Gr-fosphor driver issues

GNU Radio
1

I’m using an AMD radeon HD 7900 in my computer. When i run a flowgraph
that
has an instance of fosphor it shuts down immediately and returns the
following error:

Using Volk machine: avx_64_mmx
[+] Selected device: Tahiti
libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
python2: indirect_init.c:956: __glXNewIndirectAPI: Assertion `o > 0’
failed.

I’ve installed the 14.12 drivers from AMD’s site (on osmo’s site it only
names drivers up to 14.12, even though the current version is 15.12),
there
are 3 choices (proprietary, minimal and developer OGL/OCL), which one
should I use?

I’ve followed the instructions on

I have two laptops successfully running fosphor, but they have nvidia
and
intel video cards, i’ve never worked with AMD before.

any help would be much appreciated

-b

2

Hi,

Using Volk machine: avx_64_mmx
[+] Selected device: Tahiti

^^ That suggest that the OpenCL part is working

libGL error: unable to load driver: swrast_dri.so
libGL error: failed to load driver: swrast
python2: indirect_init.c:956: __glXNewIndirectAPI: Assertion `o > 0’ failed.

^^ Looks like the GL part isn’t. Are you sure you configured your X
server to use the drivers you installed and not some other one ?

Can you check with glxinfo what it says ?

I never worked with AMD myself so sorry I don’t really know how to
properly install or use them …

Cheers,

Sylvain