Messages in this thread | | | From | Jörg-Volker Peetz <> | Subject | HP WMI driver | Date | Mon, 14 Mar 2011 16:23:50 +0100 |
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Hi Matthew,
concering the hp-wmi driver I would like to answer a few questions.
My GNU/Linux Debian system with a self compiled custom kernel 2.6.37.3 is running on a HP Pavilion DV7-4151sg notebook (dmidecode output, DSDT, and kernel config attached). I activated the driver on my HP notebook in order to achieve several goals: (1) make the rfkill hardware button work (seems to work according to the output of rfkill list and acpi_listen) (2) make the buttons for lowering and increasing display brightness work (do not work, no output with acpi_listen) (3) the display back side has an illuminated "hp" logo which I would like to be able to switch off (alone or together with the display) to save a little energy How can I found out if these functionality is achievable via ACPI WMI functions or somehow else? What would I have to change in hp-wmi.c?
By the way, I see the following messages in dmesg concerning WMI (these messages did not appear before 2.6.37.4):
ACPI Error: Field [D128] at 1040 exceeds Buffer [NULL] size 160 (bits) (20101013/dsopcode-597) ACPI Error: Method parse/execution failed [\_SB_.WMID.HWMC] (Node ffff88011be42320), AE_AML_BUFFER_LIMIT (20101013/psparse-537) ACPI Error: Method parse/execution failed [\_SB_.WMID.WMAD] (Node ffff88011be42500), AE_AML_BUFFER_LIMIT (20101013/psparse-537) ACPI Error: Field [D128] at 1040 exceeds Buffer [NULL] size 160 (bits) (20101013/dsopcode-597) ACPI Error: Method parse/execution failed [\_SB_.WMID.HWMC] (Node ffff88011be42320), AE_AML_BUFFER_LIMIT (20101013/psparse-537) ACPI Error: Method parse/execution failed [\_SB_.WMID.WMAD] (Node ffff88011be42500), AE_AML_BUFFER_LIMIT (20101013/psparse-537) ACPI Error: Field [D128] at 1040 exceeds Buffer [NULL] size 160 (bits) (20101013/dsopcode-597) ACPI Error: Method parse/execution failed [\_SB_.WMID.HWMC] (Node ffff88011be42320), AE_AML_BUFFER_LIMIT (20101013/psparse-537) ACPI Error: Method parse/execution failed [\_SB_.WMID.WMAD] (Node ffff88011be42500), AE_AML_BUFFER_LIMIT (20101013/psparse-537) hp-wmi: probe of hp-wmi failed with error -22
Any help is appreciated. Best regards, Jörg-Volker.
P.S.: Please excuse the previous unready e-mail with the wrong subject.
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