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[Guide] Backlight + Brightness for Intel 8086:0046 (1st gen HD) (GMA 5700MHD)

first generation HD backlight brightness ACPI DSDT 8086:0046 GMA 5700MHD Ironlake Arrandale

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    InsanelyMac Protégé

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Is this fine ??? :cry: , My BAR1 is starting with 0x9


Device/Vendor ID    0x00468086
Revision ID    0x18
Class Code    0x030000
Cacheline Size    0x00
Latency Timer    0x00
Interrupt Pin    INTA
Interrupt Line    None
BAR1        0x90000004
BAR2        0x00000000
BAR3        0x8000000C
BAR4        0x00000000
BAR5        0x00003051
BAR6        0x00000000
Expansion ROM    0x00000000
Subsystem ID    0x06031025






EDIT : Yay :D , its working now, thanks mnorthern, yayayay, happy to not using shades again :thumbsup_anim: ,thanks a ton mnorthern

Edited by RiskyRis, 14 June 2014 - 01:57 AM.



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(acer travelmate 5742z laptop)


thanks to ghost raider and mnothern, I was able to solve the problem  :) (all dsdt errors must be fixed and _SB part in the guide is important to notice.)



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Brightness is working on my Acer Aspire 4740 (Intel Core i5 430M) but I have two little problems :


1st. When I use the Functions Keys (Fn + Left Arrow and Fn + Right Arrow) to change to Brightness intensity, is only working the Fn + Right Arrow to increase brightness but I can't decrease the brightness, I need to go to System Preferences to decrease brightness with the bar.
2nd. When I reboot/shutdown the laptop, the brightness values are reseted to the maximum value so I must adjust the brightness values again.
Please, is there a solution for this ? 

Also tagged with one or more of these keywords: first generation HD, backlight, brightness, ACPI, DSDT, 8086:0046, GMA, 5700MHD, Ironlake, Arrandale

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