How to avoid this Xvfb error: ES2 Prism: Error - GLX extension is not supported
antoine at nagafix.co.uk
Mon Dec 12 19:27:32 UTC 2016
On 12/12/16 19:51, Long Vu wrote:
> On Mon, Dec 12, 2016 at 1:06 PM, Long Vu <long.vu at intelerad.com> wrote:
>> On Mon, Dec 12, 2016 at 12:20 PM, Adam Jackson <ajax at nwnk.net> wrote:
>>> On Mon, 2016-12-12 at 12:13 -0500, Long Vu wrote:
>>>> Would it be this xvfb-run option ?
>>>> -s ARGS --server-args=ARGS arguments (other than server number and
>>>> "-nolisten tcp") to pass to the Xvfb server
>>>> (default: "-screen 0 640x480x8")
>>>> I am not familiar with X server options, what server args I would need
>>>> to get rid of this "ES2 Prism: Error - GLX extension is not supported"
>>> Yes, I think it would be:
>>> xvfb-run -s "-screen 0 640x480x24" # ... whatever else you use
>> I tried xvfb-run -s "-screen 0 640x480x24", still the same error. Any
>> other clues?
>> ES2 Prism: Error - GLX extension is not supported
>> GLX version 1.3 or higher is required
>> Xlib: extension "RANDR" missing on display ":99".
>> Now that I run at 24 bpp, maybe I should force GLX to be enabled? Or
>> have to specify a GLX version, otherwise the default is less than 1.3?
> I bumped the resolution and manually try to enable GLX, still the same error.
> xvfb-run -s '-screen 0 1024x768x24 +extension GLX +iglx' <command>
> I don't know what else to try.
Your Xvfb on CentOS will not support the GL extension.
If you really must use OpenGL with your client applications:
1) Use Xdummy
2) Use VirtualGL
More information about the xorg