How to adjust BRIGHTNESS SCREEN ?

[setti]

Hello,

I've HP-Pavilion dv6534ef laptop I am unable to adjust brightness screen through <fn>+F7 and <fn>+F8 keys ! In general all <fn> combination keys not work except two: one for plus sign and other minus sign !!!

Please how can I avoid this prob.

cheers

[SirDice]

See if loading acpi_video helps.

[setti]

See if loading acpi_video helps.

If it is possible can you show me step by step how can I make fn keys work ? Sorry I have just read [man=4] but I don't understand, I am a newbie :e

All the best

[Beastie]

SirDice means that you should try kloading acpi_video, i.e. kldload acpi_video.
The MIB (SYSCTL) variables mentioned in the man page (acpi_video) can be read and modified using sysctl, e.g. sysctl some.sysctl.variable and sysctl some.sysctl.variable=some_value respectively.

[aragon]

Also look at xbacklight(1).