[Bug 566193] [NEW] luminosity screen on a laptop cannot be set

Mon May 17 16:43:16 UTC 2010

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After upgrade from karmic to lucid, luminosity cannot be set on a laptop
(Asus Pro 5JI).

When pressing the luminosity keys, dmesg send the following output :

8<-----------------------------------
[  209.309032] ACPI Exception: AE_AML_BUFFER_LIMIT, Index (00000005D) is beyond end of object (20090903/exoparg2-445)
[  209.309047] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.STBR] (Node f701bb28), AE_AML_BUFFER_LIMIT
[  209.309115] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.VGA_.LCDD._BCM] (Node f7016cd8), AE_AML_BUFFER_LIMIT
[  209.309186] ACPI Error: Evaluating _BCM failed (20090903/video-528)
[  209.309192] ACPI: Failed to switch the brightness
[  209.314634] ACPI Exception: AE_AML_BUFFER_LIMIT, Index (000000064) is beyond end of object (20090903/exoparg2-445)
[  209.314643] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.STBR] (Node f701bb28), AE_AML_BUFFER_LIMIT
[  209.314683] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.VGA_.LCDD._BCM] (Node f7016cd8), AE_AML_BUFFER_LIMIT
[  209.314723] ACPI Error: Evaluating _BCM failed (20090903/video-528)
[  209.315943] ACPI Exception: AE_AML_BUFFER_LIMIT, Index (00000005D) is beyond end of object (20090903/exoparg2-445)
[  209.315952] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.STBR] (Node f701bb28), AE_AML_BUFFER_LIMIT
[  209.315992] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.VGA_.LCDD._BCM] (Node f7016cd8), AE_AML_BUFFER_LIMIT
[  209.316489] ACPI Error: Evaluating _BCM failed (20090903/video-528)
[  209.325119] ACPI Exception: AE_AML_BUFFER_LIMIT, Index (000000064) is beyond end of object (20090903/exoparg2-445)
[  209.325128] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.SBRG.EC0_.STBR] (Node f701bb28), AE_AML_BUFFER_LIMIT
[  209.325167] ACPI Error (psparse-0537): Method parse/execution failed [\_SB_.PCI0.VGA_.LCDD._BCM] (Node f7016cd8), AE_AML_BUFFER_LIMIT
[  209.325207] ACPI Error: Evaluating _BCM failed (20090903/video-528)
8<-----------------------------------

Error persists even after a reboot.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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luminosity screen on a laptop cannot be set
https://bugs.edge.launchpad.net/bugs/566193
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