Hello Adrian!

Thanks for the idea.

I tried with just "ifconfig wlan0 up". Indeed it seems that the "scan" is redundant, as wlandebug output shows that a scan is started immediately after I issue the "ifconfig wlan0 up" command. Alas, the scan result is still the same as in my original message, and "ifconfig wlan0 list scan" shows no results.

On Mon, 30 Dec 2013 Adrian Chadd <adr...@freebsd.org> wrote:

Don't do up scan.

Just do

ifconfig wlan0 up

ifconfig wlan0 list scan

There may be some stupid race conditions there.

-a


On 30 December 2013 10:36, Toomas Aas <toomas....@raad.tartu.ee> wrote:
Hello!

I posted a request on the FreeBSD forums on this topic, but got no
responses:
http://forums.freebsd.org/viewtopic.php?f=46&t=43895

So, I'll repeat it here hoping that it may catch the attention of some
experts who are maybe not following the forums.

I'm trying to get TP-Link TL-WN727N V3 USB wifi adapter working with my
FreeBSD 9.2-STABLE amd64 system (r259472). It seems to me that this adapter
uses Ralink RT5370 chipset, and support for this was merged to 9-STABLE in
r259457.

I plug in the adapter and it seems to be recognized:

Dec 18 18:13:15 kernel: ugen2.2: <TPlink> at usbus2
Dec 18 18:13:15 kernel: run0: <1.0> on usbus2
Dec 18 18:13:15 kernel: run0: MAC/BBP RT5390 (rev 0x0502), RF RT5370 (MIMO
1T1R), address f8:1a:67:19:40:24

I create the wlan device:

# ifconfig wlan0 create wlandev run0

Then I try to scan, but both of the below commands return immediately
without any result:

# ifconfig wlan0 up scan
# ifconfig wlan0 list scan

I tried running wlandebug -i wlan0 +scan, and an endless supply of following
is recorded in /var/log/messages:

Dec 18 21:47:26 kernel: wlan0: ieee80211_check_scan: active scan, append
Dec 18 21:47:26 kernel: wlan0: ieee80211_scanreq: flags 0x1b duration
0x7fffffff mindwell 0 maxdwell 0 nssid 0
Dec 18 21:47:26 kernel: wlan0: scan_update_locked: current scanner is
<none:none>, switch to <wlan0:STA>
Dec 18 21:47:26 kernel: wlan0: start_scan_locked: active scan, duration
2147483647 mindwell 0 maxdwell 0, desired mode auto, flush
Dec 18 21:47:26 kernel: wlan0: scan set 1g, 6g, 11g, 7g, 2g, 3g, 4g, 5g, 8g,
9g, 10g dwell min 20ms max 200ms
Dec 18 21:47:26 kernel: wlan0: start_scan_locked: active scan already in
progress
Dec 18 21:47:26 kernel: wlan0: scan_task: chan   1b ->   1g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:26 kernel: wlan0: scan_task: chan   1g ->   6g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:27 kernel: wlan0: scan_task: chan   6g ->  11g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:27 kernel: wlan0: scan_task: chan  11g ->   7g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:27 kernel: wlan0: scan_task: chan   7g ->   2g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:27 kernel: wlan0: scan_task: chan   2g ->   3g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:27 kernel: wlan0: scan_task: chan   3g ->   4g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:28 kernel: wlan0: scan_task: chan   4g ->   5g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:28 kernel: wlan0: scan_task: chan   5g ->   8g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:28 kernel: wlan0: scan_task: chan   8g ->   9g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:28 kernel: wlan0: scan_task: chan   9g ->  10g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:29 kernel: wlan0: sta_pick_bss: no scan candidate
Dec 18 21:47:29 kernel: wlan0: scan_task: done, restart [ticks 1706420,
dwell min 20 scanend 2149187524]
Dec 18 21:47:29 kernel: wlan0: scan_task: chan  10g ->   1g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:29 kernel: wlan0: scan_task: chan   1g ->   6g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:29 kernel: wlan0: scan_task: chan   6g ->  11g [active, dwell
min 20ms max 200ms]
Dec 18 21:47:29 kernel: wlan0: scan_task: chan  11g ->   7g [active, dwell
min 20ms max 200ms]

I've watched this output for 10 minutes and it just seems to go on
indefinitely. I'm not sure what to think of this. There are several access
points near me that the scan should find, but it doesn't. When I plug in the
same adapter to a laptop with Windows 7, it successfully shows the nearby
access points and allows me to connect to one, so the adapter is not broken.
Any ideas for further troubleshooting are welcome.

--
Toomas Aas

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--
Toomas Aas
Tartu linnakantselei arvutiv├Árgu peaspetsialist
tel 736 1274
mob 513 6493
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