Re: [PATCH] HID: logitech-hidpp: support Color LED feature (8071).

Hi!

Yeah the SetBrightness in systemd / logind should work out of box.

Though I just noticed something: For this to be useful, the default
multi_intensity for each component of the multicolor LED in the kernel should be set to
max_brightness, effectively producing white (on RGB LEDs at least).

Agreed we should have multi_intensity set to something nonzero. Note
that max on all channels may not result in white.

Now there are three solutions:

1) Naming the Logitech LEDs <device>:rgb:kbd_backlight-N even on mice
and at some point send a patch to systemd adapting the udev rules to
care for devices with nuemrical suffixes.

2) Naming the LEDs <device>:rgb:backlight-N and send a patch to systemd
adding a new udev rule to cater for backlight LEDs in general.

If it is known to be mouse, use mouse_backlight or something like
that. Just document it so that others use same string.

Best regards,
								Pavel
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