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AMD Is Disabling DPM Support For RV770 GPUs

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  • AMD Is Disabling DPM Support For RV770 GPUs

    Phoronix: AMD Is Disabling DPM Support For RV770 GPUs

    For the many owners of "RV770" hardware out there with the once popular Radeon HD 4850 and HD 4870 graphics cards, AMD open-source developers are now proposing the dynamic power management (re-clocking) support be disabled by default to deal with open bugs...

    http://www.phoronix.com/vr.php?view=MTY2ODE

  • #2
    As far as I can tell, I haven't encountered any issues with DPM on my HD4850 with the 3.14 kernel.
    I had issues when I tried to enable it with the 3.12 kernel, but 3.13 seems to have solved these.

    If it is disabled in the next release, I will certainly end up re-enabling it.

    Comment


    • #3
      AMD seems to be disabling a lot of features for older GPU owners lately.

      Comment


      • #4
        Originally posted by Dukenukemx View Post
        AMD seems to be disabling a lot of features for older GPU owners lately.
        Like what, exactly? AFAIK, DPM is the only thing they've really been messing around with like that.

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        • #5
          I thought DPM was enabled in 3.14 and not 3.13 or was that for other models?

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          • #6
            Originally posted by AJenbo View Post
            I thought DPM was enabled in 3.14 and not 3.13 or was that for other models?
            It was enabled for all cards before SI in 3.13, and some SI cards had it disabled. 3.14 enabled it for pretty much everything, I think besides some r series parts.

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            • #7
              Originally posted by smitty3268 View Post
              Like what, exactly? AFAIK, DPM is the only thing they've really been messing around with like that.
              I think he is referring to HyperZ.

              I personally have had no problems with DPM myself, but I am using an RV730.

              Comment


              • #8
                I've had problems with a HD3450 (RV610) on ubuntu on my notebook since I was testing DPM, back to kernel 3.11. To be specific, sometimes the system hangs at boot with a black screen and everything is frozen.

                With kernel 3.14-rc7 it happened just once in a pair of weeks.

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                • #9
                  Odd. As far as I know, only Radeon HD 6800s were affected by DPM on kernel 3.13, as I had reported it several RCs before it went stable and it was finally disabled by default in 3.14. My Radeon HD 4870 machine runs perfectly fine with kernel 3.13 and DPM enabled.

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                  • #10
                    Now I will have to enable hyperz and DPM by hand. I hope the list doesnt grow up.

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                    • #11
                      har har har ATI(AMD) is teh shit with GPUz! NOT!

                      [I'm going to go offtopic kinda here, since I've had nothing but shitzor experience w/ATI(AMD) software EVAR]

                      Hell, I have a notebook with their mobile version of the 4850, the 4850 Radeon Mobility HD which was the same as their desktop excepting slightly lower core/memory clocks.

                      I suffered through YEARS of UTTER CRAP driver support, theoretical bugfixes(lulz), while dealing with copious new bugs before being dumped out of their mainline quite quickly(i.e. they had no f'ing idea wtf they were doing).

                      So, I'd say that they still have no f'ing cluez, their sw boyz are just godawful, as I learnt last night attempting to up a Winders, mind you, based system w/get this an FX-9590 + R9 280X to their "beta"(alpha is a better description as their "WHQL" is beta at best) 14.3 drivers(mind you after using a selection in succession of builtin old driver uninstall, then their own driver removal utility) only to get well display driver installs(thank all the f'ing gods) then either it craps out immediately(rinse and repeat with their own driver removal tools), or it get's to install crapalyst control center then craps out(repeat and rinse), or it installs crapti experience(or WTF they call their halfassed version of geforce experience) and then craps outs with a lengthy error log w/o installing crapalyst control center. (I gave up at this point and am storing the box until I have time to f'around w/it using guru3d's ddu at least the display driver installs every time, but I'z gotz no controlz overz itz, so it just runs at defaults... mind you this is under their supposedly better supported winderz... linux was just a cluster fuck of even worse than dealing with nvidia optimus proportions and I'll leave it at that...)

                      Christ! I'd swear that ATI(oops sorry AMD) has a million monkies ATTEMPTING to write drivers for their lackluster, spaceheating GPUs and have, well hell, since I can recall since I've NEVER had a "good" experience with their drivers.

                      Meanwhile, beta nvidia drivers only throw errors on RARE occasions and MOST of those are spurious, and I'm talking ATI/nVidia experience dating back to c. 2000, or Rage 128 Pro v. GF2(yeah linux support for both sucked at the time, but by the gods ati drivers were still crap back then and they STILL HAVE NOT LEARNT THE ERROR OF THEIR CRAPPY WAYZ! IM SURPRISED THAT PUNTERS STILL BUY THEIR CRAP AS let's face it their new GCN ain't even up to kepler level unless their crap drivers are dragging it down so much... sorry to say... (the 4850 looked good and mostly kinda worked, but borked out from drivers WAY too often)).

                      hmmm... mebbe delete me but I just had to vent about ATI/AMD, their crap recent hw, and continously crap sw, and am sick and f'ing tired of hearing about wah OSS, which would be nice if it actually worked any bettar than the official sw, but nope, just crap(crapalyst) or crappier(OSS radeonsi or whatevar teh f' it's called, just a PR campaign by ATI/AMD, and a phailwhale one in my book since it's pretty well halfassed at best!)

                      ...so, I'll be sauntering back to my nice perfectly functional nv blobs, unapologetically, after all they just WORK. (and yes I'm using their "betas" on some of my systems both windows and linux, only problem is on notebooks optimus is poorly supported from what I can see of freetardedness, but it works a treat under winderz...)

                      Comment


                      • #12
                        Originally posted by cutterjohn View Post
                        [I'm going to go offtopic kinda here, since I've had nothing but shitzor experience w/ATI(AMD) software EVAR]

                        ...

                        ...so, I'll be sauntering back to my nice perfectly functional nv blobs, unapologetically, after all they just WORK. (and yes I'm using their "betas" on some of my systems both windows and linux, only problem is on notebooks optimus is poorly supported from what I can see of freetardedness, but it works a treat under winderz...)
                        This trolling is fantastic. Keep fighting the good fight John.

                        Just to make sure everyone is aware, AMD employs 6 developers on Mesa. They employ at least a hundred on Catalyst. Those 6 are absolutely fantastic, so criticize the company for not putting more hands on Mesa (which, really, they should be doing for their long term viability as a company - moving into the ARM / mobile space with tightly integrated FOSS drivers auditable by enterprise customers on next generation Linux based convergence devices (Ubuntu Phone, Plasma Active, etc) will be huge, I think).

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                        • #13
                          RV770 includes RadeonHD 4890 cards too as far as I know.

                          Code:
                          OpenGL vendor string: X.Org
                          OpenGL renderer string: Gallium 0.4 on AMD RV770
                          OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.1.1

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                          • #14
                            For the majority of users, dpm on rv770 is stable, that's why we enabled it by default originally. Unfortunately, you don't get quite the same testing coverage until you enable something by default. Once you do, all the corner cases suddenly appear.

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                            • #15
                              Originally posted by Hamish Wilson View Post
                              I think he is referring to HyperZ.

                              I personally have had no problems with DPM myself, but I am using an RV730.
                              Maybe. It's just that he specifically mentioned older cards, and hyperz is disabled for everything.

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