ACPI problems [was: Long boot delay "Mounting Root Filesystem"]

[David Abrahams]

David Abrahams <dave at boost-consulting.com> writes:

> David Abrahams <dave at boost-consulting.com> writes:
>> David Abrahams <dave at boost-consulting.com> writes:
>>> Paul Sladen <ubuntu at paul.sladen.org> writes:
>>>> On Wed, 2 Aug 2006, David Abrahams wrote:
>>>>
>>>>> > I have similar problems with my Fujitsu Siemens S7020D
>>>>> Here's where I see my delay:
>>>>>    [17179578.776000] ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 16 (level, low) -> IRQ 169
>>>>> ** long delay right here **
>>>>>    [17179687.396000] ahci 0000:00:1f.2: AHCI 0001.0100 32 slots 4 ports 1.5 Gbps 0x1 impl SATA mode
>>>>>    [17179687.396000] ahci 0000:00:1f.2: flags: 64bit ncq pm led clo pio slum part
>>>>>    [17179687.396000] ata1: SATA max UDMA/133 cmd 0xF884C500 ctl 0x0 bmdma 0x0 irq 66
>>>>
>>>> This looks exactly like:
>>>>
>>>>   https://launchpad.net/bugs/52689
>>>>
>>>> can you add your reports there.
>>>
>>> Sure; same machine even!  OK, will do.
>>
>> Done.  Is this going to get reported to the ACPI people automatically,
>> or should I do that?
>
> Wow.  I hope I'm not speaking too soon, but from what I can tell, my
> latest update (probably the kernel update) fixed the problem.  Either
> that, or the problem goes away when I boot on pure battery power.

Confirmed; the delay dropped to a couple of (easily ignored) seconds.
Go Ubuntu!!

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com