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Linux 3.7 May Help Radeon Users With Power

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  • Linux 3.7 May Help Radeon Users With Power

    Phoronix: Linux 3.7 May Help Radeon Users With Power

    While the main DRM pull request for the Linux 3.7 kernel has yet to be submitted to Linus Torvalds, the Radeon DRM pull for the Linux 3.7 was just sent into David Airlie as the DRM sub-system maintainer...

    http://www.phoronix.com/vr.php?view=MTE5Nzg

  • #2
    I can has Kernel 3.7 finished release right now?
    *makes cute huge kitty eyes*

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    • #3
      Finally, I can adjust brightness on my EliteBook 8460p with radeon card!

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      • #4
        Finally!

        Finally!!

        Plz, give me 'dynpm'

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        • #5
          Originally posted by Michael
          The reworked PLL handling can now power down extra PLLS
          Originally posted by Alex
          This also allows us to power down extra PLLs when we can share a single one across multiple displays which saves power.
          The news is not the powering down of unused PLLs, but the sharing of PLLs (which may yield additional PLLs that can be idle). This will only save power in certain multi-monitor configurations. As far as I know, PLLs can only be shared across multiple DP monitors, so there's no effect for most users.

          Not saying the change isn't welcome, just don't expect power savings on your laptop (or any machine where power usage is actually important).

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          • #6
            Originally posted by rohcQaH View Post
            The news is not the powering down of unused PLLs, but the sharing of PLLs (which may yield additional PLLs that can be idle). This will only save power in certain multi-monitor configurations. As far as I know, PLLs can only be shared across multiple DP monitors, so there's no effect for most users.

            Not saying the change isn't welcome, just don't expect power savings on your laptop (or any machine where power usage is actually important).
            and improved ACPI support for GPU interaction.
            Any chance for dynamic clocking?

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            • #7
              Originally posted by Mait View Post
              Any chance for dynamic clocking?
              They have tried to release code for pm but it failed the legal review, afaik.

              I find it interesting, though, how could the "ondemand" frequency governor be IP. I mean it's just a re-clocking algo, isn't it?

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              • #8
                Originally posted by HokTar View Post
                They have tried to release code for pm but it failed the legal review, afaik.

                I find it interesting, though, how could the "ondemand" frequency governor be IP. I mean it's just a re-clocking algo, isn't it?
                Maybe there is patents for 'How can we know when we do reclocking'.

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                • #9
                  If at last i can switch mine intel/amd card. I'm happy.

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                  • #10
                    The only viable alternative is...

                    you guessed it .... NVIDIA ! At least they release a full-blown (stable, supports latest opengl, proper power management, good performance, CUDA) driver instead of that CRAP AMD is giving us. The quality of the AMD driver is insulting, and they have had a lot of years to come up with a proper solution... do you actually have a computer science degree guys ?

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                    • #11
                      Ok. 1 question, what is PLL?

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                      • #12
                        In this context, presumably Phase Locked Loop.

                        Basically a clock generator using a variable frequency oscillator -- output of the oscillator is divided down then the result is compared to a reference frequency, then output of the comparison is used to tweak the oscillator frequency up or down. Think of it as a "frequency multiplier" that lets you take a reference frequency then multiply it by a programmable amount to get the frequency you want.

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                        • #13
                          Originally posted by wargames View Post
                          you guessed it .... NVIDIA ! At least they release a full-blown (stable, supports latest opengl, proper power management, good performance, CUDA) driver instead of that CRAP AMD is giving us. The quality of the AMD driver is insulting, and they have had a lot of years to come up with a proper solution... do you actually have a computer science degree guys ?
                          Obligatory link: http://phoronix.com/forums/showthrea...uck-They-don-t

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                          • #14
                            Originally posted by RussianNeuroMancer View Post
                            All graphic card drivers cards suck in their own way. You just have to know which will suck less for your specific workload.

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                            • #15
                              Originally posted by 89c51 View Post
                              All graphic card drivers cards suck in their own way. You just have to know which will suck less for your specific workload.
                              Probably the truth.

                              As for me, the R600 Gallium 3D drivers serve my needs. So I for one am already happy, although improvements are of course always welcome.

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