X11 not working on 11-STABLE with AMDGPU

[CL Moonriver]

Sorry for the really delayed response.

Yes, I am 100% sure I am booting with UEFI. And I don't see to have any 
issues. Again, the only bug I still encounter is that occasionally X 
hangs and has to restart the driver. And if I look at the console, I get 
errors about "GPU not responding. Attempting to reset GPU", and so on.


On 08/03/2018 04:22 PM, Greg V wrote:
>
>
> On Fri, Aug 3, 2018 at 2:16 AM, CL Moonriver 
> <clmoonriver at equinedreams.art> wrote:
>> Thanks for the heads up.
>>
>> Are you sure this is still relevant in drm-next? I don't see any 
>> dmesg error about disabling GPU acceleration. I did what you 
>> suggested, but nothing seems to have changed except I get no text 
>> until radeonkms has loaded (I don't get garbage I get nothing at 
>> all). I still get dmesg errors regarding ring test failures and such, 
>> so turning the EFI framebuffer off doesn't appear to have actually 
>> changed anything.
>
> Interesting. Are you 100% sure you're booting with UEFI, not CSM/legacy?
>
> Maybe radeonkms doesn't conflict anymore. Maybe this depends on the 
> GPU model or something?
>
> For amdgpu (RX 480), it's not an error about disabling acceleration, 
> the amdgpu driver *completely* fails to load when EFI framebuffer is 
> active. And I retested a few weeks ago. No one fixed this specifically 
> yet, so I'm not expecting it to magically stop conflicting…
>