Hi all,
Nicolas Boichat wrote:
> Sven Anders wrote:
>> Till Straumann schrieb:
>>> I'm very annoyed by the loud 'bong' my macbook pro utters
>>> every time I forget to mute the volume before shutting down OSX.
>>>
>>> I just found a simple way to silence it. The good news
>>> are that OSX seems to remember my volume settings
>>> from some file so silencing the system audio volume
>>> in NVRAM really only affects the 'bong' (YMMV):
>>>
>>> Simply create (as root, on OSX) /etc/rc.shutdown.local
>>> and add one line:
>>>
>>> /usr/sbin/nvram SystemAudioVolume=%80
>> To be back on-topic, is there an equivalent Linux tool of "nvram" to
>> do this under Linux?
>
> I investigated the subject, and nvram accesses EFI (through
> AppleEFINVRAM plugin in AppleEFIRuntime.kext). So from what I
> understand, these values will only be available if you boot in EFI mode.
In any case, my experience (MBP C2D) is that ACPI will freak after a
couple of suspends (both to disk and ram) unless you reset the NVRAM (at
least) now and then. Typically the first sign is that the battery meter
reads all zeros. Alas, when you reset the NVRAM, the chime comes back,
so you need to go into MacOSX to turn it down again... Basically, with
suspend-to-ram, it is pointless because it only happens at the very
first boot, and with suspend2disk it is pointless because in order to
have (semi-) reliable resume, you must reset NVRAM every time.
Anyone else experinceing this? I'm on 2.6.22-rc5-mactel, but it's been
like this on every kernel I've tried and the same effect on both MBP C2D
I've had. (Only tried a C1D for a short time, but it seemed ok then).
BTW: My fans just about always start of at ~2000 at boot or resume, but
quickly climb to 4500-4900 even when just browsing/mailing with both
CPUs at OnDemand, as in mostly at 42% (1GHz). Typical battery life is
1-1.5 hour at best. I usually work plugged in so I can live with the
battery life, but the fans sure are annoying.
/ Jonas
--
Jonas Petersson | XMS Penvision | mailto:[EMAIL PROTECTED]
Box 3294, Västgötegatan 13, S-600 03 Norrköping | www.penvision.se
Tel: +46 11 400 13 00 | Dir: +46 11 400 13 05 | Fax: +46 11 10 30 50
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