Tat, To use ChimeraX with x2go, you need to install virtualgl and then use "vglrun chimerax" to run ChimeraX.  The problem is probably not the 24-bit visual, but the OpenGL support.     -- Greg On 1/27/2021 11:00 AM, Cheng, Tat wrote:

Hi Tom,

Thanks for your message. Here is the error message. I am confused as well, because X2go should be running at 24 bit as I read from the internet.

Tat

------------------------------------------------------------------------ *From:* Tom Goddard <goddard@sonic.net> *Sent:* Wednesday, January 27, 2021 6:48:46 PM *To:* Cheng, Tat *Cc:* chimera-users@cgl.ucsf.edu *Subject:* Re: [Chimera-users] less color depth possible? Hi Tat,

  Chimera has no controls for color depth.  I guess its OpenGL rendering asks for 8-bit color depth for the OpenGL context.  What error does Chimera give?  Using less than 8-bit color depth for visualization is absurd.  X2Go must be able to do 24.

Tom

...

On Jan 27, 2021, at 1:00 AM, Cheng, Tat <tcheng@biochem.mpg.de <mailto:tcheng@biochem.mpg.de>> wrote:

Hi all,

We are trying to set up cryoEM data processing in the university HPC. We use X2go for remote accessing the HPC, but it doesn't have enough color depth, so Chimera (24-bit) doesn't start.

One workaround is to download the volume from HPC to local machine, but it is less convenient. But I wonder is there a way to use Chimera in less color?

Thanks a lot.

Best, Tat _______________________________________________ Chimera-users mailing list:Chimera-users@cgl.ucsf.edu <mailto:Chimera-users@cgl.ucsf.edu> Manage subscription:https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users <https://plato.cgl.ucsf.edu/mailman/listinfo/chimera-users>

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