"firmware/sysfb: Set firmware-framebuffer parent device" breaks lightdm on Ubuntu 22.04 using amdgpu

[Thomas Zimmermann]

Hi

Am 19.06.24 um 20:40 schrieb Marek Olšák:
> Attached is the revert commit that works for me. Tested with Radeon
> 6800 and Radeon 7900XTX.

Thanks. That's the same revert that I did. Let's see if my bisecting 
turns up something.

Best regards
Thomas

>
> Marek
>
>
> Marek
>
> On Wed, Jun 19, 2024 at 9:50 AM Thomas Zimmermann <tzimmermann at suse.de> wrote:
>> Hi
>>
>> Am 13.06.24 um 07:59 schrieb Marek Olšák:
>>> Hi Thomas,
>>>
>>> Commit 9eac534db0013aff9b9124985dab114600df9081 as per the title
>>> breaks (crashes?) lightdm (login screen) such that all I get is the
>>> terminal. It's also reproducible with tag v6.9 where the commit is
>>> present.
>> I was able to reproduce the problem with Ubutu 22.04 and later under
>> qemu plus qxl, sort of. I login via gdm3 and then the quest machine
>> switches off entirely.
>>
>>> Reverting the commit fixes lightdm. A workaround is to bypass lightdm
>>> by triggering auto-login. This is a bug report.
>> The problem is that reverting the commit doesn't fix the issue for me.
>> I'll try to do my own bisecting.
>>
>> Best regards
>> Thomas
>>
>>> (For AMD folks: It's also reproducible with amd-staging-drm-next.)
>>>
>>> Marek
>> --
>> --
>> Thomas Zimmermann
>> Graphics Driver Developer
>> SUSE Software Solutions Germany GmbH
>> Frankenstrasse 146, 90461 Nuernberg, Germany
>> GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
>> HRB 36809 (AG Nuernberg)
>>

-- 
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)