misc/178115: Laptop (Asus X55VD) locks up when configuring wifi (Ralink RT5390) from LiveCD mode of official install medium

[Goran Tepshic]

>Number:         178115
>Category:       misc
>Synopsis:       Laptop (Asus X55VD) locks up when configuring wifi (Ralink RT5390) from LiveCD mode of official install medium
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed Apr 24 19:10:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Goran Tepshic
>Release:        9.1-RELEASE amd64
>Organization:
>Environment:
FreeBSD 9.1-RELEASE FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012 root at farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
I bought a new lappy the other day and I thought to power it with FreeBSD but seems it has some sort of problem with my ral0 WiFi chip (Ralink's RT5390) as whenever I try to enable WiFi by creating a wlan0 device and up it from official install DVD's LiveCD mode, the console locks up and I can't even change terminal. Keyboard and screen also lock up; only way out is to hard reset the laptop.

I figured Ralink chips are well supported but this one is giving me a headache for some reason. I tried both amd64 9.1-RELEASE and 10-CURRENT but to no avail.

Here's dmesg output from within the LiveCD:

http://hastebin.com/xabevukora.textile

Also, pciconf -l -v output:
http://hastebin.com/qusaxetapo.textile

I'm trying to configure WiFi by following the Handbook:

Code:
# ifconfig wlan0 create wlandev ral0
wlan0: Ethernet address: a4:17:31:0f:47:94
Code:
# ifconfig wlan0 up scan
And this is the place where everything locks up, on bringing device up. Let me know if I could do anything else. 

Thanks in advance.
>How-To-Repeat:
bring device up by:

# ifconfig wlan0 up
>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: