AC adaptor state change lockup on HP Pavilion zt1290

Hi All,

I have a terribly annoying problem that I have so far been unable to
fix. I'm running SuSE 9.2 Pro on a HP zt1290. The kernel is their most up-to-date (2.6.8-24.10-default). Whenever I need to connect/disconnect my AC adaptor the laptop locks-up hard. I have to cold boot to recover it. I thought this was related to a buggy DSDT and so I attempted to fix the DSDT according to the info at (http://www.cpqlinux.com/acpi-howto.html#fix_broken_dsdt). The DSDT now compiles without errors or warnings. It is found and loaded properly in the initrd as you can see here:

--clip--
ACPI: Looking for DSDT in initrd... found at offset 1195404
ACPI: Using customized DSDT
tbget-0291: *** Info: Table [DSDT] replaced by host OS
ACPI: IRQ9 SCI: Edge set to Level Trigger.
checking if image is initramfs...it isn't (no cpio magic); looks like an initrd Freeing initrd memory: 1186k freed
--clip--

Unfortunately the problem remains. I'm really desperate to fix this since I'm sure you can imagine what a pain it is to have to shutdown and reboot anytime I need to move the laptop. Does anyone have any suggestions how to proceed with debugging this problem?

Thanks,
Richard

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Hi All,

Sorry to reply to my own post but I thought I better give a few more
details to hopefully get the ball rolling and get a response. In my original DSDT the AC adapter is device ACAD. The relevent section of code is here:

                Device (ACAD)
                {
                    Name (_HID, "ACPI0003")
                    Name (_PCL, Package (0x01)
                    {
                        \_SB
                    })
                    Method (_PSR, 0, NotSerialized)
                    {
                        Return (\_SB.PCI0.LPCB.ACPW)
                    }
                }

Now, the ACPW member is in the GPIO Op region (under device LPCB) here:

                OperationRegion (GPIO, SystemIO, 0x1180, 0x3B)
                Field (GPIO, WordAcc, Lock, Preserve)
                {
                    AccessAs (DWordAcc, 0x00),
                    Offset (0x0F),
                        ,   4,
                    LV28,   1,
                    Offset (0x2D),
                        ,   5,
                    LPOL,   1,
                    Offset (0x38),
                        ,   1,
                    SRST,   1,
                    Offset (0x39),
                        ,   2,
                    ACPW,   1
                }

The compilation error from iasl that results from the above bits is:

DSDT.dsl.orig 1101: SRST, 1,
Error 1051 - ^ Access width of Field Unit
extends beyond region limit

DSDT.dsl.orig 1104: ACPW, 1
Error 1051 - ^ Access width of Field Unit
extends beyond region limit

and the change suggested by the webpage I mentioned in my first post is to increase the size of the Op region by 1 (0x3B -> 0x3C). Indeed after doing so the compilation error is gone but even after loading the fixed DSDT the problem remains, my laptop still locks-up whenever I try to plugin or remove the AC adapter.
I can post whatever files people would like to see. I don't find any
other place in the DSDT that should affect the AC power but if someone else can take a look or make a suggestion of what to try next I'd be really grateful. Hope to hear from someone.

Cheers,
Richard

"We build too many walls and not enough bridges."
-- Sir Isaac Newton

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            Richard Witt                 Phone (Yale): (203) 432-5834
LHEP, University of Bern, Switzerland    Email:  [email protected]
---***---***---***---***---***---***---***---***---***---***---***----




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