Please, help me to solve problem with wi-fi in kali linux 2019.4 Previous version of Kali linux worked fine (it was 2019.1 i think). I've reinstalled new version 2019.4 on my usb (tried live and full installation). And now wi-fi doesn't work correctly. Wifi keeps dropping. Connection starst normally but then the bit rate goes down to something like 1-6mb/s and then it disconnect. Network controller: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01) I have tried to change firmware but it is already new version, and there is no any other versions in repository.

root@kali:~# apt-get install firmware-atherosReading package lists... Done
Building dependency tree
Reading state information... Done
firmware-atheros is already the newest version (20190717-2).

0 upgraded, 0 newly installed, 0 to remove and 419 not upgraded.


There is errors in Syslog (i found there is a lot of "CTRL-EVENT-BEACON-LOSS" errors):

Jan 3 14:18:49 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-CONNECTED - Connection to 2c:4d:54:83:5c:58 completed [id=0 id_str=]
Jan 3 14:18:49 kali NetworkManager[597]: <info> [1578079129.8308] device (wlan0): supplicant interface state: 4-way handshake -> completed
Jan 3 14:18:49 kali NetworkManager[597]: <info> [1578079129.8314] device (p2p-dev-wlan0): supplicant management interface state: 4-way handshake -> completed
Jan 3 14:18:50 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-50 noise=-92 txrate=1000
Jan 3 14:18:59 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:19:00 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:19:03 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:19:04 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:19:07 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:19:07 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-DISCONNECTED bssid=2c:4d:54:83:5c:58 reason=4 locally_generated=1
Jan 3 14:19:07 kali NetworkManager[597]: <warn> [1578079147.6100] sup-iface[0x55af678bf110,wlan0]: connection disconnected (reason -4)
Jan 3 14:19:07 kali wpa_supplicant[767]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 3 14:19:07 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Jan 3 14:19:07 kali NetworkManager[597]: <info> [1578079147.6496] device (wlan0): supplicant interface state: completed -> disconnected
Jan 3 14:19:07 kali NetworkManager[597]: <info> [1578079147.6497] device (p2p-dev-wlan0): supplicant management interface state: completed -> disconnected
Jan 3 14:19:07 kali NetworkManager[597]: <info> [1578079147.7162] device (wlan0): supplicant interface state: disconnected -> scanning
Jan 3 14:19:07 kali NetworkManager[597]: <info> [1578079147.7163] device (p2p-dev-wlan0): supplicant management interface state: disconnected -> scanning
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: SME: Trying to authenticate with 2c:4d:54:83:5c:58 (SSID='MyWifiNetwork' freq=2412 MHz)
Jan 3 14:19:08 kali kernel: [ 1631.696648] wlan0: authenticate with 2c:4d:54:83:5c:58
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.7821] device (wlan0): supplicant interface state: scanning -> authenticating
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.7822] device (p2p-dev-wlan0): supplicant management interface state: scanning -> authenticating
Jan 3 14:19:08 kali kernel: [ 1631.714013] wlan0: send auth to 2c:4d:54:83:5c:58 (try 1/3)
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: Trying to associate with 2c:4d:54:83:5c:58 (SSID='MyWifiNetwork' freq=2412 MHz)
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.7839] device (wlan0): supplicant interface state: authenticating -> associating
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.7840] device (p2p-dev-wlan0): supplicant management interface state: authenticating -> associating
Jan 3 14:19:08 kali kernel: [ 1631.716000] wlan0: authenticated
Jan 3 14:19:08 kali kernel: [ 1631.723886] wlan0: associate with 2c:4d:54:83:5c:58 (try 1/3)
Jan 3 14:19:08 kali kernel: [ 1631.727811] wlan0: RX AssocResp from 2c:4d:54:83:5c:58 (capab=0x1411 status=0 aid=1)
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: Associated with 2c:4d:54:83:5c:58
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Jan 3 14:19:08 kali kernel: [ 1631.727939] wlan0: associated
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8016] device (wlan0): supplicant interface state: associating -> associated
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8016] device (p2p-dev-wlan0): supplicant management interface state: associating -> associated
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8096] device (wlan0): supplicant interface state: associated -> 4-way handshake
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8096] device (p2p-dev-wlan0): supplicant management interface state: associated -> 4-way handshake
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: WPA: Key negotiation completed with 2c:4d:54:83:5c:58 [PTK=CCMP GTK=CCMP]
Jan 3 14:19:08 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-CONNECTED - Connection to 2c:4d:54:83:5c:58 completed [id=0 id_str=]
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8190] device (wlan0): supplicant interface state: 4-way handshake -> completed
Jan 3 14:19:08 kali NetworkManager[597]: <info> [1578079148.8196] device (p2p-dev-wlan0): supplicant management interface state: 4-way handshake -> completed
Jan 3 14:19:09 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-48 noise=-92 txrate=1000






Jan 3 14:37:11 kali wpa_supplicant[767]: wlan0: WPA: Key negotiation completed with 2c:4d:54:83:5c:58 [PTK=CCMP GTK=CCMP]
Jan 3 14:37:11 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-CONNECTED - Connection to 2c:4d:54:83:5c:58 completed [id=0 id_str=]
Jan 3 14:37:11 kali NetworkManager[597]: <info> [1578080231.8805] device (wlan0): supplicant interface state: 4-way handshake -> completed
Jan 3 14:37:11 kali NetworkManager[597]: <info> [1578080231.8810] device (p2p-dev-wlan0): supplicant management interface state: 4-way handshake -> completed
Jan 3 14:37:12 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-51 noise=-92 txrate=39000
Jan 3 14:37:29 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:31 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:33 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:35 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:37 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:39 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:41 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:43 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:43 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-DISCONNECTED bssid=2c:4d:54:83:5c:58 reason=4 locally_generated=1
Jan 3 14:37:43 kali NetworkManager[597]: <warn> [1578080263.6820] sup-iface[0x55af678bf110,wlan0]: connection disconnected (reason -4)
Jan 3 14:37:43 kali wpa_supplicant[767]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 3 14:37:43 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Jan 3 14:37:43 kali NetworkManager[597]: <info> [1578080263.7133] device (wlan0): supplicant interface state: completed -> disconnected
Jan 3 14:37:43 kali NetworkManager[597]: <info> [1578080263.7133] device (p2p-dev-wlan0): supplicant management interface state: completed -> disconnected
Jan 3 14:37:43 kali NetworkManager[597]: <info> [1578080263.7883] device (wlan0): supplicant interface state: disconnected -> scanning
Jan 3 14:37:43 kali NetworkManager[597]: <info> [1578080263.7884] device (p2p-dev-wlan0): supplicant management interface state: disconnected -> scanning
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: SME: Trying to authenticate with 2c:4d:54:83:5c:58 (SSID='MyWifiNetwork' freq=2412 MHz)
Jan 3 14:37:44 kali kernel: [ 2747.785493] wlan0: authenticate with 2c:4d:54:83:5c:58
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8699] device (wlan0): supplicant interface state: scanning -> authenticating
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8700] device (p2p-dev-wlan0): supplicant management interface state: scanning -> authenticating
Jan 3 14:37:44 kali kernel: [ 2747.801962] wlan0: send auth to 2c:4d:54:83:5c:58 (try 1/3)
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: Trying to associate with 2c:4d:54:83:5c:58 (SSID='MyWifiNetwork' freq=2412 MHz)
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8722] device (wlan0): supplicant interface state: authenticating -> associating
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8722] device (p2p-dev-wlan0): supplicant management interface state: authenticating -> associating
Jan 3 14:37:44 kali kernel: [ 2747.804018] wlan0: authenticated
Jan 3 14:37:44 kali kernel: [ 2747.811930] wlan0: associate with 2c:4d:54:83:5c:58 (try 1/3)
Jan 3 14:37:44 kali kernel: [ 2747.815947] wlan0: RX AssocResp from 2c:4d:54:83:5c:58 (capab=0x1411 status=0 aid=1)
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: Associated with 2c:4d:54:83:5c:58
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SUBNET-STATUS-UPDATE status=0
Jan 3 14:37:44 kali kernel: [ 2747.816062] wlan0: associated
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8894] device (wlan0): supplicant interface state: associating -> associated
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.8895] device (p2p-dev-wlan0): supplicant management interface state: associating -> associated
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.9008] device (wlan0): supplicant interface state: associated -> 4-way handshake
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.9009] device (p2p-dev-wlan0): supplicant management interface state: associated -> 4-way handshake
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: WPA: Key negotiation completed with 2c:4d:54:83:5c:58 [PTK=CCMP GTK=CCMP]
Jan 3 14:37:44 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-CONNECTED - Connection to 2c:4d:54:83:5c:58 completed [id=0 id_str=]
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.9104] device (wlan0): supplicant interface state: 4-way handshake -> completed
Jan 3 14:37:44 kali NetworkManager[597]: <info> [1578080264.9110] device (p2p-dev-wlan0): supplicant management interface state: 4-way handshake -> completed
Jan 3 14:37:45 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-SIGNAL-CHANGE above=1 signal=-49 noise=-91 txrate=39000
Jan 3 14:37:47 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-BEACON-LOSS
Jan 3 14:37:47 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-DISCONNECTED bssid=2c:4d:54:83:5c:58 reason=4 locally_generated=1
Jan 3 14:37:47 kali NetworkManager[597]: <warn> [1578080267.6621] sup-iface[0x55af678bf110,wlan0]: connection disconnected (reason -4)
Jan 3 14:37:47 kali wpa_supplicant[767]: dbus: wpa_dbus_property_changed: no property SessionLength in object /fi/w1/wpa_supplicant1/Interfaces/0
Jan 3 14:37:47 kali wpa_supplicant[767]: wlan0: CTRL-EVENT-REGDOM-CHANGE init=CORE type=WORLD
Jan 3 14:37:47 kali NetworkManager[597]: <info> [1578080267.7017] device (wlan0): supplicant interface state: completed -> disconnected
Jan 3 14:37:47 kali NetworkManager[597]: <info> [1578080267.7018] device (p2p-dev-wlan0): supplicant management interface state: completed -> disconnected
Jan 3 14:37:47 kali NetworkManager[597]: <info> [1578080267.7684] device (wlan0): supplicant interface state: disconnected -> scanning
Jan 3 14:37:47 kali NetworkManager[597]: <info> [1578080267.7684] device (p2p-dev-wlan0): supplicant management interface state: disconnected -> scanning



"iw dev wlan0 link" command

root@kali:~# iw dev wlan0 link
Connected to 2c:4d:54:83:5c:58 (on wlan0)
SSID: MyWifiNetwork
freq: 2412
RX: 9804 bytes (83 packets)
TX: 761 bytes (8 packets)
signal: -56 dBm
rx bitrate: 1.0 MBit/s
tx bitrate: 14.4 MBit/s MCS 1 short GI


bss flags: short-preamble short-slot-time
dtim period: 3
beacon int: 100