[Bug 311716] Re: The slider brightness Applet has value inverted after the last update (2.6.27-11)

[Peter Klotz]

Kernel 2.6.28-4.10 fixes this problem for me in Jaunty.

For the first time the brightness keys work correctly on my Asus B50A
laptop.

However in /var/log/messages these messages appear when pressing
brightness up/down keys:

Jan 13 22:13:54 asus kernel: [  181.876404] ACPI Error (dswstate-0097): Result stack is empty! State=ffff880128a22000 [20080926]
Jan 13 22:13:54 asus kernel: [  181.876417] ACPI Exception (dsutils-0645): AE_AML_NO_RETURN_VALUE, Missing or null operand [20080926]
Jan 13 22:13:54 asus kernel: [  181.876426] ACPI Exception (dsutils-0762): AE_AML_NO_RETURN_VALUE, While creating Arg 1 [20080926]
Jan 13 22:13:54 asus kernel: [  181.876437] ACPI Error (psparse-0524): Method parse/execution failed [\_SB_.PCI0.VGA_.UPBL] (Node ffff88013f81de60), AE_AML_NO_RETURN_VALUE
Jan 13 22:13:54 asus kernel: [  181.876588] ACPI Error (psparse-0524): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_._Q0F] (Node ffff88013f842440), AE_AML_NO_RETURN_VALUE

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The slider brightness Applet has value inverted after the last update (2.6.27-11)
https://bugs.launchpad.net/bugs/311716
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