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Re: [ccp4bb] need help for viewing hardware stereo
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CCP4bb <-- 1999 <-- November 1999 <-- 30 November 1999
Previous message:
Subject: Re: need help for viewing hardware stereo
From: Stuart Endo-Streeter stuart {- dot -} endostreeter {- at -} DUKE {- dot -} EDU
Date: 2007-07-16		Next message:
Subject: Call for MX-beamtime proposals for BESSY-Berlin, Deadline: August 15th 2007
From: Uwe Mueller umue {- at -} BESSY {- dot -} DE
Date: 2007-07-17


Subject: Re: need help for viewing hardware stereo
From: mjvdwoerd {- at -} NETSCAPE {- dot -} NET mjvdwoerd {- at -} NETSCAPE {- dot -} NET
Date: 2007-07-16


It could be a hardware problem or it could be a mis-configuration. The card you list DOES support stereo viewing in all crystallographic applications, I am sure, because we have the same hardware (except our computers are 64 bit and we run CentOS operating system, but otherwise identical).

As others suggested, you might want to download the latest update for the nVidia drivers - even if you have one, updates are always good. Follow their instructions (i.e. boot to init level 3, install the driver with the supplied install file, answer the questions the script asks you (they are very simple, usually default is fine) and boot back to level 5. Then check your xorg.conf file and make sure that it has the

Option "Stereo" "3"

entry.

Please feel free to e-mail me directly if you cannot get it to work. I have not heard before that the Dell/nVidia combination is shipped defective, but everything is possible of course.

Mark







-----Original Message-----
From: venkadesan krishnan
To: CCP4BB@JISCMAIL.AC.UK
Sent: Mon, 16 Jul 2007 5:56 pm
Subject: Re: [ccp4bb] need help for viewing hardware stereo









Dear all,

????????????? I think our earlier posting is not clear. So we would like to draw to your attention regarding our stereo viewing problem. As Dr. Paul Emsley suggested it seems to be a harware problem,
we are experiencing the same problem not only using coot but other programs too. We will be thankful to you if you could
anyone help us to fix the problem
for your kind information here is our system graphics card specification
256MB PClex16 nVidia Quadro Fx? 3450, Dual DVI or Dual VGA or DVI + VGA.

Thanking you
vengadesan




On 7/16/07, Paul Emsley wrote:


Hello venkadesan krishnan,

On Mon, 2007-07-16 at 15:57 -0500, venkadesan krishnan wrote:
> Hello everyone,
>?????????????????????? We have bought a new Dell Precision Workstation
> 690 (32-bit) and installed Fedora core 6. We are having problem while

> viewing molecules in harware stereo mode using programs coot, pymol,
> etc.
> The graphics card came with system is, 256MB PClex16 nVidia Quadro Fx
> 3450, Dual DVI or Dual VGA or DVI + VGA. In coot it shows the

> following message in the terminal,
>
> WARNING:: Can't enable stereo visual - falling back
> INFO:: Hardware stereo widget opened successfully
> INFO:: switch to hardware_stereo_mode succeeded


That is a confusing message.??I can't imagine how you got it if you
simply installed a binary package :-/

However, that code path does mean that Coot failed to get a hardware
stereo graphics context, which leads me to think that it's a hardware

issue, not software.

(Oh, we are talking about 0.3.3, aren't we?)

Paul.












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