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HowToRunX2GO.md

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How to Run x2go

About x2go

X2Go enables you to access a graphical desktop of a computer over a low bandwidth (or high bandwidth) connection. In x2go only mode,if using terasic's hardware templates which includes no vedio ip core to build the OpenCL aocx file,you can get more fpga resouce for OpenCL.

Install x2go server in sd card

To install add-apt-repository on Ubuntu

sudo apt-get install software-properties-common

Once add-apt-repository is installed, run these commands

sudo add-apt-repository ppa:x2go/stable
sudo apt-get update
sudo apt-get install x2goserver x2goserver-xsession

LXDE bindings

sudo apt-get all x2golxdebindings

Install the x2goclient on PC

For Ubuntu

sudo apt-add-repository ppa:x2go/stable
sudo apt-get update
sudo apt-get install x2goclient

For Windows

https://code.x2go.org/releases/binary-win32/x2goclient/releases/4.1.1.1-2018.03.01/x2goclient-4.1.1.1-2018.03.01-setup.exe

x2go login

  1. check the host IP on board.
  2. login user: knat password: knat.
  3. using "sudo su" to get root privileges

Differences between VIP Core and X2GO only

In x2go only mode,there is no vip logic in rbf(aocx) and vip driver will not be loading.

Item VGA or HDMI (VIP Core) X2GO only (Ethernet)
Hardware template de10_nano_sharedonly_hdmi de10_nano_sharedonly (form terasic)
opencl.rbf contain VIP core no VIP Core
socfpga.dtb contain VIP core description no VIP core description
init_opencl_16.1.sh add CL_CONTEXT_COMPILER_MODE_ALTERA=3 delete CL_CONTEXT_COMPILER_MODE_ALTERA=3
init_opencl_17.1.sh add CL_CONTEXT_COMPILER_MODE_INTELFPGA=3 delete CL_CONTEXT_COMPILER_MODE_INTELFPGA=3
host reprogram fpga manual (by aocl program look here) enable

how to do x2go only

  1. get terasic's hardware templates,such as de10_nano_sharedonly,which includes no vedio ip core to build the OpenCL aocx file and rbf file.

  2. update the device tree block file with the one which contains no vedio ip core descriptoin,such as socfpga_cyclone5_de10_nano_x2go.dtb.

  3. delete the CL_CONTEXT_COMPILER_MODE_xxx flag in initial shell file.

  4. install x2go server in sd card

  5. add '#' as following in rc.local to disable loading the altvipfb driver .(for c5soc_opencl_lxde_fpga_reconfigurable.img)

#modprobe altvipfb
#service lightdm start