How to install VirtualGL in Slackware 14.2?

ahTh6aaf · 12-03-2017, 10:41 PM

Hello!

I want to stream games to my old laptop from my slackware 14.2 machine. However, when I tried to install VirtualGL I'm having some issues following the configuration found in https://virtualgl.org/vgldoc/2_2_1/#hd005 ... I downloaded the source code, compiled and created the .txz file for the 32 and 64 versions following the BUILDING.md file.

I am able to do installpkg and run /opt/VirtualGL/bin/vglserver_config (y/y/n) which finished with an error related to nvidia:

Code:

rmmod: ERROR: module nvidia is in use by: nvidia_modeset

I added the root and my user to the vglusers group, rebooted, then connected via ssh to do the Sanity Check but in the command:

Code:

xdpyinfo -display :0

I'm getting:

Code:

Invalid MIT-MAGIC-COOKIE-1 keyxdpyinfo: unable to open display ":0"

Also, when I connect via VNC and when I run any program with vglrun, I'm getting the error:

Code:

ERROR: ld.so: object 'libdlfaker.so' from LD_PRELOAD cannot be preloaded: ignored.

Also, when I try to play dota I'm getting an OpenGL error :/
I'm running out of ideas with this program...

Thanks for any help!

Drakeo · 12-03-2017, 11:44 PM

https://virtualgl.org/Main/HomePage
you want to use the uodated one that page you had was very old.
it all has been moved to github

https://github.com/VirtualGL/virtual...er/BUILDING.md

ahTh6aaf · 12-06-2017, 11:48 AM

Thanks for your reply.

I reinstalled vgl following the building instructions again, 32 and 64bit but vglserver_config gave the same error about nvidia:

Code:

# /opt/VirtualGL/bin/vglserver_config 

1) Configure server for use with VirtualGL
2) Unconfigure server for use with VirtualGL
X) Exit

Choose:
1

Restrict 3D X server access to vglusers group (recommended)?
[Y/n]
y

Restrict framebuffer device access to vglusers group (recommended)?
[Y/n]
y

Disable XTEST extension (recommended)?
[Y/n]
n
... Creating vglusers group ...
groupadd: group 'vglusers' already exists
Could not add vglusers group (probably because it already exists.)
... Granting read permission to /etc/opt/VirtualGL/ for vglusers group ...
... Creating /etc/modprobe.d/virtualgl.conf to set requested permissions for
    /dev/nvidia* ...
... Attempting to remove nvidia module from memory so device permissions
    will be reloaded ...
rmmod: ERROR: Module nvidia is in use by: nvidia_modeset
... Granting write permission to /dev/nvidia0 /dev/nvidiactl for vglusers group ...
... Granting write permission to /dev/dri/card0 for vglusers group ...
... Modifying /etc/X11/xorg.conf.d/99-virtualgl-dri to enable DRI permissions
    for vglusers group ...
... Adding vglgenkey to /etc/X11/xdm/Xsetup_0 script ...
... Enabling XTEST extension in /etc/X11/xdm/Xservers ...
... Setting default run level to 5 (enabling graphical login prompt) ...

Done. You must restart the display manager for the changes to take effect.

IMPORTANT NOTE: Your system uses modprobe.d to set device permissions. You
must execute rmmod nvidia with the display manager stopped in order for the
new device permission settings to become effective.

I ran this command in init 3.

In the same way, after rebooting, when running a program using vglrun I'm getting

Code:

$ vglrun glxgears
ERROR: ld.so: object 'libdlfaker.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.
ERROR: ld.so: object 'libvglfaker.so' from LD_PRELOAD cannot be preloaded (cannot open shared object file): ignored.