sony-vaio-z-series team mailing list archive

[Xavier Hallade <xh@xxxxxxxxxxx>]

I have quite the same power consumption using directly the nvidia.

I tried to boot EFI application in order to access bios too. I managed to
display the grub_rescue prompt one time, booting from an usb key after
having disconnected the hdd and optical drive, but I had an error about the
filesystem.

I've tried 2.6.34-rc3 and 2.6.34-rc3-git5 on debian but it doesn't work for
me. I have a kernel panic with i915.modeset=0 and a black screen + system
freeze otherwise. Did you made secial edits to the .config ? I have taken
mine from debian 2.6.33 and only activate vga_switcheroo.

Xavier.

2010/4/6 Chris Cannam <cannam@xxxxxxxxxxxxxxxxxxxxx>

> On Thu, Apr 1, 2010 at 5:30 PM, Chris Cannam
> <cannam@xxxxxxxxxxxxxxxxxxxxx> wrote:
> > So far I'm experiencing surprisingly abject failure in every
> > direction.
>
> So I actually switched from Ubuntu to Arch Linux, because although I
> appreciate the fact that on the whole Ubuntu is more likely to work on
> any given hardware, its relative sophistication makes it harder for
> the dimwitted to troubleshoot in situations where nothing appears to
> be working.
>
> But just to report back on a few things that may be of interest:
>
>  * Intel display: i915 kernel mode setting with the Arrandale chipset
> works reliably for me in the latest kernels (I ended up building a
> 2.6.34-rc3, plus latest np sony_laptop module)
>
> Note all of the following refers to "stamina" mode with Intel drivers,
> I haven't tried the nVidia again and don't immediately plan to.
>
>  * Brightness keys don't work by default, though I can change the
> brightness manually with e.g. echo 4 >
> /sys/class/backlight/acpi_video0/brightness and I can see the key
> events with acpi_listen so presumably they can be hooked up (just
> looking at Raphael's script for doing this with nVidia and thinking it
> looks mostly applicable)
>
>  * Display doesn't come back on after suspend/resume.  Disappointing,
> as a recent kernel patch looked as if it was intended to address this
>
>  * I would like to power off the nVidia, but don't know how: trying to
> do it with vga_switcheroo gives me the same oops as Peter reported
>
>  * Touchpad works with Stefan's suggested boot option.  It was
> initially unusably jittery and oversensitive, but that seems to have
> become fixed in the course of other changes (can't readily identify
> what fixed it -- possibly some HAL or evdev-related change -- but if
> this is bothering anyone else, I can try to find out)
>
>  * Wireless works (iwlagn driver) though it seems a wee bit temperamental
>
>  * BIOS doesn't seem to want to boot EFI applications under any
> circumstances, even with no other storage devices connected, so the
> static video card switch method described at
> feature-enable.blogspot.com doesn't seem to be possible
>
> Power consumption about 21W on middling brightness, which I hope means
> the nVidia is still powered on -- that would be pretty high otherwise.
>
>
> Chris
>
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