[Bug 100279] New: [i915] [SKL] sound resampling issues using HDMI output

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100279

            Bug ID: 100279
           Summary: [i915] [SKL] sound resampling issues using HDMI output
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: rio at eta-ori.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

In the current stable (4.10.3-1) and mainline (4.11.0-rc2) kernels of Arch
Linux   I noticed resampling issues when playing 44.1kHz audio using the HDMI
output of my i915 chipset on a Asus Z170-A motherboard. This issue wasn't
present in previous releases but I didn't take the time to bisect and find the
relevant commit yet.

In the following, hw:0,3 refers to the HDMI output of the HDA Intel PCH.

    speaker-test -D hw:0,3 -c 2 -r 48000 -f 440 -t sine

This produduces a fine 440Hz sine wave.

    speaker-test -D hw:0,3 -c 2 -r 44100 -f 440 -t sine

This produces a way lower frequency sound with clicking noises about twice a
second.

Running the same on the analog output doesn't result in any resampling issues.

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