[alsa-devel] Missing surround channels with Nvidia HDMI & snd-hda-intel driver
VDR User
user.vdr at gmail.com
Wed Nov 15 17:34:57 CET 2017
>> It just tried kernel 4.6-rc1 and the problem is present there as well.
>> Is there a list of patches between stable kernel 4.5.7 and 4.6-rc1
>> somewhere? I can try to revert each of them one at a time if so.
>> Unless someone has any better idea to narrow this down to the
>> offending commit?
>
> There were a significant amount of changes between 4.5 and 4.6
> regarding HD-audio HDMI/DP due to DP-MST support and the movement of
> chmap stuff into sound/hda.
>
> Both can be a culprit...
>
> For checking the former, could you try the following?
> - Checkout 4.5.7 git branch
> - merge (not cherry-pick) the commit 022f344b41a5
> % git merge 022f344b41a5
>
> This will bring DP-MST changes on top of 4.5.7.
>
> Then build this and check whether it shows the problem. If yes, you
> can easily bisect between 4.5.7 and here. If it doesn't show a
> problem, the problem is in the rest changes in 4.6-rc1.
Hi Takashi,
I did:
git clone https://github.com/torvalds/linux.git
cd linux
git checkout 022f344b41a5
After compiling, audio is working correctly with that commit:
~$ speaker-test -c 6 -t wav
speaker-test 1.1.3
Playback device is default
Stream parameters are 48000Hz, S16_LE, 6 channels
WAV file(s)
Rate set to 48000Hz (requested 48000Hz)
Buffer size range from 64 to 5440
Period size range from 32 to 2720
Using max buffer size 5440
Periods = 4
was set period_size = 1088
was set buffer_size = 5440
0 - Front Left
4 - Front Center
1 - Front Right
3 - Rear Right
2 - Rear Left
5 - LFE
Time per period = 8.526391
Do you happen to known which commit I can try next that *should* have
the problem so I can git bisect from there?
Thanks!
> thanks,
>
> Takashi
>
>>
>> Thanks
>> Derek
>>
>> On Tue, Nov 14, 2017 at 7:22 AM, VDR User <user.vdr at gmail.com> wrote:
>> > Ok so after compiling a bunch of older kernels, I found that the
>> > problem started with 4.6.0. Kernel 4.5.7 worked fine. With 4.6.0 I
>> > get:
>> >
>> > ~$ speaker-test -c 6 -t wav
>> >
>> > speaker-test 1.1.3
>> >
>> > Playback device is default
>> > Stream parameters are 48000Hz, S16_LE, 6 channels
>> > WAV file(s)
>> > Rate set to 48000Hz (requested 48000Hz)
>> > Buffer size range from 64 to 5440
>> > Period size range from 32 to 2720
>> > Using max buffer size 5440
>> > Periods = 4
>> > was set period_size = 1088
>> > was set buffer_size = 5440
>> > 0 - Front Left
>> > 1 - Front Right
>> > 3 - Rear Right
>> > 2 - Rear Left
>> > 4 - Unknown
>> > 5 - Unknown
>> > Time per period = 8.524856
>> >
>> >
>> > However, with 4.5.7 it was:
>> >
>> > ~$ speaker-test -c 6 -t wav
>> >
>> > speaker-test 1.1.3
>> >
>> > Playback device is default
>> > Stream parameters are 48000Hz, S16_LE, 6 channels
>> > WAV file(s)
>> > Rate set to 48000Hz (requested 48000Hz)
>> > Buffer size range from 64 to 5440
>> > Period size range from 32 to 2720
>> > Using max buffer size 5440
>> > Periods = 4
>> > was set period_size = 1088
>> > was set buffer_size = 5440
>> > 0 - Front Left
>> > 4 - Front Center
>> > 1 - Front Right
>> > 3 - Rear Right
>> > 2 - Rear Left
>> > 5 - LFE
>> > Time per period = 8.524740
>> >
>> > In both cases the audio announced the correct speaker position, but
>> > the Front Center & LFE channels are labeled/reported incorrectly as
>> > "Unknown" starting in 4.6.0. I looked at the 4.6 changelog audio
>> > section (https://kernelnewbies.org/Linux_4.6#head-59f6bad0670ddd6511d239b83c36575b139798bf)
>> > but didn't see anything Nvidia-specific, or anything that sounded like
>> > it would cause this problem. Any ideas on the best way to proceed
>> > finding the offending commit?
>> >
>> > Thanks!
>> > Derek
>> >
>> >
>> > On Mon, Nov 13, 2017 at 11:03 AM, Takashi Iwai <tiwai at suse.de> wrote:
>> >> On Mon, 13 Nov 2017 18:18:39 +0100,
>> >> VDR User wrote:
>> >>>
>> >>> Hi Takashi,
>> >>>
>> >>> Thanks for your reply. I have no clue unfortunately as I just noticed
>> >>> it now. Is there a previous kernel you could recommend I try prior to
>> >>> any or big changes to how snd-hda-intel works?
>> >>
>> >> Well, nothing I can think of for now, that's why I asked about testing
>> >> the older kernel. I'd do a bisection, e.g. try stable kernels like
>> >> 4.4.x or 4.9.x, depending on the "previously working" version you
>> >> remember, then go to the middle between them if it hits the
>> >> regression.
>> >>
>> >>
>> >> Takashi
>> >>
>> >>>
>> >>> -Derek
>> >>>
>> >>> On Mon, Nov 13, 2017 at 8:40 AM, Takashi Iwai <tiwai at suse.de> wrote:
>> >>> > On Sun, 12 Nov 2017 19:01:14 +0100,
>> >>> > VDR User wrote:
>> >>> >>
>> >>> >> Hi. I just noticed that I'm missing some surround channels and I think
>> >>> >> it may be a bug in the alsa drivers because my current setup used to
>> >>> >> work just fine.
>> >>> >
>> >>> > If it's a regression, which kernel did work and which started a
>> >>> > regression? This alone would be a good help for tracking down the
>> >>> > problem.
>> >>> >
>> >>> >
>> >>> > Takashi
>> >>> >
>> >>> >> I'm running Debian Testing, stable kernel 4.13.12,
>> >>> >> alsa-utils 1.1.3-1. My ~/.asoundrc is:
>> >>> >>
>> >>> >> ~$ cat .asoundrc
>> >>> >> pcm.!default "hdmi:NVidia,1"
>> >>> >> ~$
>> >>> >>
>> >>> >> I am not setting anything on my kernel load line:
>> >>> >>
>> >>> >> echo 'Loading Linux 4.13.12-amd ...'
>> >>> >> linux /vmlinuz-4.13.12-amd
>> >>> >> root=UUID=6df5733d-b089-450c-9ec6-661dd013c7c0 ro
>> >>> >> echo 'Loading initial ramdisk ...'
>> >>> >> initrd /initrd.img-4.13.12-amd
>> >>> >>
>> >>> >> The driver being used is snd-hda-intel with an Nvidia GT520 video
>> >>> >> card. And lastly I do not have Pulse or a desktop environment. This is
>> >>> >> a minimal HTPC setup that runs only an xserver to provide video
>> >>> >> output, with audio/video being sent to my surround receiver via HDMI.
>> >>> >>
>> >>> >> The first thing I noticed was mpv-player was downmixing 5.1 to 3.1 and
>> >>> >> giving the following log message:
>> >>> >>
>> >>> >> [ao/alsa] trying to set ALSA channel map: FL FR FC LFE RL RR
>> >>> >> [ao/alsa] channel map reported by ALSA: FL FR FC LFE UNKNOWN UNKNOWN
>> >>> >> [ao/alsa] which we understand as: fl-fr-fc-lfe-na-na
>> >>> >> [ao/alsa] using the ALSA channel map.
>> >>> >> [ao/alsa] hw pausing supported: yes
>> >>> >> [ao/alsa] buffersize: 2720 samples
>> >>> >> [ao/alsa] period size: 160 samples
>> >>> >> [ao/alsa] device buffer: 2720 samples.
>> >>> >> [ao/alsa] using soft-buffer of 8820 samples.
>> >>> >> [cplayer] AO: [alsa] 44100Hz fl-fr-fc-lfe-na-na (3.1) 6ch s32
>> >>> >> [cplayer] AO: Description: ALSA audio output
>> >>> >> [af] Adding filter lavrresample
>> >>> >> [lavrresample] Remix: 5.1 -> 3.1
>> >>> >> [af] Audio filter chain:
>> >>> >> [af] [in] 44100Hz 5.1 6ch floatp
>> >>> >> [af] [lavrresample] 44100Hz fl-fr-fc-lfe-na-na (3.1) 6ch s32 [a]
>> >>> >> [af] [out] 44100Hz fl-fr-fc-lfe-na-na (3.1) 6ch s32
>> >>> >> [af] [ao] 44100Hz fl-fr-fc-lfe-na-na (3.1) 6ch s32
>> >>> >>
>> >>> >> That makes it look like Rear Left/Right channels are absent. I think
>> >>> >> ran speaker-test. 4 and 5 show as "Unknown" but correctly audibly
>> >>> >> announced as "front center" and "subwoofer" respectively:
>> >>> >>
>> >>> >> ~$ speaker-test -c 6 -t wav
>> >>> >>
>> >>> >> speaker-test 1.1.3
>> >>> >>
>> >>> >> Playback device is default
>> >>> >> Stream parameters are 48000Hz, S16_LE, 6 channels
>> >>> >> WAV file(s)
>> >>> >> Rate set to 48000Hz (requested 48000Hz)
>> >>> >> Buffer size range from 64 to 5440
>> >>> >> Period size range from 32 to 2720
>> >>> >> Using max buffer size 5440
>> >>> >> Periods = 4
>> >>> >> was set period_size = 1088
>> >>> >> was set buffer_size = 5440
>> >>> >> 0 - Front Left
>> >>> >> 1 - Front Right
>> >>> >> 3 - Rear Right
>> >>> >> 2 - Rear Left
>> >>> >> 4 - Unknown
>> >>> >> 5 - Unknown
>> >>> >>
>> >>> >> Additional information that may be of use:
>> >>> >>
>> >>> >> ~$ aplay -l
>> >>> >> **** List of PLAYBACK Hardware Devices ****
>> >>> >> card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
>> >>> >> Subdevices: 1/1
>> >>> >> Subdevice #0: subdevice #0
>> >>> >> card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
>> >>> >> Subdevices: 0/1
>> >>> >> Subdevice #0: subdevice #0
>> >>> >>
>> >>> >> ~$ cat /proc/asound/card1/eld#0.1
>> >>> >> monitor_present 1
>> >>> >> eld_valid 1
>> >>> >> monitor_name SONY AVAMP
>> >>> >>
>> >>> >> connection_type HDMI
>> >>> >> eld_version [0x2] CEA-861D or below
>> >>> >> edid_version [0x3] CEA-861-B, C or D
>> >>> >> manufacture_id 0xd94d
>> >>> >> product_id 0xf02
>> >>> >> port_id 0x200
>> >>> >> support_hdcp 0
>> >>> >> support_ai 0
>> >>> >> audio_sync_delay 0
>> >>> >> speakers [0x5f] FL/FR LFE FC RL/RR RC RLC/RRC
>> >>> >> sad_count 12
>> >>> >> sad0_coding_type [0xc] MLP (Dolby TrueHD)
>> >>> >> sad0_channels 2
>> >>> >> sad0_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
>> >>> >> sad1_coding_type [0xc] MLP (Dolby TrueHD)
>> >>> >> sad1_channels 6
>> >>> >> sad1_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
>> >>> >> sad2_coding_type [0xc] MLP (Dolby TrueHD)
>> >>> >> sad2_channels 8
>> >>> >> sad2_rates [0x6c0] 44100 48000 88200 96000
>> >>> >> sad3_coding_type [0xb] DTS-HD
>> >>> >> sad3_channels 2
>> >>> >> sad3_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
>> >>> >> sad4_coding_type [0xb] DTS-HD
>> >>> >> sad4_channels 6
>> >>> >> sad4_rates [0x1ec0] 44100 48000 88200 96000 176400 192000
>> >>> >> sad5_coding_type [0xb] DTS-HD
>> >>> >> sad5_channels 8
>> >>> >> sad5_rates [0x6c0] 44100 48000 88200 96000
>> >>> >> sad6_coding_type [0x1] LPCM
>> >>> >> sad6_channels 2
>> >>> >> sad6_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
>> >>> >> sad6_bits [0xe0000] 16 20 24
>> >>> >> sad7_coding_type [0x1] LPCM
>> >>> >> sad7_channels 6
>> >>> >> sad7_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
>> >>> >> sad7_bits [0xe0000] 16 20 24
>> >>> >> sad8_coding_type [0x1] LPCM
>> >>> >> sad8_channels 8
>> >>> >> sad8_rates [0x1ee0] 32000 44100 48000 88200 96000 176400 192000
>> >>> >> sad8_bits [0xe0000] 16 20 24
>> >>> >> sad9_coding_type [0x2] AC-3
>> >>> >> sad9_channels 6
>> >>> >> sad9_rates [0xe0] 32000 44100 48000
>> >>> >> sad9_max_bitrate 680000
>> >>> >> sad10_coding_type [0x7] DTS
>> >>> >> sad10_channels 6
>> >>> >> sad10_rates [0x6e0] 32000 44100 48000 88200 96000
>> >>> >> sad10_max_bitrate 1536000
>> >>> >> sad11_coding_type [0xa] E-AC-3/DD+ (Dolby Digital Plus)
>> >>> >> sad11_channels 8
>> >>> >> sad11_rates [0xc0] 44100 48000
>> >>> >>
>> >>> >> 02:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce
>> >>> >> GT 520] (rev a1) (prog-if 00 [VGA controller])
>> >>> >> Subsystem: eVga.com. Corp. GF119 [GeForce GT 520]
>> >>> >> Flags: bus master, fast devsel, latency 0, IRQ 25
>> >>> >> Memory at fd000000 (32-bit, non-prefetchable) [size=16M]
>> >>> >> Memory at f0000000 (64-bit, prefetchable) [size=128M]
>> >>> >> Memory at fa000000 (64-bit, prefetchable) [size=32M]
>> >>> >> I/O ports at ec00 [size=128]
>> >>> >> [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
>> >>> >> Capabilities: <access denied>
>> >>> >> Kernel driver in use: nvidia
>> >>> >> Kernel modules: nvidia
>> >>> >>
>> >>> >> 02:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1)
>> >>> >> Subsystem: eVga.com. Corp. GF119 HDMI Audio Controller
>> >>> >> Flags: bus master, fast devsel, latency 0, IRQ 17
>> >>> >> Memory at fea7c000 (32-bit, non-prefetchable) [size=16K]
>> >>> >> Capabilities: <access denied>
>> >>> >> Kernel driver in use: snd_hda_intel
>> >>> >> Kernel modules: snd_hda_intel
>> >>> >> _______________________________________________
>> >>> >> Alsa-devel mailing list
>> >>> >> Alsa-devel at alsa-project.org
>> >>> >> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
>> >>> >>
>> >>>
>>
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