Bug 16689 - radeon driver: conflict between manual backlight switch off and auto
Summary: radeon driver: conflict between manual backlight switch off and auto
Status: RESOLVED NOTOURBUG
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/Radeon (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: high major
Assignee: xf86-video-ati maintainers
QA Contact: Xorg Project Team
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2008-07-12 14:47 UTC by heavytull
Modified: 2010-10-19 16:35 UTC (History)
1 user (show)

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Description heavytull 2008-07-12 14:47:44 UTC 
when i intend to leave my laptop for a while I manually switch OFF the backlight of the screen by pressing Fn+F4 keys, otherwise i just leave it ON and after 10min (ACPI settings) it gets OFF automatically. It appears that if I manually switch OFF the backlight and leave it OFF for the time of ACPI auto OFF, then I can switch back ON the backlight by just moving the mouse or pressing any key on the keyboard once. But if I press a second time any key, then i get a blank screen (backlight ON) and the computer is in a "hung" mode, then I have to switch manually OFF the backlight again and switch it ON again by pressing any key on the keyboard.

I say it is in a "hung" mode because If all happens while the computer plays music, then the music stops when the screen is blank.

I'm using the default slackware 12.1 with its generic kernel (2.6.24.5-smp)
Comment 1 Alex Deucher 2010-10-19 16:35:39 UTC 
sounds like an acpi issue.

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