[chimerax-users] Difficulties running ChimeraX

[Greg Couch]

Turns out that the problem was the system was using the open source 
nouveau Nvidia driver, which is buggy, but is the default.   With Nvidia 
graphics, you must use the proprietary driver from Nvidia.  From the 
Ubuntu command line, run "sudo ubuntu-drivers --gpgpu install".  
Graphically, that can be done from the Settings dialog.  Go to 
Applications, then Additional Drivers (didn't actually test this because 
I don't have access to a comparable system today).  Then install the 
Nvidia driver.  You will also find that the proprietary driver is much, 
much faster than the open source one.

     -- Greg

On 7/20/2022 1:31 PM, Greg Couch via ChimeraX-users wrote:
> Did you install ChimeraX 1.4 or 1.3?  We did a major upgrade of the UI 
> toolkit in 1.4 and that might be the issue (we went from Qt 5.15.2 to 
> 6.3.0).  The ChimeraX daily build has a newer version (6.3.1). So 
> please try out the daily build and let us know if that fixes the 
> problem for you.
>
> On Windows, the common solution for bugs like this is to update the 
> graphics driver.   That is less common on Linux, but still a 
> possibility.  If using the daily build doesn't work, then please send 
> me (just me) the output from "lspci | grep VGA" and the output from 
> the glxinfo command (you might have to "sudo apt install mesa-utils" 
> to get it).  And we'll go from there.
>
>     -- Greg
>
> On 7/18/2022 1:43 PM, Douglas Marr via ChimeraX-users wrote:
>> Hey everyone,
>>
>> I've recently updated my laboratory's computer to run linux and 
>> ubuntu 22.04. Afterwards, I installed chimeraX for that distribution 
>> of ubuntu, but whenever I try to run it, the chimeraX will open, but 
>> will be completely frozen. Nothing can be clicked on, nor can the 
>> protein structure be rotated. After a few seconds, the computer 
>> reports that ChimeraX has stopped and gives me the choice to either 
>> wait or force quit. I've tried waiting a very long time, but it 
>> always remains frozen, so I think there must be something wrong with 
>> my install.
>>
>> Do you guys have any advice on how to fix it?
>>
>> Best,
>> Douglas Marr
>>
>>
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