Comment # 10
on bug 100964
from Maxim Cournoyer
A few more data points. None of the 'vanilla' kernel could initialize the R9
285 (tonga 1.2) card on this Asus M2N SLI Deluxe card (remember that the same
card works easily on an Asus P5W DH Deluxe based system).
I've tried building the following kernels (reusing the Debian 9 stable 4.9.0
kernel config as a starting point) and booted them, but I would always get a
CAFEDEAD error:
* 4.11.0 from stretch-backports (didn't need to build this one)
* 4.12.7 from kernel.org
* 4.13.0-rc4-1 from kernel.org
None of them worked. So my only success so far is with the drm-next-4.14-wip
branch from git://people.freedesktop.org/~agd5f/linux.
I've included the dmesg I get when booting off the 4.13.0-rc4 kernel, it has
new error output talking about powerplay:
[ 5.514767] amdgpu: [powerplay]
failed to send message 254 ret is 0
[ 5.514793] amdgpu: [powerplay] Can't find requested voltage id in
vdd_dep_on_sclk table!
[ 5.515491] amdgpu: [powerplay] Invalid VDDGFX value!
[ 5.515491] amdgpu: [powerplay] Get EVV Voltage Failed. Abort Driver
loading!
[ 5.515493] amdgpu: [powerplay] amdgpu: powerplay initialization failed
[ 5.703544] [drm:gfx_v8_0_ring_test_ring [amdgpu]] *ERROR* amdgpu: ring 0
test failed (scratch(0xC040)=0xCAFEDEAD)
[ 5.703601] [drm:amdgpu_device_init [amdgpu]] *ERROR* hw_init of IP block
<gfx_v8_0> failed -22
[ 5.703630] amdgpu 0000:03:00.0: amdgpu_init failed
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