I assume you rebooted after installing the graphics driver. You can confirm that ChimeraX is using the Nvidia driver by starting ChimeraX and bringing the Report a Bug dialog (in the Help menu), and looking at the OpenGL information is the Gathered Information text box. The top three lines are about OpenGL. For example:
OpenGL version: 3.3.0 NVIDIA 572.70
OpenGL renderer: NVIDIA GeForce GTX 970/PCIe/SSE2
OpenGL vendor: NVIDIA Corporation
If any of those lines don't have NVIDIA in them, then you haven't completely installed the Nvidia driver, or you're trying to run ChimeraX remotely, which is unsupported because of all of the ways it can wrong (it can work). HTH, Greg On 3/19/2025 9:55 AM, ben via ChimeraX-users wrote:
I'm looking for trouble shooting tips on poor graphics performance on linux.
I have read through the FAQ's and done a basic search of the chimera list.
*Observed:* * * /Symptom:/ / / Prohibitively slow rendering when just rotating a map, especially if a model is loaded as well. When using Isolde (and presumably anything with clipper) performance is more "normal" as only a small portion of the map is displayed.
/System:/ / / This is observed on Ubuntu distros (both 20.04 22.04) with their respective Chimerax packages, tested versions 1.6.1 and 1.9.
Nvidia drivers installed via the cuda toolkit (535.183.01 CUDA Version: 12.2 )
GPUs are either rtx 3090 or 4090s
/Point of reference:/ / / Performance is compared to my relatively very underpowered Windows thinkpad w/o discreet graphics.
Thanks for any pointers to resources!
Ben
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