(In reply to Felix Miata from comment #39) > Which upstream bug tracker and product should I take this to, kernel, ??? I think bugzilla.kernel.org is the way to go for this one, as exchanging the kernel seems to fix/break things and it's either a config change or something broke in the AGP support. Please give me some more time to double check the config before reporting upstream. Also, please check the latest KOTD before any upstream report. Finally, I'm rebuilding the 4.1 kernel in OBS, but if that fails it's not important as I now have two kernel configs to compare (thanks!).