[OpenIndiana-discuss] ACPI issues on HP xw8200

[Bryan N Iotti]

Hi all,

as I posted some time ago, I got a new machine, this HP xw8200.

It was running ok, would sometimes hang for no apparent reason. I 
updated the BIOS and that got rid of the /dev/random missing providers 
at boot, but it would still hang.

So I started to read /var/adm/messages and with each reboot I'd find 
this part:
/
Jan 27 21:12:37 Wraith acpica: [ID 283710 kern.notice] ACPI Error: Could 
not map memory at        0CFFF9513, size 0 (20091112/exregion-267)
Jan 27 21:12:37 Wraith acpica: [ID 389759 kern.notice] ACPI Exception: 
AE_NO_MEMORY, Returned by Handler for [SystemMemory] (20091112/evregion-587)
Jan 27 21:12:38 Wraith acpica: [ID 100000 kern.notice]
Jan 27 21:12:38 Wraith acpica: [ID 520444 kern.notice] **** Exception 
AE_NO_MEMORY during execution of method [\_PR_.CPU0._PDC] (Node 
ffffff01ccf63890)
Jan 27 21:12:38 Wraith acpica: [ID 100000 kern.notice]
Jan 27 21:12:38 Wraith acpica: [ID 652514 kern.notice] Method Execution 
Stack:
Jan 27 21:12:38 Wraith acpica: [ID 490074 kern.notice]     Method [_PDC] 
executing: Load (IST0, HI0)
Jan 27 21:12:38 Wraith acpica: [ID 100000 kern.notice]
Jan 27 21:12:38 Wraith last message repeated 1 time
Jan 27 21:12:38 Wraith acpica: [ID 243090 kern.notice] Local Variables 
for method [_PDC]:
Jan 27 21:12:38 Wraith acpica: [ID 168412 kern.notice]     Local0: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 170460 kern.notice]     Local1: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 172508 kern.notice]     Local2: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 174556 kern.notice]     Local3: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 176604 kern.notice]     Local4: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 178652 kern.notice]     Local5: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 180700 kern.notice]     Local6: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 182748 kern.notice]     Local7: 0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 100000 kern.notice]
Jan 27 21:12:38 Wraith acpica: [ID 827466 kern.notice] Arguments for 
Method [_PDC]:  (1 arguments defined, max concurrency = 0)
Jan 27 21:12:38 Wraith acpica: [ID 848648 kern.notice]     Arg0:   
ffffff01ccf56748 <Obj>             Buffer(12)  1  0  0  0  1  0  0  0
Jan 27 21:12:38 Wraith acpica: [ID 975561 kern.notice]     Arg1:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 975563 kern.notice]     Arg2:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 975565 kern.notice]     Arg3:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 975567 kern.notice]     Arg4:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 975569 kern.notice]     Arg5:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 975571 kern.notice]     Arg6:   0 
<Null Object>
Jan 27 21:12:38 Wraith acpica: [ID 100000 kern.notice]
Jan 27 21:12:38 Wraith acpica: [ID 521932 kern.notice] ACPI Error 
(psparse-0633): Method parse/execution failed [\_PR_.CPU0._PDC] (Node 
ffffff01ccf63890), AE_NO_MEMORY
Jan 27 21:12:38 Wraith unix: [ID 209072 kern.info] NOTICE: cpu_acpi: 
error 4 evaluating _PDC package for CPU 0.
Jan 27 21:12:38 Wraith rootnex: [ID 349649 kern.info] acpinex0 at root
Jan 27 21:12:38 Wraith genunix: [ID 936769 kern.info] acpinex0 is /fw
Jan 27 21:12:38 Wraith acpinex: [ID 328922 kern.info] acpinex: cpu at 1, 
cpudrv0
Jan 27 21:12:38 Wraith genunix: [ID 408114 kern.info] /fw/cpu at 1 
(cpudrv0) online/

Now, I read about disabling ACPI in OI/OSOL using the 
user-acpi-options=0x8 or 0x4 or 0x2, but in the end just disabled ACPI 
from BIOS and it hasn't frozen since.

What are the possible problems I could run into?

Thank you,

    Bryan