So the backlight is set to 255 most of the time (because with that value it is stable)... I have pressed the decrease and increase backlight buttons some times:
arg4 is different... arg5 is 0x0 here too... Aspire-A315-41:~$ sudo kprobe-perf 'p:dce_abm_set_backlight_level_pwm $arg1 $arg2 $arg3 $arg4 $arg5 ' Tracing kprobe dce_abm_set_backlight_level_pwm. Ctrl-C to end. mate-power-back-7094 [002] .... 4130.246969: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7100 [002] .... 4140.650308: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xe9fb arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7106 [004] .... 4148.360022: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7112 [006] .... 4150.064228: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xffff arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7117 [000] .... 4154.430645: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7123 [000] .... 4156.020204: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xe9fb arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7129 [000] .... 4169.318284: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7135 [003] .... 4171.173554: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xffff arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7141 [006] .... 4177.134779: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7147 [000] .... 4178.988650: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xe9fb arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7152 [005] .... 4179.822378: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xdef9 arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7157 [003] .... 4180.801012: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xd3f7 arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7162 [003] .... 4181.676478: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xc8f5 arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7173 [004] .... 4186.458165: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xd3f7 arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7179 [000] .... 4186.989282: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xdef9 arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7184 [000] .... 4187.362960: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xe9fb arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7189 [002] .... 4187.737620: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xf4fd arg3=0x0 arg4=0x1 arg5=0x0 mate-power-back-7194 [007] .... 4188.118618: dce_abm_set_backlight_level_pwm: (dce_abm_set_backlight_level_pwm+0x0/0x410 [amdgpu]) arg1=0xffff9cabd4c87800 arg2=0xffff arg3=0x0 arg4=0x1 arg5=0x0 ^C Ending tracing... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1861925 Title: BrightnessOutofRange: Actual brightness for amdgpu_bl0 not in range 0..255 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861925/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
