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-rw-r--r--docs/misc/index.md4
1 files changed, 4 insertions, 0 deletions
diff --git a/docs/misc/index.md b/docs/misc/index.md
index 02e715d8..51c53c2c 100644
--- a/docs/misc/index.md
+++ b/docs/misc/index.md
@@ -130,6 +130,8 @@ You can set values:
sudo intel_reg write 0x00061254 your_value_in_C_hex_format
+NOTE: on older versions of this utility, use `intel_reg_write` instead.
+
The value set has the following structure: bits \[31:16\] is PWM
divider. PWM / PWM\_divider = frequency bits \[15:0\] is the duty cycle
and determines the portion of the backlight modulation frequency. A
@@ -164,6 +166,8 @@ Next this value should be set at boot: either add
intel_reg write 0x00061254 &ltyour_ideal_value>
+NOTE: on older versions of this utility, use `intel_reg_write` instead.
+
before exit 0 in /etc/rc.local or create a systemd service file
/etc/systemd/system/backlight.service:
[Unit]