From bca81be7755d15e7369d764bfa94a7ca6c595c76 Mon Sep 17 00:00:00 2001 From: Topi Miettinen Date: Sun, 1 Feb 2015 08:49:02 +0200 Subject: backlight: let udev properties override clamping On my computer, the minimum brightness enforced by clamping in backlight is too bright. Let udev property ID_BACKLIGHT_CLAMP control whether the brightness is clamped or not. --- man/systemd-backlight@.service.xml | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) (limited to 'man/systemd-backlight@.service.xml') diff --git a/man/systemd-backlight@.service.xml b/man/systemd-backlight@.service.xml index 453afbf1b4..21c6437efa 100644 --- a/man/systemd-backlight@.service.xml +++ b/man/systemd-backlight@.service.xml @@ -58,7 +58,14 @@ is a service that restores the display backlight brightness at early boot and saves it at shutdown. On disk, the backlight brightness is stored in - /var/lib/systemd/backlight/. + /var/lib/systemd/backlight/. During + loading, if udev property + is not set to + false value, the brightness is clamped to a value of + at least 1 or 5% of maximum brightness, whichever is + greater. This restriction will be removed when the + kernel allows user space to reliably set a brightness + value which does not turn off the display. -- cgit v1.2.3-54-g00ecf