Upstream mesa developer Brian Paul fixed that mesa bug instantly, unfortunately that seemed to be a spurious warning only. It doesn't really explain why you get a black screen.
I think running with --debug as explained in the previous comment is a much better lead at this time. Let's continue investigating that trail further instead... maybe the screen is black just because the image fails to load.
Upstream mesa developer Brian Paul fixed that mesa bug instantly, unfortunately that seemed to be a spurious warning only. It doesn't really explain why you get a black screen.
I think running with --debug as explained in the previous comment is a much better lead at this time. Let's continue investigating that trail further instead... maybe the screen is black just because the image fails to load.