Hi, we are installing a VirtualGL system on RHEL with an ATI Radeon 4890
card. A few issues came when running vglserver_config:
... Modifying /etc/security/console.perms to disable automatic permissions
for DRI devices ...
The script tries to modify /etc/security/console.perms, but on RHEL5, the
dri permissions are actually set in
/etc/security/console.perms.d/50-default.perms.
... Creating /etc/modprobe.d/virtualgl to set requested permissions for
/dev/nvidia* ...
As I understand it, there is no corresponding file for ATI cards? We have
a /dev/dri/card0.
... Disabling XTEST extension in /etc/gdm/custom.conf .
Doesn't work on this system, but I've now figured out how to do it. This
is what needs to be added to /etc/gdm/custom.conf:
[server-Standard]
command=/usr/bin/Xorg -br -audit 0 -tst
... Commenting out DisallowTCP line (if it exists) in
/etc/gdm/custom.conf ...
This DisallowTCP is default nowadays, it's not just sufficient to search
for this and and comment it out. Instead, we need to add to
/etc/gdm/custom.conf:
[security]
DisallowTCP=false
Btw, another thing that might be good to add is:
AllowRoot=false
Normally, I hate it, but for the VirtualGL case it's probably a good idea.
With these changes, the configuration looks good. However, VirtualGL
doesn't actually seem to work: With software-rendered OpenGL in Xvnc,
glxspheres gives about 5 frames/sec. When running glxspheres through
vglrun, the performance increases only to 11 frames/sec. The :0 Xserver is
idle, except for a few system calls when vglrun i launched. Running:
DISPLAY=:0 glxspheres
...gives a nice performance of ~ 1300 frames/sec. Any ideas?
Best regards,
---
Peter Åstrand ThinLinc Chief Developer
Cendio AB http://www.cendio.com
Wallenbergs gata 4
583 30 Linköping Phone: +46-13-21 46 00
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