sony-vaio-z-series team mailing list archive

[Thomas Jensen <vaio@xxxxxxxxxxxxxxxxx>]

Hi,
what exactly is the acpi_oci trick?

/Thomas

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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