AMDGPU bug

[Subsentient]

On 2019-11-11 07:35, Kazlauskas, Nicholas wrote:
> On 2019-11-10 7:00 p.m., Subsentient wrote:
>> Hi, I've been experiencing a bug on kernels 5.2 and up that 
>> apparently is uncommon and/or unimportant enough to have both threads 
>> mentioning it die.
>>
>> On a Ryzen 3 2200G, the amdgpu driver fails upon lightdm login:
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=1752188
>>
>> I thought I'd bring this to your attention as the others reporting 
>> this bug have so far been met with silence, and this has trapped me 
>> and others on the unsupported kernel 5.1.21.
>>
>> Thanks for your time.
>>
>>
>>
>> _______________________________________________
>> amd-gfx mailing list
>> amd-gfx at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/amd-gfx
>>
>
> I'm not sure that the backtrace listed is particularly relevant for 
> describing what issue is actually occurring, but if I had to take a 
> guess based on the ASIC and kernel version I would imagine that it's 
> Raven's displayable DCC support that's causing you issues.
>
> I believe you'd need to be running mesa, xf86-video-amdgpu and running 
> without a compositor in your desktop manager. Does this describe your 
> setup?
>
> If you can bisect that would help narrow things down further. The 
> bisect commit would likely be one that's just changing the amdgpu 
> version number if it's DCC (since mesa checks that before deciding to 
> enable displayable DCC).
>
> Nicholas Kazlauskas

Afternoon. My apologies for the extended delay, I have an extremely busy 
schedule and it takes a rare combination of time and energy for me to be 
able to deal with such matters.

I'm afraid it doesn't appear to be DCC, as I have been using 
"RADV_DEBUG=nodcc", and I am not using Xorg's amdgpu driver. The 
xorg-x11-drv-amdgpu package isn't installed.

I am running with Compiz for a compositor on XFCE4, but the hang occurs 
well before my time-delayed script can execute Compiz. My 2200G remains 
broken in kernel 5.4.1. I am still stranded on 5.1.21.

I appreciate any insight or suggestions.

Thanks.