Bug 12835

Summary:	Regression in backlight detection
Product:	ACPI	Reporter:	Rafael J. Wysocki (rjw)
Component:	Power-Video	Assignee:	acpi_power-video
Status:	CLOSED PATCH_ALREADY_AVAILABLE
Severity:	normal	CC:	acpi-bugzilla
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.28	Subsystem:
Regression:	Yes	Bisected commit-id:
Bug Depends on:
Bug Blocks:	11808

Description Rafael J. Wysocki 2009-03-07 12:58:18 UTC

Subject    : acer-wmi: fix regression in backlight detection
Submitter  : Michael Spang <mspang@csclub.uwaterloo.ca>
Date       : 2009-02-24 5:41
References : http://marc.info/?l=linux-kernel&m=123545411502396&w=4
Handled-By : Michael Spang <mspang@csclub.uwaterloo.ca>
Patch      : http://marc.info/?l=linux-kernel&m=123545411502396&w=4

This entry is being used for tracking a regression from 2.6.28.  Please don't
close it until the problem is fixed in the mainline.

Caused by:

commit febf2d95a71cd594182e4b3defb0e0ffdfe61482
Author: Thomas Renninger <trenn@suse.de>
Date:   Fri Aug 1 17:37:56 2008 +0200

    Acer-WMI: fingers off backlight if video.ko is serving this functionality

    Signed-off-by: Thomas Renninger <trenn@suse.de>
    Acked-by: Zhang Rui <rui.zhang@intel.com>
    Signed-off-by: Andi Kleen <ak@linux.intel.com>
    Acked-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
    Signed-off-by: Len Brown <len.brown@intel.com>

Comment 1 Rafael J. Wysocki 2009-03-07 12:58:55 UTC

This is a regression from 2.6.28, sorry.

Comment 2 Rafael J. Wysocki 2009-03-07 12:59:22 UTC

This is a regression from 2.6.27, sorry again.

Comment 3 Zhang Rui 2009-03-08 19:56:01 UTC

Patch already available.

Comment 4 Len Brown 2009-03-17 10:06:38 UTC

1ba869ec581fd9078b684c56c399ffe3d2345e27
acer-wmi: fix regression in backlight detection

shipped upstream in 2.6.29-rc

closed