https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c5 --- Comment #5 from Thorsten W. Schmidt <thorsten@tws-home.de> 2011-11-24 20:12:39 UTC --- /sys/class/backlight contains acpi_video0 intel_backlight samsung values from intel_backlight max_brightness 312 type raw bl_power -130210976 vales from samsung max_brightness 8 type platform bl_power 0 values from acpi_video0 max_brightnes 7 type firmware bl_power 0 with acpi_video0 I can set the brightness without any problems. But when I try to set the brightness with samsung I get the following echo X > brightness; cat actual_brightness X==0 -> 0 X==1 -> 1 X==2 -> 8 X==3 -> 7 X==4 -> 4 X==5 -> 2 X==6 -> 7 X==7 -> 7 X==8 -> 2 The values I get seem to depend on the brightness I had when changing the brightness. When setting the brightness to 0, 1 or 7 it will stay in this level. All other values set the brightness for a fraction of a second and change it then to a random(?) value. If I set the value several times to the same level, then the brightness level stays on the chosen level. echo 5 > brightness; sleep 1; echo 5 > brightness; cat actual_brightness 5 But when doing the following the screen flickers between dark and bright with about 10-15Hz echo 4 > brightness; echo 4 > brightness with intel_backlight I can set the maximum brightness. So when I set it to 150 instead of 312 I can use the hardware keys to change the brightness between 5% and 50% X==0 -> black screen X==1,3,5,7,9,11,13,15,17,19 -> maximum brightness X==2,4,6,8,10,12,14,16,18 -> brightness increases from about 0% to 10% constantly X==20 -> brightness about 10% X==312 -> maximum brightness between X==20 and X==312 the brightness increases constantly I hope this helps. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.