Regression in amd-staging-4.11

[Michel Dänzer]

On 10/07/17 08:00 PM, Martin Babutzka wrote:
> Dear AMD graphics developers,
> 
> I am one of the guys that regularly builds your amd-staging kernels and
> makes them available for the lazier people. By this we get a nice
> preview of DAL/DC and you get some free beta-testers.
> 
> One of the users describe a regression here:
> https://github.com/M-Bab/linux-kernel-amdgpu-binaries/issues/8
> 
> Unfortunately the bug details are limited but I can give some
> additional information to pin the bug down:
> All kernels <= 4.11.3+ (merged with amd-staging-4.11 at Fri May 26
> 18:19:03 2017 +0200) are reported to be working and the regression was
> introduced with the kernels >= 4.11.4+ (merged with amd-staging-4.11 at
> Thu Jun 8 19:44:44 2017 +0200). I attached a list of your commits that
> were merged in this time range. The other attachment is an X.org log
> with the trace when amdgpu should be loaded to run a R7 370 GPU.

The user probably needs to specify

amdgpu.si_support=1 radeon.si_support=0

(instead of blacklisting the radeon driver) to choose the amdgpu kernel
driver for their GPU.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer