hybrid-graphics-linux team mailing list archive

[Albert Vilella <avilella@xxxxxxxxx>]

Hi octagonhead,

Can you repost the files somewhere?

If it helps, I have created a ppa here:
https://launchpad.net/~hybrid-graphics-linux/+archive/hybrid-graphics

On Fri, Jul 23, 2010 at 8:14 AM, octagonhead <octagonhead@xxxxxxxxx> wrote:
> Here is the result of my running this kernel with this patch applied
> Note that I used the ubuntu-provided linux-source package of 2.6.35-rc5
> rather than the vanilla kernel,
> So please let me know if this is expected to not work,
>
> the switcheroo interface is created:
>
> /sys/kernel/debug/vgaswitcheroo# cat switch
> 0:+:Pwr:0000:00:02.0
> 1: :Pwr:0000:01:00.0
>
> Here are the results of the switching commands I tried:
>
> /sys/kernel/debug/vgaswitcheroo# echo DIGD > switch
> vga_switcheroo: client 0 refused switch
> vga_switcheroo: setting delayed switch to client 0
>
> /sys/kernel/debug/vgaswitcheroo# echo DDIS > switch
> vga_switcheroo: client 0 refused switch
> vga_switcheroo: setting delayed switch to client 1
>
> /sys/kernel/debug/vgaswitcheroo# echo OFF > switch
>
> ^^^this seems to work, causing the nouveau driver to unload
> (but not removing the nvidia PCI device nor reducing power consumption
> according to powertop),
> but usually causes a kernel freeze after about a minute
>
> dmesg is attached, with kernel trace at the end
>
> ...
> Anyone wishing to make use of my kernel image may find an Ubuntu package at
> one of these urls:
> (sub-arch is Core-Duo/Xeon, all other config options are based of a stock
> Ubuntu kernel)
>
> http://rapidshare.com/files/408536337/linux-image-2.6.35-rc5_CustomDebugNV.01_amd64.deb
> or
> http://hotfile.com/dl/56924631/1202d13/linux-image-2.6.35-rc5_CustomDebugNV.01_amd64.deb.html
>
> Please run this command post installing or this kernel will fail to boot! :
> # mkinitramfs -k 2.6.35-rc5 -o /boot/initrd.img-2.6.35-rc5
>
> (sorry, im too lazy to properly include the initrd or create a PPA at this
> point :)
>
>
> On 10-07-19 04:11 PM, Dave Airlie wrote:
>
> Okay first attempt at a patch is
>
> http://people.freedesktop.org/~airlied/scratch/0001-nouveau-mux-switching-test-patch-1.patch
>
> Applies on top of current Linus tree, a dmesg from a pre-optimus
> machine with hybrid enabled should let me see the current state of the
> toggle,
> and if you are feeling brave you shuold be able to toggle the mux, so
> it might flip from intel to nothing, and flip back or it might do
> nothing.
>
> stuff should be logged in dmesg.
>
> Dave.
>
> On Sat, Jul 17, 2010 at 6:45 PM, Dave Airlie <airlied@xxxxxxxxx> wrote:
>
> So I'd really like to finish the _DSM support in nouveau so we can
> actually switch the GPU over on the non-optimus systems.
>
> There are two things left to do:
>
> a) figure out what values to pass the DSM method to trigger the MUX,
> It looks like method 0x5 is the one to trigger the mux switch but I've
> no idea yet what values to pass it to trigger the mux switch.
>
> b) figure out how to get the LVDS DDC lines and make nouveau find the
> panel, at the moment it fails to find the panel when booted and intel
> is in control.
>
> looking at (a) I expect we could pass a bunch of values to the ACPI
> method possibly using acpi_call to switch the mux and switch it back,
>
> It looks like passing 0 will return the current toggle status, then
> its a matter of working out which of the top bits are doing what,
>
> >From reading one DSDT I can see,
>
> if bit 31 set, then bit 30 is some sort of notify, then bits 25,26,27
> are used to work out some values stored in a TOGF
>
> otherwise bit 24 is used for something, then bits 12,13,14, and 3,2,1,
> and it stores some values for CRT/LCD/TVout, which may again be
> toggles.
>
> If someone with the hardware and can use acpi_call it would be nice to
> try and map out some of these things, at least initially a value that
> will turn the Intel LCD off and back on.
>
> The DSDT I'm using at the moment is attached to bug 16403.
>
> Dave.
>
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