Announcement

Collapse
No announcement yet.

Intel, NVIDIA Hybrid GPU Switching On Linux Nears

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • phoronix
    started a topic Intel, NVIDIA Hybrid GPU Switching On Linux Nears

    Intel, NVIDIA Hybrid GPU Switching On Linux Nears

    Phoronix: Intel, NVIDIA Hybrid GPU Switching On Linux Nears

    A month after making some small progress towards "hybrid graphics switching" on Linux to allow notebooks with dual GPUs (usually a low-power integrated graphics processor and a performance-oriented but high-powered discrete GPU), Red Hat's David Airlie is beginning to get things working for Intel and NVIDIA GPU combos on notebooks such as the Lenovo ThinkPad T410. Hybrid graphics on Linux still sucks, but at least it's getting better...

    http://www.phoronix.com/vr.php?view=ODg3Nw

  • curaga
    replied
    @airlied

    Thanks. That's the kind of info I was looking for in the news post

    Leave a comment:


  • airlied
    replied
    Originally posted by curaga View Post
    OK, I'll spell it out :P

    One of the laptops wired in the way required by the Nvidia(tm) Optimus(tm) proprietary technology(tm) mark, and advertised as having such. Or the older ones, without said (tm) mark.

    I know it is, after googling the model name. The point was I shouldn't have needed to, that is essential info in a news post like this.
    If only it was that simple.

    There are Rev1, Rev2 and optimus switchable laptops.

    We can ignore Rev 1 - they required a reboot to switch

    This code is mostly towards the Rev 2 switchable, which switches the physical outputs between the chips under ACPI control.

    Optimus is a different kettle of fish, and is also muddied by the fact that not all Optimus laptops have a Rev 2 compatability mode, most of them do, but I think there are some out there which don't have the physical mux anymore. So the Lenovo T410s has Optimus but it also has the ability to act like Rev 2, hence why this code was possible.

    Optimus isn't "wired" its a pure sw solution built on a extra copy engine on the discrete GPU which talks for PCIE like anything normal would. No extra wires.

    Leave a comment:


  • airlied
    replied
    Originally posted by madjr View Post
    You have done more than enough, am we're very grateful.

    But there needs to be some incentive for them to port their stuff over, without having to make you do that work for them.

    Even if we had the same marketshare as macs, they would probably still be this stubborn, so there has to be a roadblock somewhere.

    What is really stopping them?
    They have no customer demand. (remember you are not a customer of nvidia, you are a customer of an OEM).

    Leave a comment:


  • madjr
    replied
    Originally posted by airlied View Post
    How do you suggest we work with nvidia? I work in the open, they know I'm working on it, we don't have source to their code, they have all ours.

    I'm really wondering how I can do any more to make your wish come true.

    Dave.
    You have done more than enough, am we're very grateful.

    But there needs to be some incentive for them to port their stuff over, without having to make you do that work for them.

    Even if we had the same marketshare as macs, they would probably still be this stubborn, so there has to be a roadblock somewhere.

    What is really stopping them?

    Leave a comment:


  • curaga
    replied
    OK, I'll spell it out :P

    One of the laptops wired in the way required by the Nvidia(tm) Optimus(tm) proprietary technology(tm) mark, and advertised as having such. Or the older ones, without said (tm) mark.

    I know it is, after googling the model name. The point was I shouldn't have needed to, that is essential info in a news post like this.

    Leave a comment:


  • BlackStar
    replied
    Originally posted by curaga View Post
    Neither the article or the blog post mentions whether this is the "optimus" thingy or one of the earlier two-gpus-on-a-laptop thingies.
    The "optimus" thingy is a windows-only, closed-source technology. Two guesses as to which thingy this article is about.

    Leave a comment:


  • Tgui
    replied
    Good work!!!

    Leave a comment:


  • curaga
    replied
    Neither the article or the blog post mentions whether this is the "optimus" thingy or one of the earlier two-gpus-on-a-laptop thingies.

    Leave a comment:


  • wpoely86
    replied
    It's cool that the open source drivers already have some support for this, while the proprietary drivers have nothing.

    Nice work!

    Leave a comment:

Working...
X