rtl8812AU

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I can put the adapter in monitoring mode. But it is not possible to change the wireless channel. See debug log below.

root@raspberrypi:/home/wouter# uname -a
Linux raspberrypi 4.9.78-v7+ #1084 SMP Thu Jan 25 18:05:49 GMT 2018 armv7l GNU/Linux

root@raspberrypi:/home/wouter# iw --debug phy phy0 set channel 6
-- Debug: Sent Message:
--------------------------   BEGIN NETLINK MESSAGE ---------------------------
  [NETLINK HEADER] 16 octets
    .nlmsg_len = 44
    .type = 22 <0x16>
    .flags = 5 <REQUEST,ACK>
    .seq = 1516956550
    .port = -1388313896
  [GENERIC NETLINK HEADER] 4 octets
    .cmd = 2
    .version = 0
    .unused = 0
  [PAYLOAD] 24 octets
    08 00 01 00 00 00 00 00 08 00 26 00 85 09 00 00 ..........&.....
    08 00 27 00 00 00 00 00                         ..'.....
---------------------------  END NETLINK MESSAGE   ---------------------------
-- Debug: Received Message:
--------------------------   BEGIN NETLINK MESSAGE ---------------------------
  [NETLINK HEADER] 16 octets
    .nlmsg_len = 64
    .type = 2 <ERROR>
    .flags = 0 <>
    .seq = 1516956550
    .port = -1388313896
  [ERRORMSG] 20 octets
    .error = -95 "Operation not supported"
  [ORIGINAL MESSAGE] 16 octets
    .nlmsg_len = 16
    .type = 22 <0x16>
    .flags = 5 <REQUEST,ACK>
    .seq = 1516956550
    .port = -1388313896
---------------------------  END NETLINK MESSAGE   ---------------------------
command failed: Operation not supported (-95)

I have the exact same iseue

root@ubuntu:~# iw --debug phy phy0 set channel 6
-- Debug: Sent Message:
--------------------------   BEGIN NETLINK MESSAGE ---------------------------
  [NETLINK HEADER] 16 octets
    .nlmsg_len = 60
    .type = 28 <0x1c>
    .flags = 5 <REQUEST,ACK>
    .seq = 1539528432
    .port = 369101486
  [GENERIC NETLINK HEADER] 4 octets
    .cmd = 2
    .version = 0
    .unused = 0
  [PAYLOAD] 40 octets
    08 00 01 00 00 00 00 00 08 00 26 00 85 09 00 00 ..........&.....
    08 00 9f 00 00 00 00 00 08 00 27 00 00 00 00 00 ..........'.....
    08 00 a0 00 85 09 00 00                         ........
---------------------------  END NETLINK MESSAGE   ---------------------------
-- Debug: Received Message:
--------------------------   BEGIN NETLINK MESSAGE ---------------------------
  [NETLINK HEADER] 16 octets
    .nlmsg_len = 80
    .type = 2 <ERROR>
    .flags = 0 <>
    .seq = 1539528432
    .port = 369101486
  [ERRORMSG] 20 octets
    .error = -95 "Operation not supported"
  [ORIGINAL MESSAGE] 16 octets
    .nlmsg_len = 16
    .type = 28 <0x1c>
    .flags = 5 <REQUEST,ACK>
    .seq = 1539528432
    .port = 369101486
---------------------------  END NETLINK MESSAGE   ---------------------------
command failed: Operation not supported (-95)