Bug 90999

Summary: xset dpms force off does not turn off LCD backlight
Product: xorg Reporter: freedesktop
Component: Driver/nouveauAssignee: Nouveau Project <nouveau>
Status: RESOLVED MOVED QA Contact: Xorg Project Team <xorg-team>
Severity: normal    
Priority: medium    
Version: unspecified   
Hardware: x86-64 (AMD64)   
OS: Linux (All)   
Whiteboard:
i915 platform: i915 features:
Attachments:
Description Flags
Output of dmesg (see detail in description)
none
/sys/kernel/debug/dri/0/vbios.rom none

Description freedesktop 2015-06-16 20:24:41 UTC 
Created attachment 116540 [details]
Output of dmesg (see detail in description)

'xset dpms force off' turns the screen blank but the LCD backlight remains on.

Linux kernel 4.0.5 running on a MacbookPro 11,3.

dmesg.txt attached from running kernel with 'nouveau.debug=VBIOS=trace,I2C=debug,DISP=debug,DRM=debug drm.debug=0xe' and should contain output generated from running xset dpms force off at the end of file.
Comment 1 freedesktop 2015-06-16 20:29:23 UTC 
Created attachment 116541 [details]
/sys/kernel/debug/dri/0/vbios.rom
Comment 2 freedesktop 2015-06-16 20:43:37 UTC 
Workaround: using the nv driver
Comment 3 Martin Peres 2019-12-04 09:00:50 UTC 
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