Re: [PATCH v3 2/2] drm/amd: Add power_saving_policy drm property to eDP connectors

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Hi

Am 01.08.24 um 14:33 schrieb Jani Nikula:
On Mon, 01 Jul 2024, Xaver Hugl <xaver.hugl@xxxxxxxxx> wrote:
Am Do., 20. Juni 2024 um 22:22 Uhr schrieb Xaver Hugl <xaver.hugl@xxxxxxxxx>:
Merging can only happen once a real world userspace application has
implemented support for it. I'll try to do that sometime next week in
KWin
Here's the promised implementation:
https://invent.kde.org/plasma/kwin/-/merge_requests/6028
The requirement is that the userspace patches must be reviewed and ready
for merging into a suitable and canonical upstream project.

Are they?

I already saw this series in today's PR for drm-misc-next. :/

Best regards
Thomas



BR,
Jani.


In testing with the patches on top of kernel 6.9.6, setting the
property to `Require color accuracy` makes the sysfs file correctly
report "Device or resource busy" when trying to change the power
saving level, but setting the property to zero doesn't really work.
Once KWin sets the property to zero, changing the power saving level
"works" but the screen blanks for a moment (might just be a single
frame) and reading from the file returns zero again, with the visuals
and backlight level unchanged as well.

--
--
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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