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Radeon DPM Is Fantastic For Power Use, Thermal Performance

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  • Radeon DPM Is Fantastic For Power Use, Thermal Performance

    Phoronix: Radeon DPM Is Fantastic For Power Use, Thermal Performance

    One of the most exciting features of the upcoming Linux 3.11 kernel is the open-source Radeon driver's support for dynamic power management (DPM). We have already done preliminary benchmarks and found that Radeon DPM can boost the GPU's performance in cases where the boot clock speeds are slower than their rated frequencies (as in the case of AMD APUs and modern high-end GPUs). For other GPUs, Radeon DPM can lead to lower power consumption and better operating temperatures. Here's looking at the Linux Radeon DPM performance with the Linux 3.11 Git kernel.

    http://www.phoronix.com/vr.php?view=18980

  • Hokasito
    replied
    I have a serious problem and I don't now if it's related to kernel or opensource drivers. I'm using Xubuntu 13.04, I have a Mobility Radeon HD 3650 card and I use the latest version of the kernel (3.12) with DPM activated and the Oibaf PPA. Often, the screen freezes, goes black and then turns on again but there are graphical glitches (distortions and other things) and the system is unresponsive, then I have to do a forced shutdown. Does anyone else have the same problem?

    Thanks in advance.

    Leave a comment:


  • Melcar
    replied
    Lucky that your HD6870 works with RBE. Using it on my Sapphire HD6850 causes blue screens in Windows and radeon not to load at all in Linux. Shame, because that was my prefered method of managing fan speeds for my cards (and forcing overclocks).

    Leave a comment:


  • ObiWan
    replied
    The problem might be the BIOS fan values.
    Catalyst seems to ignore high minimum fan values and forces it's own.

    Minimum BIOS settings for my GigaByte 6870 Windforce was 70%, had to modify it with the Radeon Bios Editor from TechPowerUp to silence the card with the opensource driver.

    Leave a comment:


  • PsynoKhi0
    replied
    Originally posted by xtachx View Post
    Do you have dual monitors? I have dual screen and my fan runs at full speed with radeon drivers.
    Nope, single screen.

    Leave a comment:


  • xtachx
    replied
    Originally posted by PsynoKhi0 View Post
    After testing radeon.dpm=1 on the latest batch of LiveCDs featuring the 3.11 kernel (openSUSE 13.1 beta 1, Ubuntu 13.10 beta 2), it seems the fan on my Gigabyte HD7770 OC doesn't care much for it an spins at full speed. Is an HDD install required, in order to pull in some extra tidbits? The /lib/firmware/radeon folder seemed to be in order...
    Do you have dual monitors? I have dual screen and my fan runs at full speed with radeon drivers.

    Leave a comment:


  • PsynoKhi0
    replied
    After testing radeon.dpm=1 on the latest batch of LiveCDs featuring the 3.11 kernel (openSUSE 13.1 beta 1, Ubuntu 13.10 beta 2), it seems the fan on my Gigabyte HD7770 OC doesn't care much for it an spins at full speed. Is an HDD install required, in order to pull in some extra tidbits? The /lib/firmware/radeon folder seemed to be in order...

    Leave a comment:


  • smekras
    replied
    @agd5f

    are there any news on UVD support for RS770/880?

    Leave a comment:


  • agd5f
    replied
    Originally posted by chrisr View Post
    My impression was that RV770_smc.bin was released alongside an updated R700_rlc.bin, and that DPM support requires both of these. Or am I mistaken?
    UVD requires an updated RLC.

    Leave a comment:


  • chrisr
    replied
    Wasn't the R700_rlc.bin also updated for DPM support?

    Originally posted by agd5f View Post
    RV770_smc.bin is the only new ucode you need for dpm, however you still need all of the old ucode images (me, pfp, rlc).
    My impression was that RV770_smc.bin was released alongside an updated R700_rlc.bin, and that DPM support requires both of these. Or am I mistaken?

    Leave a comment:

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