https://bugs.freedesktop.org/show_bug.cgi?id=87856
--- Comment #2 from 65a freedesktopbugs@63bit.net --- It appears that the same issue as mentioned by Michael Danzer is affecting Linux. Setting pixel depth to 16 does resolve the issue, and properly reports Gallium support. I am testing the patches now. Is there any plan to integrate these patches? What work needs to be done?