From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 75985] [NVC1] HDMI audio device only visible after rescan
Date: Wed, 27 Dec 2017 17:35:20 +0000 [thread overview]
Message-ID: <bug-75985-8800-oEZ6widccu@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-75985-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=75985
--- Comment #25 from Daniel Drake <dan-LrsmPHowOvpd3aXB8m+yKQ@public.gmane.org> ---
I found the difference. When I previously tested and found HDMI audio to be
working after the setpci,unload,rescan approach, I was using the nvidia
proprietary driver. HDMI audio PCI device was then detected, the ELD files show
the monitor detected, and HDMI audio works.
In the patch above, I am using nouveau. The HDMI audio PCI device is now
detected automatically, the HDMI video output is working and active, but the
ELD files show that no HDMI monitor was detected on the audio side.
I checked with HDA verbs directly:
# hda-verb /dev/snd/hwC1D0 6 GET_PIN_SENSE 0
With the setpci+unload+rescan approach on nouveau, this always returns value 0,
even with HDMI video output active and working.
With the setpci+unload+rescan approach on nvidia's proprietary drivers, this
returns 0 after loading the modules. However upon starting X, it starts
returning 0xc0000000 and HDMI audio output works fine.
So in addition to the games with the magic register, the nvidia proprietary
driver is doing something else as well which is needed to make HDMI audio work.
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next prev parent reply other threads:[~2017-12-27 17:35 UTC|newest]
Thread overview: 123+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-10 15:56 [Bug 75985] New: HDMI audio device only visible after rescan bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
[not found] ` <bug-75985-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>
2014-03-10 16:00 ` [Bug 75985] [NVC1] " bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2014-03-10 16:15 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2014-03-10 23:14 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2014-03-10 23:14 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2014-09-15 23:52 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2014-09-16 6:33 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2016-07-16 17:20 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2016-11-05 22:30 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2016-12-22 23:04 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2016-12-22 23:05 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2017-09-26 10:04 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2017-09-26 22:50 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2017-09-28 12:33 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2017-09-30 2:45 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
2017-10-04 21:39 ` bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ
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