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Hello World Project (continue)

After following the Building the Project from Source, continue on Classifying Images with ImageNet.

As I’m using ssh for remote access from my Mac to the Jetson machine, it is critical to set the environment correctly.

Host Machine (Jetson) Settings

First, edit the file /etc/ssh/sshd_config with sudo permission, adding the following to the beginning:

UseDNS no
X11Forwarding yes
AllowTcpForwarding yes
AllowAgentForwarding yes
TCPKeepAlive yes
PasswordAuthentication no
ChallengeResponseAuthentication no

Note: Only by adding the line X11Forwarding yes is enough for activating the remote X11 function, others are optinoal.

Then execute the following commands:

sudo systemctl restart sshd
sudo apt update
sudo apt install x11-apps

Now the Jetson is ready.

Client Machine (Mac) Settings

First install the XQuartz for the Mac, a X11 support for macOS. After the installation, logout/reboot and login again to activate the support.

The following solution was found here:

Run:

quartz-wm --help

which will output something like

usage: quartz-wm OPTIONS
Aqua window manager for X11.

--version                 Print the version string
--prefs-domain <domain>   Change the domain used for reading preferences
                          (default: org.xquartz.X11)

The last line shows the defaults domain. In this case, check it with

defaults read org.xquartz.X11

and change it with

defaults write org.xquartz.X11 enable_iglx -bool true

restart XQuartz now (by either killing it, logging out and in again or rebooting).

Client Machine (Mac) Checking

Start the ssh connection with -X option for enabling the X11 forwarding, and type in xeyes for start a lightweight X11 app. If XQuartz is launched and shows a pair of eyes, the X11 environment is all set.

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