New HP Chromebook cannot connect to AR-750S-ext's 5G wifi

Technical Support for Routers
1

Hi,

I recently got a new HP Chromebook (14a-na0060nr) but it cannot connect to AR-750S-ext’s 5G wifi network. It can connect to 2.4G wifi network. All other android devices (phone and tablet) can connect to both 2.4G and 5G networks without any problem. Can someone help me figure out what causes the issue and how to fix it?

Note that the chromebook can make a connection to home wifi AP (TP-Link AX11000 MU-MIMO Tri-Band Gaming Router) well for both 2.4G and 5G.

I did grab “logread” output via ssh when the Chromebook made network on 2.4G and when it was attempting to connect 5G network:

2.4G

Sun Jul 25 12:42:45 2021 daemon.notice hostapd: wlan1: AP-STA-DISCONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:42:45 2021 daemon.info hostapd: wlan1: STA 5c:ba:ef:22:1a:89 IEEE 802.11: authenticated
Sun Jul 25 12:42:45 2021 daemon.info hostapd: wlan1: STA 5c:ba:ef:22:1a:89 IEEE 802.11: associated (aid 1)
Sun Jul 25 12:42:45 2021 daemon.notice hostapd: wlan1: AP-STA-CONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:42:45 2021 daemon.info hostapd: wlan1: STA 5c:ba:ef:22:1a:89 RADIUS: starting accounting session CB1D5A883A67AEED
Sun Jul 25 12:42:45 2021 daemon.info hostapd: wlan1: STA 5c:ba:ef:22:1a:89 WPA: pairwise key handshake completed (RSN)
Sun Jul 25 12:42:46 2021 daemon.info dnsmasq-dhcp[26739]: DHCPREQUEST(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:42:46 2021 daemon.info dnsmasq-dhcp[26739]: DHCPACK(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89

5G

Sun Jul 25 12:44:40 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: authenticated
Sun Jul 25 12:44:40 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: associated (aid 3)
Sun Jul 25 12:44:40 2021 daemon.notice hostapd: wlan0: AP-STA-CONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:40 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 RADIUS: starting accounting session 47004494AE006AFE
Sun Jul 25 12:44:40 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 WPA: pairwise key handshake completed (RSN)
Sun Jul 25 12:44:41 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:41 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:46 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:46 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:54 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:44:54 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:10 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:10 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:10 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:14 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: authenticated
Sun Jul 25 12:45:14 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: associated (aid 3)
Sun Jul 25 12:45:14 2021 daemon.notice hostapd: wlan0: AP-STA-CONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:14 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 RADIUS: starting accounting session 4514921AECBF63A7
Sun Jul 25 12:45:14 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 WPA: pairwise key handshake completed (RSN)
Sun Jul 25 12:45:15 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:15 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:18 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:18 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:26 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:26 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:42 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:42 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:44 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:48 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: authenticated
Sun Jul 25 12:45:48 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 IEEE 802.11: associated (aid 3)
Sun Jul 25 12:45:48 2021 daemon.notice hostapd: wlan0: AP-STA-CONNECTED 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:48 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 RADIUS: starting accounting session 814D7E164C6592F1
Sun Jul 25 12:45:48 2021 daemon.info hostapd: wlan0: STA 5c:ba:ef:22:1a:89 WPA: pairwise key handshake completed (RSN)
Sun Jul 25 12:45:48 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:48 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:53 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:45:53 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:46:00 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:46:00 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:46:17 2021 daemon.info dnsmasq-dhcp[26739]: DHCPDISCOVER(br-lan) 5c:ba:ef:22:1a:89
Sun Jul 25 12:46:17 2021 daemon.info dnsmasq-dhcp[26739]: DHCPOFFER(br-lan) 192.168.2.198 5c:ba:ef:22:1a:89
Sun Jul 25 12:46:18 2021 daemon.notice hostapd: wlan0: AP-STA-DISCONNECTED 5c:ba:ef:22:1a:89

Thanks!

2

Additional information:

Wi-Fi Security: WPA2-PSK
SSID Visibility: Shown
Wi-Fi Mode: 802.11a/n/ac
Bandwidth: 20/40/80 MHz
Channel: 161 (got through the Channel Optimization button)
TX Power (dBm): High

The firmware version is 3.201.

3

If the channel is 36 or 40, can you chromebook detect?

The log is from the router, right? Seems nothing special.

4

I tried most of the available channels but didn’t have any luck. The logs were from my router. As it shows, the router offered an IP address but the Chromebook, somehow, did not accept it.

BTW, eventually, I decided to return the Chromebook.

5

On Chromebooks - one thing that is useful is to grab the output of the network diagnostics from crosh…

network_diag
Usage: /usr/bin/network_diag [--date|--flimflam|--link|--wifi|--help] [host]
    --date:      Diagnose time-of-day
                 ([host] must support SSL)
    --dhcp:      Display DHCP information
    --flimflam:  Diagnose flimflam status
    --hosts:     Diagnose SSL connection to Google hosts
    --interface: Diagnose interface status
    --latency:   Diagnose link-latency to default gateway
    --link:      Diagnose all network links
    --no-log:    Do not log output
    --proxy:     Specify proxy to use with tests
    --route:     Diagnose routes to each host
    --wifi:      Display driver-specific debugging information
    --help:      Display this message
    [host]       Hostname to perform web access test on  (default: clients3.google.com)
6

Two years ago, we have a case that Chromebook does not connect to MT300N-V2, but can connect to other routers. We did in-depth debug and fixed a bug in the router. So chromebook can connect to MT300N-V2.

But this problem is totally not related to what you met.

Maybe Chromebook’s wifi driver is just buggy.