Dear CCP4BBers,
I have done a few tests with different desktop environments and 3D
stereo, recently:
For Gnome3 with Fedora and EL8 (clones), enabling 3D stereo works
without switching off COMPOSITE in the xorg.conf. Enabling/disabling 3D
stereo leads to some additional visible switching of the graphics with
~1 second delay (I assume COMPOSITE is disabled/enabled behind the
scenes). However, this does not work for Debian Buster, meaning, you
can't use Gnome3 together with 3D stereo, there.
Interestingly, for the following desktop environments, there is no need
to switch off COMPOSITE in the xorg.conf, since this can be done during
your graphical session in the desktop settings. After that, 3D stereo
works (tested on Debian Buster). Not switching off COMPOSITE in the
xorg.conf has the advantage that the user may also use Gnome3 for the
desktop environment.
For switching compositing on/off, please check/uncheck the following
settings in the tested desktop environments:
Plasma5: Settings -> Display and Monitor -> Compositor -> Enable display
compositing
MATE: Control Center -> Windows -> General -> Enable software
Compositing manager
XFCE: Settings -> Window Manager Tweaks -> Compositor -> Enable display
compositing
I hope that helps.
Cheers,
Dirk.
On 1/15/20 8:52 AM, "Weiergräber, Oliver H." wrote:
Note that the more recent versions of EL7 no longer require compositing to be
disabled for nVidia stereo to work with Gnome3.
Cheers,
Oliver
==================================================
PD Dr. Oliver H. Weiergräber
Institute of Biological Information Processing
IBI-7: Structural Biochemistry
Tel.: +49 2461 61-2028
Fax: +49 2461 61-9540
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________________________________________
From: CCP4 bulletin board [CCP4BB@JISCMAIL.AC.UK] on behalf of David J.
Schuller [schul...@cornell.edu]
Sent: 14 January 2020 22:58
To: CCP4BB@JISCMAIL.AC.UK
Subject: Re: [ccp4bb] nVidia 3D Vision2 glasses
Which Linux and which desktop?
Attached find a typical functional /etc/X11/xorg.conf file for stereo use from
a Scientific Linux 7 machine.
The two notable things about this file:
"STEREO" is enabled in the "Screen" section.
"COMPOSITE" is disabled in the "Extensions" section.
With some newer desktops such as Gnome 3 it is not possible to disable
composite. Try using the XFCE or Mate desktop.
On 2020-01-14 15:43, Oganesyan, Vaheh wrote:
Colleagues,
While on stereo issues here is problem I’m trying to resolve with community
help:
my hardware includes nVidia quadro FX1400, Xpand emiter and NewVision glasses.
Driver taken from nVIDIA site specifically for Quadro FX 1400, long lived. On
old Linux station these worked together fine for PyMOL and O. On newer machine
PyMOL doesn’t complain but doesn’t show stereo either. “O” complains:
freeglut (/home/Vaheh/o/bin/170211_lin64_ono): ERROR: Internal error <FBConfig
with necessary capabilities not found> in function fgOpenWindow
and quits.
Will appreciate help on resolving this issue.
Regards,
Vaheh Oganesyan, Ph.D.
Scientist, Biologic Therapeutics
____________________________________________________________________
AstraZeneca
R&D | Antibody Discovery and Protein Engineering
One Medimmune Way, Gaithersburg, MD 20878
T: 301-398-5851
vaheh.oganes...@astrazeneca.com<mailto:oganesy...@medimmune.com>
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