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AMDGPU vs. Radeon GCN 1.0/1.1 Performance On Linux 4.9 DRM-Next

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  • #41
    For ppl wanting to use/test Vulkan, use the branch radv-submit instead of semi-interesting. It seam to be in the process to be merged with Mesa.. And that branch have a 3-4 days old mesa instead of 2-3 month old mesa. Confirm that Nine is also back to working with that branch!

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    • #42
      Looks like the Radeon Driver performs as good as or bettter in several benchmarks. Unfortunately, I need to use the AMD PRO driver to play two games on my R9-270
      1. ARK Survival Evolved
      2. Dying Light
      Anyone else able to get those two games working on the OSS Radeon drivers?

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      • #43
        My recollection was that Dying Light checks for an OpenGL compatibility profile, however (a) I don't know what level it's looking for (pretty low AFAIK, maybe just 3.3) and (b) I don't know if it actually *needs* compatibility mode (deprecated extensions used alongside new-to-the-GL-level extension) or not.

        A while back people were over-riding Mesa to report 3.3 compatibility mode and then the GL checks passed, but game still crashed which suggests it might actually *use* compatibility mode (boo). Haven't seen anyone try that recently though.

        Not sure about ARK Survival Evolved - I think I remember hearing someone say it needed GL 4.5 but all the posts I found suggested GL 3.0 should be enough.
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        • #44
          Where is 7850? A lot more people are using 7850's than 7950's.

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          • #45
            Originally posted by grndzro View Post
            Where is 7850? A lot more people are using 7850's than 7950's.
            The 270X and 370 are pretty close - same Pitcairn die as 7850/7870, albeit with a couple of years of added fab process tweaks.
            Last edited by bridgman; 06 October 2016, 10:45 AM.
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            • #46
              Originally posted by bridgman View Post

              The 270X and 370 are pretty close - same Pitcairn die as 7850/7870, albeit with a couple of years of added fab process tweaks.
              So what would I do to get it working in Arch?

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              • #47
                Originally posted by MrCooper View Post
                The amdgpu kernel driver only supports HDMI/DP audio with DAL[...]
                Are you sure about that? I'm using this branch: agd5f's drm-next-4.9-wip (which has no DAL)
                Audio over HDMI is working fine for my HAWAII card (with amdgpu loaded of course).

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                • #48
                  Originally posted by droste View Post

                  Are you sure about that? I'm using this branch: agd5f's drm-next-4.9-wip (which has no DAL)
                  Audio over HDMI is working fine for my HAWAII card (with amdgpu loaded of course).
                  Now that is interesting.
                  Did you do any magic?
                  I didn't try that branch though.

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                  • #49
                    Hawaii is GCN 1.1 I believe, maybe that's why.

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                    • #50
                      I did nothing special. Just enable the amdgpu driver in the kernel config, blacklist radeon and boot. But yeah it's a different generation than yours. Just wanted to say, that HDMI sounds seems to be possible without DAL in general.
                      Since I don't have any other generation, I can't tell you where it works and where not, sorry :-)

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