I have had wireless working on a 3.8 BBB for quite some time and I wanted to move to a v4 kernel in the hope that the "lagginess" of the wifi connection would be reduced. I loaded another board with the LTS RT v4 kernel, did apt-get install wireless-tools wireless-regdb crda, and put my ssid and passphrase in /etc/network/interfaces. The results are:
root@beaglebone:~# ifup -vv wlan0 Configuring interface wlan0=wlan0 (inet) run-parts --exit-on-error --verbose /etc/network/if-pre-up.d run-parts: executing /etc/network/if-pre-up.d/wireless-tools dhclient -v -pf /run/dhclient.wlan0.pid -lf /var/lib/dhcp/dhclient.wlan0.leases wlan0 Internet Systems Consortium DHCP Client 4.3.1 Copyright 2004-2014 Internet Systems Consortium. All rights reserved. For info, please visit https://www.isc.org/software/dhcp/ Listening on LPF/wlan0/c4:6e:1f:10:0e:70 Sending on LPF/wlan0/c4:6e:1f:10:0e:70 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 16 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 19 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 5 No DHCPOFFERS received. No working leases in persistent database - sleeping. I must have missed something. I even copied the interfaces file over from the 3.8 machine, but no joy. Of course, I also went from Wheezy to Jessie. The hardware is a TP-Link WN722N (Atheros) that I haven't had any problems with - in fact it does an "iwlist wlan0 scan" just fine in the new machine. This seems to a software problem. It is interesting that even after installing crda and wireless-regdb, dmesg shows: [ 10.512066] ath: EEPROM indicates we should expect a country code [ 10.512073] ath: doing EEPROM country->regdmn map search [ 10.512079] ath: country maps to regdmn code: 0x52 [ 10.512085] ath: Country alpha2 being used: CN [ 10.512090] ath: Regpair used: 0x52 [ 10.552110] ieee80211 phy0: Atheros AR9271 Rev:1 [ 10.638305] cfg80211: Regulatory domain changed to country: CN To be complete, ifconfig shows: wlan0 Link encap:Ethernet HWaddr c4:6e:1f:10:0e:70 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) and iwconfig wlan0 shows: wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off and this is the interfaces file: auto wlan0 iface wlan0 inet dhcp wpa-ssid "my_ssid" wpa-psk "my_passphrase" I would appreciate any help that you can provide, Tim -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
