unable to create ad-hoc mode in jetson tx2

Autonomous Machines Jetson & Embedded Systems Jetson TX2
#1

Hi,
I am trying to create ad-hoc mode in wlan0 on the Jetson TX2.
I tried it in first Jetpack 3.1 + LRT r28.1, it was showing following error:

nvidia@tegra-ubuntu:~ sudo iwconfig wlan0 mode ad-hoc essid test-adhoc Error for wireless request "Set Mode" (8B06) : SET failed on device wlan0 ; Invalid argument. nvidia@tegra-ubuntu:~

The I found in release notes of LRT 28.1, it does not support ad-hoc mode, so I switched to Jetpack 3.0 + LRT r27.1, but it has also the same issue.

can you please help me to figure out whats the problem is?

here is the output of ifconfig and iwconfig:
nvidia@tegra-ubuntu:~$ ifconfig wlan0
wlan0 Link encap:Ethernet HWaddr 00:04:4b:8c:af:f4
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)

nvidia@tegra-ubuntu:~ nvidia@tegra-ubuntu:~ iwconfig
lo no wireless extensions.

dummy0 no wireless extensions.

wlan0 no wireless extensions.

eth0 no wireless extensions.

nvidia@tegra-ubuntu:~$

Thanks,
MJ

#2

Hi MJ, please see the L4T Release Notes, section 3.3, which states that ad-hoc mode isn’t supported.

Access Point (AP) infrastructure mode is working however (see section 2.6). You should still be able to follow this procedure to enable it.

#3

Hi,
The release note is for 28.1, I did saw it earlier, that’s why I moved to 27.1 where the issue still persists.
I could not find any such info in 27.1 release notes.

Can you please confirm whether ad-hoc mode is supported in 27.1 or not?

Thanks,
MJ

#4

Were you able to try the information from this post?

https://devtalk.nvidia.com/default/topic/1024189/jetson-tx2/issue-200327384-wifi-ad-hoc-networking-is-not-supported-and-may-cause-a-system-crash-if-enabled-/post/5212876/#5212876

The user confirmed they were able to use ad-hoc in open mode, or without encryption.

#5

yes, I am following that thread too.
I checked with connect-tech customer service and they confirmed the ad-hoc mode is not supported for now.

#6

Hi, I want to know whether the jetpack3.2 system support wifi ad-hoc mode?
I used to config the local wifi module in tx2 in ad-hoc mode, but this mode doesn’t work. So I try to use a rtl8188eu wifi module to config as the ad-hoc mode, but it does’t work too. (The rtl8188eu module can’t work as ad-hoc mode in other platform like xu4)

#7