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

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Hi

Am 13.06.24 um 16:20 schrieb Marek Olšák:
On Thu, Jun 13, 2024 at 3:23 AM Thomas Zimmermann <tzimmermann@xxxxxxx> wrote:
Hi

Am 13.06.24 um 08:00 schrieb Marek Olšák:
+amd-gfx

On Thu, Jun 13, 2024 at 1:59 AM Marek Olšák <maraeo@xxxxxxxxx> wrote:
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.

Reverting the commit fixes lightdm. A workaround is to bypass lightdm
by triggering auto-login. This is a bug report.
I see. Do you know why it crashes? Or have any logs.
How to debug this? I only know it's run through systemctl somehow.

IDK what Ubuntu supports, but 'systemctl status' or 'journalctl' might turn up something.

https://unix.stackexchange.com/questions/225401/how-to-see-full-log-from-systemctl-status-service

From there, maybe with additional fprintf(stderr) output.

Best regards
Thomas


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)





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