[Bug 68631] Asus Taichi31 - No second backlight (dark)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=68631

--- Comment #7 from Axel <axel.huebl at web.de> ---
Created attachment 122141
  --> https://bugzilla.kernel.org/attachment.cgi?id=122141&action=edit
dmesg with drm.debug=0xe and acpi_backlight=vendor

Maybe that is useful, too.

$ cat /proc/cmdline

BOOT_IMAGE=/vmlinuz-3.13.0-031300rc7-generic
root=UUID=0e7230c6-d126-4b9e-adf3-2cd0add113cd ro drm.debug=0xe
acpi_backlight=vendor

$ ls /sys/class/backlight/
asus-nb-wmi  intel_backlight

$ ls /proc/acpi/
button/ wakeup

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