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@xxxxxxxxxxxxxxxx > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
