|
Forgot to mention that this is running on a UL30VT,
and there is not so much as a flicker from the screen when manipulating the switch file On 10-07-23 12:14 AM, octagonhead 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<[email protected]> 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. >> > _______________________________________________ > Mailing list:https://launchpad.net/~hybrid-graphics-linux > Post to :[email protected] > Unsubscribe :https://launchpad.net/~hybrid-graphics-linux > More help :https://help.launchpad.net/ListHelp |
_______________________________________________ Mailing list: https://launchpad.net/~hybrid-graphics-linux Post to : [email protected] Unsubscribe : https://launchpad.net/~hybrid-graphics-linux More help : https://help.launchpad.net/ListHelp
