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radeon HDMI audio broken in 4.0.x?
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Aquous
l33t
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Joined: 08 Jan 2011
Posts: 700

PostPosted: Wed May 06, 2015 2:17 pm    Post subject: radeon HDMI audio broken in 4.0.x? Reply with quote

Ever since I upgraded to gentoo-sources-4.0.0 (and now -4.0.1), I get the following messages in my dmesg when the radeon module is loaded:
Code:
$ dmesg|grep HDMI
[    0.455437] input: HDA ATI HDMI HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1e.0/0000:05:02.0/0000:06:00.1/sound/card1/input2
[   70.286241] [drm]   HDMI-A-1
[   80.867942] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   81.168908] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   81.469904] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   81.770901] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   82.071907] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   82.372756] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   82.673888] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   82.974885] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD
[   83.275883] sound hdaudioC1D0: HDMI ATI/AMD: no speaker allocation for ELD

These 'no speaker allocation for ELD' are new, and what's also new is that I'm not getting any sound out of my radeon-connected TV any more (even though pulseaudio claims the sound is getting through just fine, i.e. it can see the HDMI output and insists it's playing sound when it should be).

Is this a regression in the kernel or did I miss something? (I've already tried adding radeon.audio=1 to my kernel command line; no difference).

The card is a PCI (not PCIe!) HD5450, detected by the kernel as 'Mobility Radeon HD 5430'. It's worked fine in the past. This is in a desktop computer running full ~amd64.
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Lord_Raven
Apprentice
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Joined: 24 Apr 2005
Posts: 225
Location: Sosnowiec

PostPosted: Sat May 16, 2015 12:54 pm    Post subject: Reply with quote

I have the same problem since kernel 4.0.0. I saw few changes related to radeon on 4.0.3, but non of them has resolved this issue.
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Chewi
Developer
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Joined: 01 Sep 2003
Posts: 875
Location: Edinburgh, Scotland

PostPosted: Thu May 28, 2015 10:02 pm    Post subject: Reply with quote

Same here with my HD 4670 although I do get sound from my monitor, just not from my AV unit. I use xrandr to switch output between the two. It hasn't been fixed as of 4.1-rc5 either. I mess with the kernel on occasions so I build from git rather than using gentoo-sources. I'm currently doing a git bisect to track down the issue. 13 steps to go. 8O
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Chewi
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Joined: 01 Sep 2003
Posts: 875
Location: Edinburgh, Scotland

PostPosted: Fri May 29, 2015 9:45 pm    Post subject: Reply with quote

Got the bastard! It was commit 8ffea8570d5a7e9dd3c10349, amusingly titled radeon/audio: removed unnecessary CRC control programing. Not so unnecessary, eh? :wink: The change effects both my card and Evergreen. I wasn't sure whether the change is still correct for Evergreen but given that Aquous' card is an Evergreen, it seems not. I'll file a bug report.
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Chewi
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Joined: 01 Sep 2003
Posts: 875
Location: Edinburgh, Scotland

PostPosted: Fri May 29, 2015 10:15 pm    Post subject: Reply with quote

And here is the bug report. You may want to subscribe to it.
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Aquous
l33t
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Joined: 08 Jan 2011
Posts: 700

PostPosted: Sat May 30, 2015 11:17 am    Post subject: Reply with quote

Thank you for managing to bisect the issue! :D
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