Arch Linux

jeremija

Member

Registered: 2016-10-09

Posts: 9

DWA-160 B2 802.11abgn - can't ping with RT5572 driver

I'm having some trouble configuring DWA-160 B2 802.11abgn USB card:

Bus 001 Device 003: ID 2001:3c1a D-Link Corp. DWA-160 802.11abgn Xtreme N Dual Band Adapter(rev.B2) [Ralink RT5572]

The card works out of the box via the kernel module rt2800usb. I wanted to try out the rt2870 module provided by the rt5572 driver as described here:

- https://wiki.archlinux.org/index.php/Wi … ion#rt5572
- http://bernaerts.dyndns.org/linux/74-ub … a160-revb2

The driver: http://cdn-cw.mediatek.com/Downloads/li … 22.tar.bz2

I managed to successfully patch, compile and install that module. I can connect to my wifi network via wpa_supplicant:

$ sudo wpa_supplicant -i ra0 -D wext -c /etc/wpa_supplicant/example.conf
Successfully initialized wpa_supplicant
rfkill: Cannot get wiphy information
ra0: Trying to associate with 50:c7:xx:xx:xx:xx (SSID='xxxxxxx' freq=5785 MHz)
ra0: Association request to the driver failed
ra0: Associated with 50:c7:xx:xx:xx:xx
ra0: WPA: Key negotiation completed with 50:c7:xx:xx:xx:xx [PTK=CCMP GTK=CCMP]
ra0: CTRL-EVENT-CONNECTED - Connection to 50:c7:xx:xx:xx:xx completed [id=0 id_str=]

$ iwconfig ra0
ra0       Ralink STA  ESSID:"xxxxxxx"  Nickname:"RT2870STA"
          Mode:Managed  Frequency=5.785 GHz  Access Point: 50:C7:BF:xx:xx:xx
          Bit Rate=270 Mb/s
          RTS thr:off   Fragment thr:off
          Link Quality=100/100  Signal level:-50 dBm  Noise level:-82 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

But I am unable to ping the router or any local devices:

$ sudo ip addr add 192.168.0.200/24 broadcast 192.168.0.255 dev ra0
$ ip addr show ra0
9: ra0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
    link/ether c4:a8:1d:xx:xx:xx brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.200/24 brd 192.168.0.255 scope global ra0
       valid_lft forever preferred_lft forever

$ ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
From 192.168.0.200 icmp_seq=1 Destination Host Unreachable
From 192.168.0.200 icmp_seq=2 Destination Host Unreachable

And of course, the DHCP client fails to obtain the IP address:

$ sudo dhcpcd ra0 -4 -d
dhcpcd-6.11.5 starting
ra0: executing `/usr/lib/dhcpcd/dhcpcd-run-hooks' PREINIT
ra0: executing `/usr/lib/dhcpcd/dhcpcd-run-hooks' CARRIER
DUID 00:01:00:01:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx
ra0: IAID xx:xx:xx:xx
ra0: delaying IPv4 for 0.6 seconds
ra0: soliciting a DHCP lease
ra0: sending DISCOVER (xid 0x2135dca0), next in 4.5 seconds
ra0: sending DISCOVER (xid 0x2135dca0), next in 7.5 seconds
ra0: sending DISCOVER (xid 0x2135dca0), next in 15.2 seconds
ra0: sending DISCOVER (xid 0x2135dca0), next in 32.5 seconds
timed out
dhcpcd exited

Needless to say, everything above works normally via the rt2800 driver, but the speed is <100Mbit.

How to figure out what's causing this? Any help is greatly appreciated.

edit: I can ping if I connect to the 2.4GHz network, so it looks like only 5G is the problem.

Last edited by jeremija (2017-05-21 21:51:07)