ACPI error on Compaq nc6220, FreeBSD 7.0

[Nate Lawson]

Denis wrote:
> On 9/25/07, Nate Lawson <nate at root.org> wrote:
>> Denis wrote:
>>> On 9/24/07, Nate Lawson <nate at root.org> wrote:
>>>> Roman Pavlik wrote:
>>>>> On Sun, Sep 23, 2007 at 10:57:20AM +0400, Denis wrote:
>>>>> I've seen similar issue with ACPI on my HP 6710b. Escape to debug and
>>>>> return doesn't help. Sometimes helps disconecting AC line. The workaround
>>>>> is comment out the following line in GENERIC:
>>>>>  #options     PREEMPTION              # Enable kernel thread preemption
>>>>>  #options     ADAPTIVE_GIANT          # Giant mutex is adaptive.
>>>>>
>>>>> Rebuild kernel, reinstall, reboot.
>>> Thank you, Roman. I rebuild kernel and it helps. And disconecting AC
>>> line seems to help too (but tried only once)
>>>
>>>> Jung-uk Kim's global lock patch may be the solution.  We're trying to
>>>> get this stuff committed but things are slow due to the freeze for 7.0.
>>>>  You can't have too many patches floating around.
>>> Nate, if you mean this patch -
>>> http://people.freebsd.org/~jkim/acpica/OsdSynch.diff - I tried it, but
>>> without luck.
>> Nope, I mean the one just committed to 7-current.  So just cvsup and try
>> again.
> 
> I cvsuped and tried (without any additional patches). Good news -
> there is no kernel panic. But unfortunately the same "hang" exist...

We've got a couple issues ahead of this but hopefully will look into it
before 7.0.  You're not the only one with this problem.

-- 
Nate