[alsa-devel] [AMD OSS Driver Bug] Only 2 Channel Audio Detected on HDMI

[Anssi Hannula]

18.07.2014, 03:33, Mathew Nichols kirjoitti:
> Hello,

Hello,

And sorry about the lengthy delay in response.

> Using Ubuntu Mini Kernel v.3.15.3-generic (OSS drivers) I cannot pass 7.1
> LPCM and cannot bitstream HD Audio formats. XBMC only detects 2 channels.
> The xbmc.log only reports m_channel=FL,FR. I can also bitstream AC3 / DTS.
> I have worked closely with fritsch. We believe this is a kernel audio error
> with my GPU (AMD 5670.) The setup is dual boot and the Windows partition
> works correctly, as does the older Ubuntu kernel with AMD proprietary
> drivers. Debug information below.
> 
> • Kernel log (dmesg with drm.debug=0xe):http://paste.ubuntu.com/7811317
> • Driver Codec: http://paste.ubuntu.com/7811321
> • xbmc.log: http://paste.ubuntu.com/7805000

Strange. Can you please report the output of:
speaker-test -D "hdmi:CARD=HDMI,DEV=0" -c8

Also, your kernel log is cut short, and does not contain any audio
entries. Maybe try without drm.debug?

> Using Ubuntu Mini Kernel v.3.13.0-32-generic (AMD proprietary drivers 14.4)
> I CAN pass 7.1 LPCM and I can then bitstream HD Audio formats. Windows 7
> also detects 7.1 LPCM @ 192khz and will bitstream all HD Audio formats. The
> xbmc.log reports all 8 channels for m_channels on both Ubuntu Mini and
> Windows 7. Debug information below.
> 
> • Kernel log (dmesg with drm.debug=0xe):http://paste.ubuntu.com/7811473
> • Driver Codec: http://paste.ubuntu.com/7811478
> • xbmc.log: http://paste.ubuntu.com/7811488



-- 
Anssi Hannula