https://bugzilla.kernel.org/show_bug.cgi?id=215683

--- Comment #16 from w...@tuxedocomputers.com ---
(In reply to Hans de Goede from comment #15)
> (In reply to Mario Limonciello (AMD) from comment #14)
> > I see that series is reverting your quirks too.  If it works for you, you
> > should add a link to this bug report and a Tested-by for it.
> 
> Right, that series removes the ping-pong where we first register
> /sys/class/backlight/acpi_video0 and then remove it again when e.g.
> /sys/class/backlight/amdgpu_bl shows up. And the whole point of the quirk
> was also to remove that ping-pong since that was causing trouble on the
> quirked models. So now that the ping-pong is generally fixed the quirks
> should no longer be necessary.

Can confirm.

I have one device left to test. Then I will formaly answer on the mailing list.

But I guess the patch series is only for upcomming kernel and not for stable?
So distros using a lts kernel still need the quirk?

> 
> Note I did add wse to the Cc of the patch removing the quirk.

Yes the mail arived shortly after Mario mentioned the patchset, that's why I
found it so fast when the link wasn't working for some reason.

Just had some issues compiling drm-tip today (undefined variable because of
some revert unrelated to the patchset).

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