更新：这不是解决方案，但我买了一个 Intel Wireless-ac 9260 并安装了它。没有问题，开箱即用。而且速度更快。
直到最近，多年来，我使用那台机器的 wifi 都没有遇到任何问题（通过几次 Ubuntu 升级）。然后突然间，我的 wifi 在任何网络（工作、机场、咖啡馆等）上活动几秒钟后就开始掉线，除了家里的两个网络之一，这只是家里的原始网络，但通过 wifi 增强器。
我已经更新了我的固件，正如关于这个主题的许多其他问题和此错误报告。我从克瓦洛存储库并将其复制过来（删除我的 QCA6174 文件夹后），并将最新的可用固件文件重命名hw3.0为固件-6.bin同样地固件-5.bin（hw2.1不确定我是否需要后者）。问题依然存在。
以下是一些信息（我使用的是 Ubuntu 19.10）
uname -r
5.4.13-050413-generic
和
lsmod | grep ath10k
ath10k_pci 49152 0
ath10k_core 466944 1 ath10k_pci
ath 36864 1 ath10k_core
mac80211 843776 1 ath10k_core
cfg80211 704512 3 ath,mac80211,ath10k_core
和
lspci -nnk | grep -iA2 net; dmesg | grep ath10k
3b:00.0 Ethernet controller [0200]: Qualcomm Atheros Killer E2400 Gigabit Ethernet Controller [1969:e0a1] (rev 10)
Subsystem: Device [0707:2400]
Kernel driver in use: alx
--
3c:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32)
Subsystem: Bigfoot Networks, Inc. QCA6174 802.11ac Wireless Network Adapter [1a56:1535]
Kernel driver in use: ath10k_pci
Kernel modules: ath10k_pci
[ 3.021542] ath10k_pci 0000:3c:00.0: enabling device (0000 -> 0002)
[ 3.022690] ath10k_pci 0000:3c:00.0: pci irq msi oper_irq_mode 2 irq_mode 0 reset_mode 0
[ 3.309998] ath10k_pci 0000:3c:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
[ 3.310001] ath10k_pci 0000:3c:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[ 3.310580] ath10k_pci 0000:3c:00.0: firmware ver WLAN.RM.4.4.1.c3-00059 api 6 features wowlan,ignore-otp,no-4addr-pad,raw-mode,mfp crc32 3c85e1f9
[ 3.376446] ath10k_pci 0000:3c:00.0: board_file api 2 bmi_id N/A crc32 c15a244d
[ 3.442816] ath10k_pci 0000:3c:00.0: unsupported HTC service id: 1536
[ 3.460443] ath10k_pci 0000:3c:00.0: htt-ver 3.62 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[ 3.542738] ath10k_pci 0000:3c:00.0 wlp60s0: renamed from wlan0
[ 5.639915] ath10k_pci 0000:3c:00.0: unsupported HTC service id: 1536
[ 6.003341] ath10k_pci 0000:3c:00.0: unsupported HTC service id: 1536
[ 338.455559] ath10k_pci 0000:3c:00.0: firmware crashed! (guid e0db7bbf-9872-4b3c-b90f-625d2aac258d)
[ 338.455572] ath10k_pci 0000:3c:00.0: qca6174 hw3.2 target 0x05030000 chip_id 0x00340aff sub 1a56:1535
[ 338.455576] ath10k_pci 0000:3c:00.0: kconfig debug 0 debugfs 1 tracing 1 dfs 0 testmode 0
[ 338.457093] ath10k_pci 0000:3c:00.0: firmware ver WLAN.RM.4.4.1.c3-00059 api 6 features wowlan,ignore-otp,no-4addr-pad,raw-mode,mfp crc32 3c85e1f9
[ 338.458371] ath10k_pci 0000:3c:00.0: board_file api 2 bmi_id N/A crc32 c15a244d
[ 338.458378] ath10k_pci 0000:3c:00.0: htt-ver 3.62 wmi-op 4 htt-op 3 cal otp max-sta 32 raw 0 hwcrypto 1
[ 338.458518] ath10k_pci 0000:3c:00.0: firmware register dump:
[ 338.458524] ath10k_pci 0000:3c:00.0: [00]: 0x05030000 0x00000000 0x00950A7C 0x0059CB04
[ 338.458529] ath10k_pci 0000:3c:00.0: [04]: 0x00950A7C 0x00070030 0x00000000 0x000A68A8
[ 338.458533] ath10k_pci 0000:3c:00.0: [08]: 0x004479B4 0x004481A6 0x00080805 0x0040E788
[ 338.458537] ath10k_pci 0000:3c:00.0: [12]: 0x00000000 0xFFFFFFFF 0x00952CD0 0x00952CE6
[ 338.458541] ath10k_pci 0000:3c:00.0: [16]: 0x809A9637 0x0040E788 0x00404D00 0x2A05C000
[ 338.458545] ath10k_pci 0000:3c:00.0: [20]: 0x00000002 0x00000000 0x00000000 0x0046E7B8
[ 338.458549] ath10k_pci 0000:3c:00.0: [24]: 0x809ED6BF 0x0040E7C8 0x00423C1C 0xC09ED90B
[ 338.458553] ath10k_pci 0000:3c:00.0: [28]: 0x009ED90B 0x00060330 0x00000000 0x2A0BD3C0
[ 338.458557] ath10k_pci 0000:3c:00.0: [32]: 0x0044AC60 0x0040E7E8 0x00000002 0x0059CAF8
[ 338.458561] ath10k_pci 0000:3c:00.0: [36]: 0x00000003 0xFFFFFFFF 0x00952CD0 0x00952CE6
[ 338.458564] ath10k_pci 0000:3c:00.0: [40]: 0xDD36F468 0x00000000 0x00000000 0x000A68A8
[ 338.458568] ath10k_pci 0000:3c:00.0: [44]: 0x809EC16A 0x0040E7F8 0x00000010 0x00423C1C
[ 338.458572] ath10k_pci 0000:3c:00.0: [48]: 0x809EA597 0x0040E7E8 0x0044819E 0x00000000
[ 338.458576] ath10k_pci 0000:3c:00.0: [52]: 0xDD36FA38 0x0049E860 0x00000001 0x004127C0
[ 338.458580] ath10k_pci 0000:3c:00.0: [56]: 0x809EC88D 0x0040E868 0x0041293C 0x0044841C
[ 338.458583] ath10k_pci 0000:3c:00.0: Copy Engine register dump:
[ 338.458595] ath10k_pci 0000:3c:00.0: [00]: 0x00034400 11 11 3 3
[ 338.458606] ath10k_pci 0000:3c:00.0: [01]: 0x00034800 4 4 113 114
[ 338.458617] ath10k_pci 0000:3c:00.0: [02]: 0x00034c00 31 31 94 95
[ 338.458627] ath10k_pci 0000:3c:00.0: [03]: 0x00035000 14 14 16 14
[ 338.458638] ath10k_pci 0000:3c:00.0: [04]: 0x00035400 4439 4431 231 169
[ 338.458648] ath10k_pci 0000:3c:00.0: [05]: 0x00035800 0 0 64 0
[ 338.458659] ath10k_pci 0000:3c:00.0: [06]: 0x00035c00 30 30 17 17
[ 338.458669] ath10k_pci 0000:3c:00.0: [07]: 0x00036000 1 1 1 1
[ 338.759678] ath10k_pci 0000:3c:00.0: unsupported HTC service id: 1536
[ 338.844045] ath10k_pci 0000:3c:00.0: device successfully recovered
[ 433.373584] ath10k_pci 0000:3c:00.0: failed to receive scan abortion completion: timed out
[ 433.373591] ath10k_pci 0000:3c:00.0: failed to stop scan: -110
[ 433.373594] ath10k_pci 0000:3c:00.0: failed to start hw scan: -110
[ 447.457365] ath10k_pci 0000:3c:00.0: wmi command 12289 timeout, restarting hardware
[ 447.457375] ath10k_pci 0000:3c:00.0: failed to start hw scan: -11
[ 447.543417] ath10k_pci 0000:3c:00.0: device has crashed during init
[ 447.571507] ath10k_pci 0000:3c:00.0: device has crashed during init
[ 447.571512] ath10k_pci 0000:3c:00.0: failed to wait for target init: -70
[ 447.778890] ath10k_pci 0000:3c:00.0: unsupported HTC service id: 1536
[ 447.858685] ath10k_pci 0000:3c:00.0: device successfully recovered
[ 573.917228] ath10k_pci 0000:3c:00.0: failed to receive scan abortion completion: timed out
[ 573.917240] ath10k_pci 0000:3c:00.0: failed to abort scan: -110
[ 585.185372] ath10k_pci 0000:3c:00.0: wmi command 24579 timeout, restarting hardware
[ 585.185452] ath10k_pci 0000:3c:00.0: failed to flush transmit queue (skip 1 ar-state 1): 1250
[ 585.267074] ath10k_pci 0000:3c:00.0: failed to delete peer 48:d3:43:67:6a:d7 for vdev 0: -108
[ 585.267257] snd_hda_intel snd_intel_nhlt snd_hda_codec crct10dif_pclmul snd_hda_core snd_hwdep crc32_pclmul snd_pcm mei_hdcp ghash_clmulni_intel intel_rapl_msr snd_seq_midi snd_seq_midi_event snd_rawmidi ath10k_pci ath10k_core i915 snd_seq ath aesni_intel snd_seq_device crypto_simd mac80211 cryptd glue_helper joydev drm_kms_helper dell_wmi rtsx_pci_ms ipmi_devintf dell_smbios intel_cstate ipmi_msghandler dcdbas snd_timer memstick intel_rapl_perf input_leds drm sparse_keymap wmi_bmof serio_raw intel_wmi_thunderbolt dell_wmi_descriptor cfg80211 mei_me mxm_wmi snd processor_thermal_device i2c_algo_bit fb_sys_fops syscopyarea intel_rapl_common sysfillrect soundcore mei libarc4 sysimgblt intel_pch_thermal intel_soc_dts_iosf int3403_thermal int340x_thermal_zone int3400_thermal dell_rbtn acpi_pad acpi_thermal_rel mac_hid nf_log_ipv6 ip6t_REJECT nf_reject_ipv6 xt_hl ip6t_rt nf_log_ipv4 nf_log_common ipt_REJECT nf_reject_ipv4 xt_LOG xt_limit xt_addrtype xt_tcpudp xt_conntrack sch_fq_codel
[ 585.267920] ath10k_pci 0000:3c:00.0: failed to recalculate rts/cts prot for vdev 0: -108
[ 585.267924] ath10k_pci 0000:3c:00.0: failed to set cts protection for vdev 0: -108
[ 585.267929] ath10k_pci 0000:3c:00.0: failed to set erp slot for vdev 0: -108
[ 585.267933] ath10k_pci 0000:3c:00.0: failed to set preamble for vdev 0: -108
[ 585.267937] ath10k_pci 0000:3c:00.0: failed to down vdev 0: -108
[ 585.267942] ath10k_pci 0000:3c:00.0: failed to submit vdev param txbf 0x0: -108
[ 585.267945] ath10k_pci 0000:3c:00.0: failed to recalc txbf for vdev 0: -108
[ 585.518538] ath10k_pci 0000:3c:00.0: device successfully recovered
和
iwconfig
virbr0-nic no wireless extensions.
virbr0 no wireless extensions.
enp59s0 no wireless extensions.
lo no wireless extensions.
wlp60s0 IEEE 802.11 ESSID:"VM1523314_EXT"
Mode:Managed Frequency:2.437 GHz Access Point: 08:36:C9:05:51:2C
Bit Rate=1 Mb/s Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=64/70 Signal level=-46 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
和
cat /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf
[connection]
wifi.powersave = 2
和
journalctl -p err -b
-- Logs begin at Sun 2019-10-06 21:45:30 BST, end at Thu 2020-01-30 17:42:09 GMT. --
Jan 30 16:53:35 bogdan-Alienware-17-R3 kernel: Couldn't get size: 0x800000000000000e
Jan 30 16:53:51 bogdan-Alienware-17-R3 systemd[1]: Failed to start LSB: This service starts and stops VMware services.
Jan 30 16:54:05 bogdan-Alienware-17-R3 gdm-password][2948]: gkr-pam: unable to locate daemon control file
Jan 30 16:54:13 bogdan-Alienware-17-R3 mailnag[3506]: ERROR (2020-01-30 16:54:13): Failed to open mailbox for account '[email protected] (Gmail)' ([AUTHENTICATIONFAILED] Invalid credentials (Failure)).
Jan 30 16:55:14 bogdan-Alienware-17-R3 libvirtd[1621]: Device 0000:02:00.0 not found: could not access /sys/bus/pci/devices/0000:02:00.0/config: No such file or directory
Jan 30 16:55:55 bogdan-Alienware-17-R3 kernel: xhci_hcd 0000:39:00.0: PCI post-resume error -19!
Jan 30 16:55:55 bogdan-Alienware-17-R3 kernel: xhci_hcd 0000:39:00.0: HC died; cleaning up
Jan 30 16:58:44 bogdan-Alienware-17-R3 wpa_supplicant[1407]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: firmware crashed! (guid e0db7bbf-9872-4b3c-b90f-625d2aac258d)
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: firmware register dump:
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [00]: 0x05030000 0x00000000 0x00950A7C 0x0059CB04
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [04]: 0x00950A7C 0x00070030 0x00000000 0x000A68A8
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [08]: 0x004479B4 0x004481A6 0x00080805 0x0040E788
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [12]: 0x00000000 0xFFFFFFFF 0x00952CD0 0x00952CE6
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [16]: 0x809A9637 0x0040E788 0x00404D00 0x2A05C000
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [20]: 0x00000002 0x00000000 0x00000000 0x0046E7B8
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [24]: 0x809ED6BF 0x0040E7C8 0x00423C1C 0xC09ED90B
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [28]: 0x009ED90B 0x00060330 0x00000000 0x2A0BD3C0
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [32]: 0x0044AC60 0x0040E7E8 0x00000002 0x0059CAF8
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [36]: 0x00000003 0xFFFFFFFF 0x00952CD0 0x00952CE6
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [40]: 0xDD36F468 0x00000000 0x00000000 0x000A68A8
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [44]: 0x809EC16A 0x0040E7F8 0x00000010 0x00423C1C
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [48]: 0x809EA597 0x0040E7E8 0x0044819E 0x00000000
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [52]: 0xDD36FA38 0x0049E860 0x00000001 0x004127C0
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [56]: 0x809EC88D 0x0040E868 0x0041293C 0x0044841C
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: Copy Engine register dump:
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [00]: 0x00034400 11 11 3 3
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [01]: 0x00034800 4 4 113 114
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [02]: 0x00034c00 31 31 94 95
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [03]: 0x00035000 14 14 16 14
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [04]: 0x00035400 4439 4431 231 169
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [05]: 0x00035800 0 0 64 0
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [06]: 0x00035c00 30 30 17 17
Jan 30 16:59:11 bogdan-Alienware-17-R3 kernel: ath10k_pci 0000:3c:00.0: [07]: 0x00036000 1 1 1 1
Jan 30 17:01:17 bogdan-Alienware-17-R3 wpa_supplicant[1407]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 30 17:01:49 bogdan-Alienware-17-R3 wpa_supplicant[1407]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 30 17:03:18 bogdan-Alienware-17-R3 wpa_supplicant[1407]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
答案1
有更新的固件文件可能有帮助
cd /lib/firmware/ath10k/QCA6174/hw3.0
sudo mv firmware-6.bin firmware-6.bin.bak
sudo wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/ath10k/QCA6174/hw3.0/firmware-6.bin
sudo mv board-2.bin board-2.bin.bak
sudo wget https://github.com/kvalo/ath10k-firmware/raw/master/QCA6174/hw3.0/board-2.bin重启
如果此新固件使情况变得更糟，您可以通过以下方式恢复到旧版本：
cd /lib/firmware/ath10k/QCA6174/hw3.0
sudo mv firmware-6.bin.bak firmware-6.bin答案2
这可能对某些人有帮助。我通过升级到最新内核 5.11.6 解决了 Ubuntu 18.04.5 中 QCA6174 适配器断开连接和 wifi 断断续续的严重问题。在此之前，我尝试了互联网上几乎所有的方法，但都没有成功。
答案3
这QCA6174硬件设计用于仅限 5 GHz 频段而2.4GHz网络将无法接收到其信号。