https://bugzilla.kernel.org/show_bug.cgi?id=153401
--- Comment #28 from Luca Viggiani <[email protected]> --- > please attach the output of "grep . /sys/class/backlight/*/*" in both 4.6 > and 4.7 kernel, with both BIOS option enabled $ disabled. Kernel 4.7.2, BIOS Option OFF: Brightness changes but not in smooth way /sys/class/backlight/intel_backlight/actual_brightness:1952 /sys/class/backlight/intel_backlight/bl_power:0 /sys/class/backlight/intel_backlight/brightness:1952 /sys/class/backlight/intel_backlight/max_brightness:4882 /sys/class/backlight/intel_backlight/type:raw Kernel 4.7.2, BIOS option ON: (NEW) Brightness now does not change anymore (before I had the flash/bounce effect; not sure if depends on the fact I have updated from 4.7.1 or after enabligne and disabling the BIOS option). It means that the OSD slider and also value of /sys/class/backlight/intel_backlight/brightness changes but the display stays at 100% /sys/class/backlight/intel_backlight/actual_brightness:1710 /sys/class/backlight/intel_backlight/bl_power:0 /sys/class/backlight/intel_backlight/brightness:1710 /sys/class/backlight/intel_backlight/max_brightness:4882 /sys/class/backlight/intel_backlight/type:raw Kernel 4.6.5, BIOS option OFF: Now it behaves like Kernel 4.7.2, BIOS Option OFF: /sys/class/backlight/intel_backlight/actual_brightness:2686 /sys/class/backlight/intel_backlight/bl_power:0 /sys/class/backlight/intel_backlight/brightness:2686 /sys/class/backlight/intel_backlight/max_brightness:4882 /sys/class/backlight/intel_backlight/type:raw Kernel 4.6.5, BIOS option ON: Smooth transitions /sys/class/backlight/acpi_video0/actual_brightness:60 /sys/class/backlight/acpi_video0/bl_power:0 /sys/class/backlight/acpi_video0/brightness:60 /sys/class/backlight/acpi_video0/max_brightness:100 /sys/class/backlight/acpi_video0/type:firmware -- You are receiving this mail because: You are watching the assignee of the bug. ------------------------------------------------------------------------------ _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
