I’ve recently flashed to L4T R21.4, and my USB wifi adapter (RTL8191SU-based) has stopped working.
I believe I am using the latest grinch kernel (details below). The USB device is listed, it appears the correct kernel module is loaded (r8712u), but nmcli does not display the device.
Have any of you come across something similar?
ubuntu@tegra-ubuntu:~$ head -n 1 /etc/nv_tegra_release
# R21 (release), REVISION: 4.0, GCID: 5650832, BOARD: ardbeg, EABI: hard, DATE: Thu Jun 25 22:38:59 UTC 2015
ubuntu@tegra-ubuntu:~$ uname -a
Linux tegra-ubuntu 3.10.40-grinch-21.3.4 #1 SMP PREEMPT Fri May 1 10:41:09 UTC 2015 armv7l armv7l armv7l GNU/Linux
ubuntu@tegra-ubuntu:~$ lsusb
Bus 002 Device 002: ID 0bda:8172 Realtek Semiconductor Corp. RTL8191SU 802.11n WLAN Adapter
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
ubuntu@tegra-ubuntu:~$ lsmod
Module Size Used by
dm_crypt 12216 0
dm_mod 67166 1 dm_crypt
r8712u 156323 0
bnep 9804 2
rtc_as3722 3709 0
rfcomm 33654 0
bluetooth 279634 10 bnep,rfcomm
rfkill 9587 3 bluetooth
parport_pc 28514 0
lp 8097 0
parport 27466 2 lp,parport_pc
nvhost_vi 2874 0
nfsd 237014 0
ubuntu@tegra-ubuntu:~$ nmcli dev
DEVICE TYPE STATE
eth0 802-3-ethernet unavailable