时（见图 - 红色框），两个适配器都可以正常工作。
那么问题是，是否只有这块主板有这个问题，或者我不应该期望能够在 PCIex1 插槽上运行 WiFi 适配器/NIC？感谢您的所有帮助，尤其是 @jeremy31 和 @chili555。