Comment 3 for bug 1905340

Upstream beignet is dead, and replaced by intel-opencl-icd.

I also don't have that hardware. I've sent a request for testing, but nobody has replied yet:
https://lists.freedesktop.org/archives/beignet/2020-November/date.html

I don't intend to enable them by default without testing, because I consider "gives wrong answers" to be worse than "explicitly fails". Enabling them only with some environment variable set is an option.

It is also fairly likely that beignet will be removed from future Debian/Ubuntu releases because it doesn't work with LLVM 10+.