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From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 199493] New: no audio over HDMI with amdgpu.dc=1 (on R9 380X)
Date: Tue, 24 Apr 2018 15:26:08 +0000	[thread overview]
Message-ID: <bug-199493-2300@https.bugzilla.kernel.org/> (raw)

https://bugzilla.kernel.org/show_bug.cgi?id=199493

            Bug ID: 199493
           Summary: no audio over HDMI with amdgpu.dc=1 (on R9 380X)
           Product: Drivers
           Version: 2.5
    Kernel Version: 4.17.0-rc2
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
          Assignee: drivers_video-dri@kernel-bugs.osdl.org
          Reporter: haro41@gmx.de
        Regression: No

Audio over HDMI doesn't work (no sound), if dc is enabled (amdgpu.dc=1).
Hardware is R9 380X (Tonga), i use ALSA only.

With dc disabled (amdgpu.dc=0), audio basically works, but i get 'noisy' sound
usually.

The only way to get correct audio over HDMI is currently:

disable dc (amdgpu.dc=0) and start windows once, then warm boot to linux.

It looks like: the windows driver is initializing the hardware correctly, while
amdgpu doesn't.

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             reply	other threads:[~2018-04-24 15:26 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-24 15:26 bugzilla-daemon [this message]
2018-04-25 16:05 ` [Bug 199493] no audio over HDMI with amdgpu.dc=1 (on R9 380X) bugzilla-daemon
2018-05-19  9:08 ` bugzilla-daemon
2018-05-19 19:25 ` bugzilla-daemon
2018-05-19 20:46 ` bugzilla-daemon
2018-05-20 10:22 ` bugzilla-daemon
2018-05-28 10:46 ` bugzilla-daemon

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