Comment by tkinom

Start by tracing exist open source Intel/AMD driver in linux:

   Can be for old laptop (T420, etc with Intel GPU/Driver.) 
   Use FTRACE in kernel. 
   Setup ebpf trace for GPU acitivies.
   Write some doc/blog/medium pages on the process and show off your works.
   Understand, document and improve some opensource GPU API related utilities
   Understand and document interaction between GPU/GUI App and OpenSource driver.

In term of jobs: AMD has 289 opening for intern positions: https://jobs.amd.com/go/Internships-&-Co-op-Opportunities/25... A lot of them are graphic related.