因此,我有如上所述的特定 WLAN 适配器 (168c:0042 rev 31),但如果将频道设置为 13,我无法在 WiFi 网络列表中找到我的 WiFi(如果我将其设置为 < 13,我可以找到它,但其他频道上有太多 WiFi 网络,它们只是弄乱了我的,下载速度变得非常慢)。我已将我的区域设置为相应的区域sudo iw reg set
(我相当确定支持频道 13),但问题仍然存在。我想知道问题的根源是否是任何驱动程序(当前使用 ath10k)。
编辑1:输出iw list | grep Freq -A14
:
Frequencies:
* 2412 MHz [1] (20.0 dBm)
* 2417 MHz [2] (20.0 dBm)
* 2422 MHz [3] (20.0 dBm)
* 2427 MHz [4] (20.0 dBm)
* 2432 MHz [5] (20.0 dBm)
* 2437 MHz [6] (20.0 dBm)
* 2442 MHz [7] (20.0 dBm)
* 2447 MHz [8] (20.0 dBm)
* 2452 MHz [9] (20.0 dBm)
* 2457 MHz [10] (20.0 dBm)
* 2462 MHz [11] (20.0 dBm)
* 2467 MHz [12] (20.0 dBm)
* 2472 MHz [13] (disabled)
* 2484 MHz [14] (disabled)
--
Frequencies:
* 5180 MHz [36] (20.0 dBm) (no IR)
* 5200 MHz [40] (20.0 dBm) (no IR)
* 5220 MHz [44] (20.0 dBm) (no IR)
* 5240 MHz [48] (20.0 dBm) (no IR)
* 5260 MHz [52] (20.0 dBm) (no IR, radar detection)
DFS state: usable (for 103 sec)
DFS CAC time: 60000 ms
* 5280 MHz [56] (20.0 dBm) (no IR, radar detection)
DFS state: usable (for 103 sec)
DFS CAC time: 60000 ms
* 5300 MHz [60] (20.0 dBm) (no IR, radar detection)
DFS state: usable (for 103 sec)
DFS CAC time: 60000 ms
* 5320 MHz [64] (20.0 dBm) (no IR, radar detection)
编辑2:输出iw reg get
:
country GR: DFS-ETSI
(2402 - 2482 @ 40), (N/A, 20), (N/A)
(5170 - 5250 @ 80), (N/A, 20), (N/A)
(5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS
(5490 - 5710 @ 160), (N/A, 27), (0 ms), DFS
(57000 - 66000 @ 2160), (N/A, 40), (N/A)
编辑3:输出dmesg | grep ath
:
[ 1.960190] ath10k_pci 0000:03:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
[ 2.252806] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/pre-cal-pci-0000:03:00.0.bin failed with error -2
[ 2.252815] ath10k_pci 0000:03:00.0: Direct firmware load for ath10k/cal-pci-0000:03:00.0.bin failed with error -2
[ 2.269809] ath10k_pci 0000:03:00.0: qca9377 hw1.1 target 0x05020001 chip_id 0x003821ff sub 11ad:08a6
[ 2.269811] ath10k_pci 0000:03:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[ 2.270128] ath10k_pci 0000:03:00.0: firmware ver WLAN.TF.1.0-00267-1 api 5 features ignore-otp crc32 79cea2c7
[ 2.338522] ath10k_pci 0000:03:00.0: board_file api 2 bmi_id N/A crc32 93da0176
[ 4.117342] ath10k_pci 0000:03:00.0: htt-ver 3.1 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[ 4.123902] ath: EEPROM regdomain: 0x69
[ 4.123903] ath: EEPROM indicates we should expect a direct regpair map
[ 4.123905] ath: Country alpha2 being used: 00
[ 4.123905] ath: Regpair used: 0x69
[ 4.128498] ath10k_pci 0000:03:00.0 wlp3s0: renamed from wlan0
答案1
您需要在软件源中启用源代码存储库,并确保 build-essential 与内核头文件一起安装。您还需要在 BIOS 中禁用安全启动
sudo apt-get install build-essential linux-headers-generic
然后我们就可以下载内核源代码了
apt-get source linux-image-$(uname -r)
然后我们可以导航到 ath 文件夹
cd linux-hwe-4.8.0/drivers/net/wireless/ath
使用 gedit 打开我们需要更改的文件
gedit regd.c
到第 235-237 行并更改
case 0x66:
case 0x69:
return &ath_world_regdom_66_69;
到
case 0x66:
return &ath_world_regdom_66_69;
case 0x69:
return &ath_world_regdom_60_61_62;
确保缩进匹配,大小写应从TAB左边开始,返回应为 2TAB左边开始两个,然后保存文件并退出 gedit。然后我们可以用
make -C /lib/modules/$(uname -r)/build M=$(pwd) modules
如果更改正确,它应该可以编译。然后我们可以复制原始模块
sudo mv /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko.bak
然后我们可以将新模块复制到内核
sudo cp ath.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko
重启
内核更新后需要重新执行此操作,并且您需要
cd linux-hwe-4.8.0/drivers/net/wireless/ath
make -C /lib/modules/$(uname -r)/build M=$(pwd) clean
make -C /lib/modules/$(uname -r)/build M=$(pwd) modules
sudo mv /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko.bak
sudo cp ath.ko /lib/modules/$(uname -r)/kernel/drivers/net/wireless/ath/ath.ko
重启后新内核将进入第 13 频道