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[Tasp]

I tried it accordingly to:
http://developer.amd.com/support/KnowledgeBase/Lists/KnowledgeBase/DispForm.aspx?ID=19

No luck. Can someone who got this working post his configuration?

[nou]

you can alternatively try this.

set up autologin with some user into Xserver.

then log in via ssh with the same user as is logged in Xserver. do not use -X

export DISPLAY=:0

run any OpenCL/OpenGL application. any GUI windows should appear on screen.

IMHO this is the easyest way.

[Tasp]

I logged in remotley and did:

sudo service gdm stop
sudo /usr/bin/Xorg -br -ac -audit 0

And it works. So it is a problem with the gdm custom.conf file.

*edit*

Here is my solution:

1. Disable gdm via grub (I don't need gdm on a remote machine)
In /etc/default/grub set

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash text"

,
than run update-grub

2. In /etc/X11/Xwrapper.config set

allowed_users=anybody

3. In /usr/bin/startx set

serverargs="-ac"

Done.
Login with ssh and run:

startx &
FindNumDevices

and everything should be fine.