[Bug 95015] [drm:.r600_ring_test [radeon]] *ERROR* radeon: ring 0 test failed (scratch(0x8504)=0xCAFEDEAD)

https://bugs.freedesktop.org/show_bug.cgi?id=95015

--- Comment #5 from Rui Salvaterra rsalvaterra@gmail.com --- (In reply to Oded Gabbay from comment #4)

Did you try running a 4.5 kernel ? I added a POWER relevant fix for radeon in 4.5, which relates to caches (c524498 - drm/radeon: mask out WC from BO on unsupported arches)

Hi, Oded

I compiled 4.6-rc6 today and the result is the same (actually, now that I see, the second dmesg I attached is from 4.6-rc4). The card works on the x8 slot (behind the DART) but not on the x16 slot (bypassing the DART).

Thanks,

Rui