[Bug 93555] Errors on lid close/open, black screen.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93555

--- Comment #20 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Bruno Pagani from comment #19)
> Like I’ve said in https://bugs.freedesktop.org/show_bug.cgi?id=93555#c13,
> waking up on lid open is fixed.
> 
> What remains is:
> 
> – a black screen;
> – an additional stale image from login manager when PSR is enabled.
> 
> So you would say this is DE dependent? Interesting, I’ll have to look a bit
> more into that.

The kernel driver does not enable the displays on its own upon resume. The
userspace has to ask for it.

> Regarding backlight, I’ve filed
> https://bugzilla.kernel.org/show_bug.cgi?id=194675.

Is it an ACPI backlight you have? What does 'ls /sys/class/backlight' say?

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