http://bugzilla.kernel.org/show_bug.cgi?id=12302
Summary: Backward brigthess level
Product: ACPI
Version: 2.5
KernelVersion: 2.6.28
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Video
AssignedTo: [email protected]
ReportedBy: [email protected]
Latest working kernel version: 2.6.27.10
Earliest failing kernel version: 2.6.28
Distribution: all
Hardware Environment: Notebook asus X51L
Software Environment: all
Problem Description:backward brigthess level
Steps to reproduce: start Kpowersave and select brigthess level
Asus X51L backward brigthess trouble.
/proc/acpi/video/VGA/LCDD/brightness - work fine 0-min 15-max
/sys/class/backlight/acpi_video0/brightness - trouble 0-max 15-min
Kpowersave work bad - 100%-min 1%-max
In dmesg:
Dec 25 23:47:08 sfstudio kernel:
ACPI: Please implement acpi_video_bus_ROM_seq_show
Dec 26 01:34:14 sfstudio kernel: asus-laptop: Asus Laptop Support version 0.42
Dec 26 01:34:14 sfstudio kernel: asus-laptop: X51L model detected
Dec 26 01:34:14 sfstudio kernel: asus-laptop: Brightness ignored, must be
controlled by ACPI video driver
Dec 26 01:34:14 sfstudio kernel: Registered led device: asus::mail
Dec 26 01:37:29 sfstudio kernel: asus-laptop: Asus Laptop Support version 0.42
Dec 26 01:37:29 sfstudio kernel: asus-laptop: X51L model detected
Dec 26 01:37:29 sfstudio kernel: asus-laptop: Brightness ignored, must be
controlled by ACPI video driver
Dec 26 01:37:29 sfstudio kernel: Registered led device: asus::mail
Dec 26 01:39:20 sfstudio kernel: asus-laptop: Asus Laptop Support version 0.42
Dec 26 01:39:20 sfstudio kernel: asus-laptop: X51L model detected
Dec 26 01:39:20 sfstudio kernel: asus-laptop: Brightness ignored, must be
controlled by ACPI video driver
Dec 26 01:39:20 sfstudio kernel: Registered led device: asus::mail
Dec 26 01:40:31 sfstudio kernel: asus-laptop: Asus Laptop Support version 0.42
Dec 26 01:40:31 sfstudio kernel: asus-laptop: X51L model detected
Dec 26 01:40:31 sfstudio kernel: asus-laptop: Brightness ignored, must be
controlled by ACPI video driver
Dec 26 01:40:31 sfstudio kernel: Registered led device: asus::mail
Kernel:
[r...@sfstudio kernel]# uname -a
Linux sfstudio.sadnet.lo 2.6.28 #2 SMP PREEMPT Thu Dec 25 17:14:54 OMST 2008
i686 Intel(R) Celeron(R) CPU 540 @ 1.86GHz GNU/Linux
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