Hello, I got a new Thinkpad Yoga 460 here.
I tried numerous standard solutions that used to make brightness work, none
of them works here
acpi_backlight=vendor the thinkpad_acpi driver loads
======
[ 1.781299] thinkpad_acpi: ThinkPad ACPI Extras v0.25
[ 1.781301] thinkpad_acpi: http://ibm-acpi.sf.net/
[ 1.781303] thinkpad_acpi: ThinkPad BIOS R05ET56W (1.34), EC unknown
[ 1.781304] thinkpad_acpi: Lenovo ThinkPad Yoga 460, model 20EM000VGE
[ 1.782643] thinkpad_acpi: detected a 8-level brightness capable ThinkPad
[ 1.783774] thinkpad_acpi: radio switch found; radios are enabled
[ 1.823999] thinkpad_acpi: rfkill switch tpacpi_bluetooth_sw: radio is
unblocked
[ 1.826249] thinkpad_acpi: Console audio control enabled, mode: monitor
(read only)
[ 1.834253] input: ThinkPad Extra Buttons as
/devices/platform/thinkpad_acpi/input/input5
================
And I get an interface:
===
$ ls /sys/class/backlight/thinkpad_screen/
actual_brightness bl_power brightness max_brightness power subsystem
type uevent
===
but nothing I echo into brightness (0-7) changes the screen
and
$ echo 7 > /sys/class/backlight/thinkpad_screen/brightness
$ cat /sys/class/backlight/thinkpad_screen/actual_brightness
0
"actual brightness" is always almost correctly 0. The screen is as dark as
possible, but not turned off yet.
The module refuses the option brightness_mode=1 (EC) whatever that means.
Any idea how to make this work?
Kind regardds,
------------------------------------------------------------------------------
Transform Data into Opportunity.
Accelerate data analysis in your applications with
Intel Data Analytics Acceleration Library.
Click to learn more.
http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140
_______________________________________________
ibm-acpi-devel mailing list
ibm-acpi-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
