sony-vaio-z-series team mailing list archive

[Heikki Wilenius <heikki.wilenius@xxxxxx>]

On Tue, May 24, 2011 at 8:33 PM, Thomas Jensen <vaio@xxxxxxxxxxxxxxxxx> wrote:
> Hi,
> what exactly is the acpi_oci trick?

I take it you are asking how to do it?

Edit /etc/default/grub, and change the line beginning
"GRUB_CMDLINE_LINUX_DEFAULT" to

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_osi="

Then update grub by typing

update-grub

This makes the speed/stamina hardware switch work, but only after you
have booted into a kernel with the acpi_osi boot parameter enabled,
and rebooted, and changed the switch before the reboot. So it comes
into effect during reboot. Somebody please correct me if this is not
right. This should be in the wiki as well I think.

* * *

Also, I've just written about my experiences in installing 11.04 in my
blog. Stamina works easily, but I had problems with Nvidia like many
people here. I'm now trying a reinstall without installing the ubuntu
nvidia packages, I think they messed up the installation.

The great thing is that suspend finally works for me (VPC-Z13) out of
the box in stamina. I never got it to work in 10.10 despite a lot of
tries.

http://www.adhocism.net/2011/05/installing-ubuntu-11-04-on-sony-vaio-vpc-z13m9eb/

I also updated the wiki.

BTW, it might be a good idea to feature the wiki a bit more prominenty
on the Z-series Launchpad front page so that people would find it
easier.

Cheers,
Heikki

> lør, 30 04 2011 kl. 23:27 -0700, skrev Justin Karneges:
>> Hi guys,
>>
>> I just wanted report my experience with the latest stable on Z12.  Basically,
>> everything more or less seems to work provided you use static switching.  On
>> my system, it is enough to use the acpi_osi="" kernel param trick.  But as is
>> often mentioned, this may not work for later models and you may need to hack
>> your BIOS in that case.
>>
>> If you don't use static switching then both cards remain powered on and intel
>> is the one that gets used (afaict).  You'll also get a black screen during
>> boot, which is a little bit scary, and also might be problematic if you use
>> LUKS.  But X loads fine eventually.  So it may not be wrong to say that Natty
>> works out of the box without any special tricks, but I really do think you
>> need to use static switching to feel confident about the system.
>>
>> Both nvidia and intel cards work.  With nvidia, I seem to need to alt-f7 to
>> see boot messages (which is needed for me since I have to enter my LUKS
>> passphrase).  Also, brightness controls do not work with nvidia.  Suspend
>> works with either card.
>>
>> Hibernate appears to be a little quirky.  It hung during the hibernate
>> process, but restore after reboot "seemed" to work.  I'd stick with suspend
>> until the bugs are worked out.
>>
>> In all, I'm pleased that things are finally working nicely, 9 months after
>> buying this computer. :P
>>
>> Some stats:
>>   ~13W on stamina during light usage (e.g. this email composition)
>>   ~30 second boot time:
>>     15 seconds from pushing the power button to LUKS prompt
>>     15 seconds from entering passphrase to fully loaded gnome (I have auto-
>> login set)
>>
>> Wishlist:
>>   - brightness control with nvidia
>>   - hibernate
>>   - static switching support in the kernel at boot time, to obviate the bios
>> tricks
>>
>> Justin
>>
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