我的问题是，我的 HP probook 4330s 中有 AR9285 蓝牙 + wifi 卡。我尝试了网上的几种方法，但蓝牙双模式仍然无法正常工作。
- 启用 btcoex=1
主要症状：首先，开机后蓝牙服务处于停止状态。重启后我可以启动蓝牙管理器。但是当我打开时，我无法连接到任何设备，并且它断线了，没有蓝牙适配器。
这是输出。
uname -a：
Linux nolex-dev 4.10.0-35-generic #39~16.04.1-Ubuntu SMP Wed Sep 13 09:02:42 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
lsusb -t：
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 2: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 2: Dev 3, If 2, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 4: Dev 4, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 4: Dev 4, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 6: Dev 5, If 0, Class=Wireless, Driver=, 12M
|__ Port 6: Dev 5, If 1, Class=Wireless, Driver=, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/6p, 480M
|__ Port 3: Dev 5, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 3: Dev 5, If 1, Class=Wireless, Driver=btusb, 12M
lsmod：
Module Size Used by
rfcomm 77824 0
bnep 20480 2
intel_rapl 20480 0
x86_pkg_temp_thermal 16384 0
intel_powerclamp 16384 0
coretemp 16384 0
kvm_intel 200704 0
ppdev 20480 0
hp_wmi 16384 0
sparse_keymap 16384 1 hp_wmi
kvm 593920 1 kvm_intel
irqbypass 16384 1 kvm
crct10dif_pclmul 16384 0
crc32_pclmul 16384 0
ghash_clmulni_intel 16384 0
pcbc 16384 0
aesni_intel 167936 0
aes_x86_64 20480 1 aesni_intel
crypto_simd 16384 1 aesni_intel
glue_helper 16384 1 aesni_intel
cryptd 24576 3 crypto_simd,ghash_clmulni_intel,aesni_intel
arc4 16384 2
snd_hda_codec_hdmi 49152 1
intel_cstate 20480 0
uvcvideo 90112 0
ath9k 147456 0
ath9k_common 36864 1 ath9k
videobuf2_vmalloc 16384 1 uvcvideo
ath9k_hw 466944 2 ath9k,ath9k_common
videobuf2_memops 16384 1 videobuf2_vmalloc
videobuf2_v4l2 24576 1 uvcvideo
snd_hda_codec_idt 57344 1
snd_hda_codec_generic 73728 1 snd_hda_codec_idt
intel_rapl_perf 16384 0
ath 28672 3 ath9k_hw,ath9k,ath9k_common
snd_hda_intel 36864 3
videobuf2_core 40960 2 uvcvideo,videobuf2_v4l2
snd_hda_codec 126976 4 snd_hda_intel,snd_hda_codec_idt,snd_hda_codec_hdmi,snd_hda_codec_generic
mac80211 782336 1 ath9k
joydev 20480 0
snd_hda_core 81920 5 snd_hda_intel,snd_hda_codec,snd_hda_codec_idt,snd_hda_codec_hdmi,snd_hda_codec_generic
videodev 172032 3 uvcvideo,videobuf2_core,videobuf2_v4l2
media 40960 2 uvcvideo,videodev
input_leds 16384 0
snd_hwdep 16384 1 snd_hda_codec
btusb 45056 0
btrtl 16384 1 btusb
serio_raw 16384 0
btbcm 16384 1 btusb
btintel 16384 1 btusb
snd_pcm 102400 4 snd_hda_intel,snd_hda_codec,snd_hda_core,snd_hda_codec_hdmi
bluetooth 557056 14 btrtl,btintel,bnep,btbcm,rfcomm,btusb
lpc_ich 24576 0
cfg80211 602112 4 mac80211,ath9k,ath,ath9k_common
jmb38x_ms 20480 0
snd_timer 32768 1 snd_pcm
memstick 16384 1 jmb38x_ms
snd 77824 14 snd_hda_intel,snd_hwdep,snd_hda_codec,snd_hda_codec_idt,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_generic,snd_pcm
soundcore 16384 1 snd
shpchp 36864 0
mei_me 40960 0
mei 102400 1 mei_me
hp_accel 28672 0
lis3lv02d 20480 1 hp_accel
parport_pc 32768 0
mac_hid 16384 0
parport 49152 2 parport_pc,ppdev
input_polldev 16384 1 lis3lv02d
autofs4 40960 2
hid_logitech_hidpp 28672 0
hid_logitech_dj 20480 0
usbhid 53248 0
hid 118784 4 usbhid,hid_logitech_dj,hid_logitech_hidpp
amdkfd 139264 1
amd_iommu_v2 20480 1 amdkfd
i915 1449984 3
radeon 1507328 1
psmouse 139264 0
ahci 36864 1
libahci 32768 1 ahci
r8169 81920 0
ttm 98304 1 radeon
i2c_algo_bit 16384 2 radeon,i915
mii 16384 1 r8169
drm_kms_helper 151552 2 radeon,i915
syscopyarea 16384 1 drm_kms_helper
sysfillrect 16384 1 drm_kms_helper
sysimgblt 16384 1 drm_kms_helper
fb_sys_fops 16384 1 drm_kms_helper
sdhci_pci 28672 0
drm 352256 7 radeon,i915,ttm,drm_kms_helper
sdhci 45056 1 sdhci_pci
wmi 16384 1 hp_wmi
video 40960 1 i915
fjes 77824 0
cat /etc/modprobe.d/ath9k.conf：
options ath9k nohwcrypt=1
options ath9k ps_enable=1
options ath9k blink=1
options ath9k btcoex_enable=1
rfkill list：
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
2: hp-wifi: Wireless LAN
Soft blocked: no
Hard blocked: no
3: hp-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
lspci -knn | grep Net -A3; lsusb; dmesg | grep -E 'Blue|ath'：
25:00.0 Network controller [0280]: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) [168c:002b] (rev 01)
DeviceName: WLAN
Subsystem: Hewlett-Packard Company AR9285 Wireless Network Adapter (PCI-Express) [103c:1461]
Kernel driver in use: ath9k
Kernel modules: ath9k
26:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 06)
Bus 002 Device 005: ID 03f0:311d Hewlett-Packard Atheros AR9285 Malbec Bluetooth Adapter
Bus 002 Device 004: ID 04f2:b230 Chicony Electronics Co., Ltd Integrated HP HD Webcam
Bus 002 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
[ 9.025384] Bluetooth: Core ver 2.22
[ 9.025402] Bluetooth: HCI device and connection manager initialized
[ 9.025405] Bluetooth: HCI socket layer initialized
[ 9.025408] Bluetooth: L2CAP socket layer initialized
[ 9.025413] Bluetooth: SCO socket layer initialized
[ 9.213639] ath: phy0: Disabling ASPM since BTCOEX is enabled
[ 9.213642] ath: EEPROM regdomain: 0x60
[ 9.213643] ath: EEPROM indicates we should expect a direct regpair map
[ 9.213645] ath: Country alpha2 being used: 00
[ 9.213646] ath: Regpair used: 0x60
[ 9.265926] ath9k 0000:25:00.0 wlo1: renamed from wlan0
[ 14.703648] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.703650] Bluetooth: BNEP filters: protocol multicast
[ 14.703654] Bluetooth: BNEP socket layer initialized
hcitool dev不会丢弃任何类型的适配器。当我插入自定义 BT 适配器时，会为此丢弃一个设备处理程序。
我认为 ath9k 驱动程序缺少正确的设备描述符。
编辑1：
删除了 ath9k.conf
我试过：
modprobe -rfv ath9k
modprobe ath9k btcoex_enable=1
[ 300.117260] ath: phy0: Disabling ASPM since BTCOEX is enabled
[ 300.117262] ath: EEPROM regdomain: 0x60
[ 300.117263] ath: EEPROM indicates we should expect a direct regpair map
[ 300.117264] ath: Country alpha2 being used: 00
[ 300.117264] ath: Regpair used: 0x60
[ 300.118861] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[ 300.120210] ieee80211 phy0: Atheros AR9285 Rev:2 mem=0xffffade802450000, irq=19
[ 300.120827] ath9k 0000:25:00.0 wlo1: renamed from wlan0
未找到适配器，结果相同。
答案1
好的，正如 pilot6 所说，我尝试加载 ath3k 内核模块。现在它运行良好！wifi 和音频接收器都正常。
sudo modprobe ath3k
dmesg回答：
[ 3747.157360] usbcore: registered new interface driver ath3k
[ 3747.209334] usb 2-1.6: USB disconnect, device number 5
[ 3747.575194] usb 2-1.6: new full-speed USB device number 6 using ehci-pci
[ 3747.684269] usb 2-1.6: New USB device found, idVendor=03f0, idProduct=311d
[ 3747.684276] usb 2-1.6: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 3747.977303] usb 2-1.6: USB disconnect, device number 6
[ 3748.711212] usb 2-1.6: new full-speed USB device number 7 using ehci-pci
[ 3748.820028] usb 2-1.6: New USB device found, idVendor=0cf3, idProduct=3005
[ 3748.820033] usb 2-1.6: New USB device strings: Mfr=0, Product=0, SerialNumber=0
为了永久解决问题，我必须编辑/etc/modules并添加ath3k。