Mesa lumps all of its drivers together under one vendor named "mesa" so
you are supposed to be able to do something like this:
DRI_PRIME=1 __GLX_VENDOR_LIBRARY_NAME=mesa glxinfo | grep vendor
Unfortunately, Mesa doesn't like something about the GLX fbconfigs the
NVIDIA driver provides, so it doesn't actually work:
libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
X Error of failed request: GLXBadContext
Major opcode of failed request: 152 (GLX)
Minor opcode of failed request: 6 (X_GLXIsDirect)
Serial number of failed request: 62
Current serial number in output stream: 61
-- Aaron
On 3/24/21 6:44 AM, Dan wrote:
On Wednesday, March 24, 2021 2:33 AM, Sérgio Basto <ser...@serjux.com> wrote:
We usually have the opposite problem. we want to enable discrete nvidia card by
default, please try reverse these options [1]
[1]
https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Frpmfusion.org%2FHowto%2FOptimus%23Finer-Grained_Control_of_GLX_.2B-_OpenGL&data=04%7C01%7Caplattner%40nvidia.com%7Cc5eb3f42dc9547fdba5208d8eecc5ff0%7C43083d15727340c1b7db39efd9ccc17a%7C0%7C1%7C637521908842807820%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=a0HaIV6LuWMatH2Vqc%2FWAYYekoKZjqXdVtYjvBn8DGE%3D&reserved=0
I see. I tried the following:
~$ __NV_PRIME_RENDER_OFFLOAD=0 __GLX_VENDOR_LIBRARY_NAME=i965 glxinfo|grep
vendor
server glx vendor string: NVIDIA Corporation
client glx vendor string: NVIDIA Corporation
OpenGL vendor string: NVIDIA Corporation
~$ __NV_PRIME_RENDER_OFFLOAD_PROVIDER=modesetting
__GLX_VENDOR_LIBRARY_NAME=i965 glxinfo |grep vendor
server glx vendor string: NVIDIA Corporation
client glx vendor string: NVIDIA Corporation
OpenGL vendor string: NVIDIA Corporation
~$ __NV_PRIME_RENDER_OFFLOAD_PROVIDER=modesetting
__GLX_VENDOR_LIBRARY_NAME=i965 vainfo
libva info: VA-API version 1.8.0
libva info: Trying to open /usr/xorg/lib64/dri/nvidia_drv_video.so
libva info: va_openDriver() returns -1
vaInitialize failed with error code -1 (unknown libva error),exit
No matter what I try, it always defaults to nvidia.
Maybe I'm doing something wrong?
Thanks!
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