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  • Linux 4.8-rc1 Kernel Released

    Phoronix: Linux 4.8-rc1 Kernel Released

    Just like clockwork, the first release candidate / development version of the Linux 4.8 kernel is now available for testing...

    http://www.phoronix.com/scan.php?pag...4.8-rc1-Kernel

  • #2
    Man, the R9 290 still have performance problems. It was established that it is a Ubuntu packaging problem or a Kernel problem?

    Better make some noise now since this is supposed to be in 16.10, correct?

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    • #3
      Originally posted by [email protected] View Post
      Man, the R9 290 still have performance problems.
      What do you mean in particular?

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      • #4
        VCE with omx and vaapi on Polaris is a bit slow with 4.7. Much better with 4.8-rc1, but it randomly locks up: https://bugs.freedesktop.org/show_bug.cgi?id=97240

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        • #5
          Originally posted by [email protected] View Post
          Man, the R9 290 still have performance problems. It was established that it is a Ubuntu packaging problem or a Kernel problem?

          Better make some noise now since this is supposed to be in 16.10, correct?
          is not ubuntu or kernel problem, it's amd problem and their garbage drivers

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          • #6
            Originally posted by atomsymbol View Post

            What do you mean in particular?
            Works with only 15/20% of the original performance. It is happening since Kernel 4.7. Michael did a benchmark confirming the problem.

            I remember one or two guys saying that it must be a Ubuntu problem, because it is not happening in some distro with the 4.7 kernel.

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            • #7
              i've installed linux 4.8rc1 on ubuntu 16.04 but not work (i've installed deb file from kernel.ubuntu.org)

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              • #8
                Originally posted by [email protected] View Post
                Works with only 15/20% of the original performance. It is happening since Kernel 4.7. Michael did a benchmark confirming the problem.

                I remember one or two guys saying that it must be a Ubuntu problem, because it is not happening in some distro with the 4.7 kernel.
                AFAIK we have not yet been able to reproduce this in house. Not saying there isn't a problem, just saying that there is something unusually configuration-specific about it.

                Has anyone seen a bugzilla ticket for it ? Closest I could find was one for 290x DPM not working, but that was for amdgpu not radeon. This is one of those cases where a few very precise bug tickets from people seeing the problem could help.
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                • #9
                  Originally posted by bridgman View Post

                  AFAIK we have not yet been able to reproduce this in house. Not saying there isn't a problem, just saying that there is something unusually configuration-specific about it.

                  Has anyone seen a bugzilla ticket for it ? Closest I could find was one for 290x DPM not working, but that was for amdgpu not radeon. This is one of those cases where a few very precise bug tickets from people seeing the problem could help.
                  I filed a bug report for it: https://bugs.freedesktop.org/show_bug.cgi?id=97260

                  Keep in mind that I use Kubuntu 16.04 and Michel did the benchmarks showing the problem using Ubuntu 16.04. If it is a packaging problem is good to know fast so I can knock at Canonical's bug tracker.

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                  • #10
                    Great, thanks.

                    If anyone is seeing the problem with anything other than a 290 can you please make a note in the bugzilla ticket ?
                    Last edited by bridgman; 09 August 2016, 02:03 PM.
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