Hello, Some news about the AX200 module in AC mode. I found some information on forum: If you want reliable wifi, better look at tested 802.11ac solutions rather than at Intel ones that see very few use in AP mode. >From Intel's product page, the AX200 is not ax certified either (it clearly says 'WiFi 6 pre' - I have no idea if the 802.11ax spec itself is finalised by now; but I wouldn't put my money on pre-certification hardware). Website -> https://forum.openwrt.org/t/kernel-replacement-for-ax200/40915 Is it true ? On my side I tested the module with iperf but not in hostapd. For the test I used a S10+ compatible AC mode and a Asus AC router and a Jetson Nano with AX200 module. Nano and S10+ are connected to the Asus router in 5Ghz AC mode. So I just try to test the AC (wifi5 mode) and forgot the AX (wifi6 mode) My results: Iperf -s on the nano side and S10+ in client Cmd nano: iperf -s -i 1 (ip nano 192.168.1.50) (nano is in listening mode TCP) Cmd s10+: iperf -c 192.168.1.50 (ip S10+ 192.168.1.47) Result on nano: ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local 192.168.1.50 port 5001 connected with 192.168.1.47 port 49960 [ ID] Interval Transfer Bandwidth [ 4] 0.0- 1.0 sec 56.2 MBytes 471 Mbits/sec [ 4] 1.0- 2.0 sec 15.1 MBytes 127 Mbits/sec [ 4] 2.0- 3.0 sec 9.10 MBytes 76.4 Mbits/sec [ 4] 3.0- 4.0 sec 23.8 MBytes 200 Mbits/sec [ 4] 4.0- 5.0 sec 63.7 MBytes 534 Mbits/sec [ 4] 5.0- 6.0 sec 67.5 MBytes 566 Mbits/sec [ 4] 6.0- 7.0 sec 68.1 MBytes 571 Mbits/sec [ 4] 7.0- 8.0 sec 70.0 MBytes 587 Mbits/sec [ 4] 8.0- 9.0 sec 71.1 MBytes 597 Mbits/sec [ 4] 9.0-10.0 sec 67.1 MBytes 563 Mbits/sec [ 4] 0.0-10.0 sec 512 MBytes 429 Mbits/sec If I change the client and the server the bandwidth change. Cmd nano: iperf -c 192.168.1.47 -I 1 (ip 192.168.1.50) (nano is in listening mode TCP) Cmd s10+: iperf -s -i Result on nano: ------------------------------------------------------------ Client connecting to 192.168.1.47, TCP port 5001 TCP window size: 85.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.1.50 port 50168 connected with 192.168.1.47 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 1.0 sec 21.9 MBytes 184 Mbits/sec [ 3] 1.0- 2.0 sec 1.74 MBytes 14.6 Mbits/sec [ 3] 2.0- 3.0 sec 0.00 Bytes 0.00 bits/sec [ 3] 3.0- 4.0 sec 0.00 Bytes 0.00 bits/sec [ 3] 4.0- 5.0 sec 0.00 Bytes 0.00 bits/sec [ 3] 5.0- 6.0 sec 7.12 MBytes 59.8 Mbits/sec [ 3] 6.0- 7.0 sec 16.5 MBytes 138 Mbits/sec [ 3] 7.0- 8.0 sec 15.6 MBytes 131 Mbits/sec [ 3] 8.0- 9.0 sec 15.4 MBytes 129 Mbits/sec [ 3] 9.0-10.0 sec 21.9 MBytes 184 Mbits/sec [ 3] 0.0-10.1 sec 100 MBytes 83.1 Mbits/sec My conclusion the module AX200 seems to work in AC just in RX mode. The TX mode seems to be bugged. Kernel used: 4.9.140-tegra Firmware of the AX200 module: iwlwifi-cc-a0-48.ucode Driver: git clone --single-branch --branch release/core45 https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git cd backport-iwlwifi/ make defconfig-iwlwifi-public sed -i 's/CPTCFG_IWLMVM_VENDOR_CMDS=y/# CPTCFG_IWLMVM_VENDOR_CMDS is not set/' .config make -j4 make install Could you help me to resolve this issue ? But maybe there is no solution… Best regards Geo -- Geoffroy LETOURNEUR Embedded Software Engineer, SSIC, Paris Email: g.letourneur@xxxxxxxxxxx<mailto:g.letourneur@xxxxxxxxxxx> Tel: +33 6 45 14 24 32
