ACPI Attach (acpi_ibm) stops mouse from working

[Sam Leffler]

Tom Judge wrote:
> John Baldwin wrote:
>> On Monday 22 October 2007 12:04:52 pm Tom Judge wrote:
>>> Hi,
>>>
>>>
>>> I have recently setup an IBM/Lenovo T43 with RELENG_7 as of mid last 
>>> week, however I have a problem with the acpi_ibm module.
>>>
>>> If I add acpi_ibm_load="YES" to loader.conf I get the following 
>>> message during boot:
>>>
>>> psm0: unable to allocate IRQ
>>>
>>> This is followed by a message stating that the acpi_ibm module has 
>>> attached to IRQ 12.
>>>
>>> If I remove this module from loader.conf and boot the system the 
>>> mouse attaches and works as expected.  If I then kldload acpi_ibm 
>>> the module attaches to acpi0.
>>>
>>>
>>> Is there any way to make this work without loading the acpi module 
>>> after boot?
>>
>> Can you provide your acpidump as well as devinfo -rv output from both 
>> cases?  (i.e. when it is loaded at boot and when it is kldloaded 
>> after boot)
>>
> Hi,
>
> After spending many hours trying to reproduce this I have narrowed it 
> down to the order in which the modules are loaded (and by nature 
> listed in /boot/loader.conf).  It seems that the psm will only attach 
> when acpi_ibm is listed at the end of loader.conf.
>
> I have run a sequence of tests and gathered the following data
>
> acpidump -dt
> devinfo -rv
> /var/run/dmesg.boot
> Kernel config (T43)
>
> The file names are in the format {data}-{acpi_ibm_load line number in 
> loader.conf}-{good=psm attached/bad=psm failed to attach}
>
> The files are avaliable here: http://www.tomjudge.com/tmp/debug.tgz
>
> If you want any more information please let me know.

FWIW I hit this same problem on a freshly installed t42.  In my case 
acpi_ibm was not the last thing loaded but it was loaded by the loader.

    Sam