https://bugs.freedesktop.org/show_bug.cgi?id=100189
--- Comment #12 from Marek Olšák maraeo@gmail.com --- The i915 gallium driver is unmaintained and not even supported by its manufacturer. This bug report starts its deprecation period. If the driver remains in a broken state for a while, it will be removed from Mesa. Feel free to ignore this bug. Cheers. :)