kern/145306: [acpi]: Can't change brightness on HP ProBook 4510s

[David DEMELIER]

2010/4/5 Dan Lukes <dan at obluda.cz>:
> Short summary for PR/145306:
>
> I asked the David to turn on ACPI debugging. There are some notification
> (so we know we got debugging output properly) but none of them are
> related to brightness keys.
>
> David DEMELIER wrote:
>>>> I added them and I got a big output in dmesg but still no message when pressing fn-keys.
>> No message at all, like I didn't do anything
>
> Then no good news. I can't help you. Your BIOS doesn't create the
> notification required by ACPI specification section B.7
>
> Your's acpidump show that the notification may be sent, but we know the
> prerequisites that's need to be fulfilled. It may be a initialisation of
> something or so.
>
> If you have older than lates version of system BIOS (e.g. F.12 revision)
> the upgrade may help:
> http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3934829&prodTypeId=321957&prodSeriesId=3934828&swLang=13&taskId=135&swEnvOID=4056#120
>
> May be someone smarter may help better to you. You should save output of:
> 1. acpidump -dt
> 2. devinfo -vr
> 3. dmesg after boot with ACPI debugging turned on
>
> somewhere then send URL to the PR so anyone can read it.
>
> I'm sorry I have no better response to you ...
>
>                                        Dan
>

Hi,

Just one information I noticed today : when booting without ACPI
enabled (it does not boot it stops at a certain point (can't
remember)) I can change the brightness so maybe there is a problem
between freebsd ACPI <-> the laptop screen ?

Cheers

-- 
Demelier David