[Bugme-new] [Bug 4393] New: hangs on calling \_SB_.BAT0._STA on MaxSelect A7wide

bugme-daemon at osdl.org bugme-daemon at osdl.org
Wed Mar 23 10:47:43 PST 2005


http://bugme.osdl.org/show_bug.cgi?id=4393

           Summary: hangs on calling \_SB_.BAT0._STA on MaxSelect A7wide
    Kernel Version: 2.6.11
            Status: NEW
          Severity: high
             Owner: acpi_aml-interpreter at kernel-bugs.osdl.org
         Submitter: vsu at altlinux.org


Distribution: ALT Linux
Hardware Environment: MaxSelect A7wide notebook (AMD Mobile AMD Athlon(tm) XP
2500+, SiS 746 chipset)

Kernel 2.6.11 with ACPI enabled does not boot on this machine - it hangs after
printing "Executing all Device _STA and_INI methods:...".  Booting with
acpi_dbg_level=0x2f shows that it hangs on calling the \_SB_.BAT0._STA method.

Kernel 2.6.10 booted on this machine without problems. 2.6.11 with ACPI parts
(drivers/acpi/*, *include/*acpi*, drivers/pnp/pnpbios/core.c) reverted to 2.6.10
versions boots without hang.

2.6.11 with
http://www.kernel.org/pub/linux/kernel/people/lenb/acpi/patches/release/2.6.11/acpi-20050309-2.6.11.diff.bz2
was tried - it hangs the same way.

Booting 2.6.11 with acpi_dbg_level=0x3f shows an endless stream of these messages:

exregion-0294 [30] ex_system_io_space_han: system_io 0 (8 width)
adress=000000000000006c
exregion-0294 [31] ex_system_io_space_han: system_io 1 (8 width)
adress=000000000000006c

The hang seems to happen in this loop inside \_SB.PCI0.LPC0.PMRD:

                        While (RCMD (0x80, Local0))
                        {
                            Noop
                            Noop
                            Store (PMUC, Local5)
                            If (And (Local5, 0x01, Local2))
                            {
                                Store (PMUD, Local5)
                            }
                        }

(other loops seem to have timeouts, but this does not)

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