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Old 01-11-2017, 04:18 AM   #1
ueghio
LQ Newbie
 
Registered: Dec 2010
Posts: 13

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MPD - Alsa can't detect external usb audio card


Hello I hope you can help me to solve my problem.
I use Arch linux on an arm device, a Pogoplug E02.
I have a problem with a behringer sound card. Alsa can't unfortunately detect it.
Everything worked well before the last pacman update. Installed Music player daemon and I can connect to the server through mpd clients without ptoblems but can't start playing music.
When I try to detect sound cards this is the output:
Code:
[marco@alarm ~]$ aplay -l
aplay: device_list:270: no soundcards found...
Code:
[marco@alarm ~]$ alsamixer
cannot open mixer: No such file or directory
Code:
[marco@alarm ~]$ lsusb
Bus 001 Device 006: ID 08bb:2902 Texas Instruments PCM2902 Audio Codec
Code:
[marco@alarm ~]$ sudo systemctl status mpd
* mpd.service - Music Player Daemon
   Loaded: loaded (/usr/lib/systemd/system/mpd.service; disabled; vendor preset: disabled)
   Active: active (running) since Mon 2017-01-09 14:32:14 UTC; 19s ago
 Main PID: 306 (mpd)
   CGroup: /system.slice/mpd.service
           `-306 /usr/bin/mpd --no-daemon

Jan 09 14:32:26 alarm libsmbclient[306]: alsa_output: Failed to open "MPD ALSA" [alsa]: Failed to open ALSA device "hw:0,0": No such file or directory
Jan 09 14:32:26 alarm libsmbclient[306]: output: Failed to open audio output
This is the content of the original working version of /etc/mpd.conf
Code:
 See: /usr/share/doc/mpd/mpdconf.example

music_directory "/mnt/hdd/music"
pid_file "/run/mpd/mpd.pid"
db_file "/var/lib/mpd/mpd.db"
state_file "/var/lib/mpd/mpdstate"
playlist_directory "/var/lib/mpd/playlists"
user                  "mpd"
audio_output {
        type            "alsa"
        name            "MPD ALSA"
        device          "hw:0,0"
        mixer_control   "PCM"
}
This is dmesg
Code:
[marco@alarm ~]$ dmesg
[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Initializing cgroup subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Initializing cgroup subsys cpuacct
[    0.000000] Linux version 4.4.40-1-ARCH (builduser@leming) (gcc version 6.2.1 20160830 (GCC) ) #1 PREEMPT Sat Jan 7 05:38:35 MST 2017
[    0.000000] CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=0005397f
[    0.000000] CPU: VIVT data cache, VIVT instruction cache
[    0.000000] Machine: Pogoplug E02
[    0.000000] Memory policy: Data cache writeback
[    0.000000] On node 0 totalpages: 65536
[    0.000000] free_area_init_node: node 0, pgdat c0918c14, node_mem_map cfdba000
[    0.000000]   Normal zone: 576 pages used for memmap
[    0.000000]   Normal zone: 0 pages reserved
[    0.000000]   Normal zone: 65536 pages, LIFO batch:15
[    0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768
[    0.000000] pcpu-alloc: [0] 0
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 64960
[    0.000000] Kernel command line: console=ttyS0,115200 root=/dev/sdb1 rw rootwait mtdparts=orion_nand:1M(u-boot),-(rootfs)
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] Memory: 249516K/262144K available (6601K kernel code, 547K rwdata, 1876K rodata, 296K init, 725K bss, 12628K reserved, 0K cma-reserved)
[    0.000000] Virtual kernel memory layout:
                   vector  : 0xffff0000 - 0xffff1000   (   4 kB)
                   fixmap  : 0xffc00000 - 0xfff00000   (3072 kB)
                   vmalloc : 0xd0800000 - 0xff800000   ( 752 MB)
                   lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
                   modules : 0xbf000000 - 0xc0000000   (  16 MB)
                     .text : 0xc0008000 - 0xc084f9dc   (8479 kB)
                     .init : 0xc0850000 - 0xc089a000   ( 296 kB)
                     .data : 0xc089a000 - 0xc0922e4c   ( 548 kB)
                      .bss : 0xc0922e4c - 0xc09d8418   ( 726 kB)
[    0.000000] SLUB: HWalign=32, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
[    0.000000] Preemptible hierarchical RCU implementation.
[    0.000000]  Build-time adjustment of leaf fanout to 32.
[    0.000000] NR_IRQS:114
[    0.000012] sched_clock: 32 bits at 200MHz, resolution 5ns, wraps every 10737418237ns
[   11.562417] clocksource: orion_clocksource: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 9556302233 ns
[   11.562606] Console: colour dummy device 80x30
[   11.562636] Calibrating delay loop... 1191.11 BogoMIPS (lpj=5955584)
[   11.652506] pid_max: default: 32768 minimum: 301
[   11.652604] Security Framework initialized
[   11.652681] Mount-cache hash table entries: 1024 (order: 0, 4096 bytes)
[   11.652700] Mountpoint-cache hash table entries: 1024 (order: 0, 4096 bytes)
[   11.653437] Initializing cgroup subsys io
[   11.653471] Initializing cgroup subsys memory
[   11.653525] Initializing cgroup subsys devices
[   11.653554] Initializing cgroup subsys freezer
[   11.653577] Initializing cgroup subsys net_cls
[   11.653600] Initializing cgroup subsys perf_event
[   11.653625] Initializing cgroup subsys net_prio
[   11.653707] CPU: Testing write buffer coherency: ok
[   11.654167] Setting up static identity map for 0x81e0 - 0x8238
[   11.656103] devtmpfs: initialized
[   11.658503] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns
[   11.658948] pinctrl core: initialized pinctrl subsystem
[   11.659724] NET: Registered protocol family 16
[   11.660222] DMA: preallocated 256 KiB pool for atomic coherent allocations
[   11.682507] cpuidle: using governor ladder
[   11.712506] cpuidle: using governor menu
[   11.712677] Kirkwood: MV88F6281-A0, TCLK=200000000.
[   11.712703] Feroceon L2: Enabling L2
[   11.712740] Feroceon L2: Cache support initialised.
[   11.713489] initial MPP regs: 01111111 11113322 00001111 00100000 00000000 00000000 00000000
[   11.713517]   final MPP regs: 01111111 11113322 00001111 00000000 00000000 00000000 00000000
[   11.754006] vgaarb: loaded
[   11.754339] SCSI subsystem initialized
[   11.754528] libata version 3.00 loaded.
[   11.754831] usbcore: registered new interface driver usbfs
[   11.754908] usbcore: registered new interface driver hub
[   11.754968] usbcore: registered new device driver usb
[   11.755140] pps_core: LinuxPPS API ver. 1 registered
[   11.755150] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti <giometti@linux.it>
[   11.755184] PTP clock support registered
[   11.756234] clocksource: Switched to clocksource orion_clocksource
[   11.794564] FS-Cache: Loaded
[   11.807798] NET: Registered protocol family 2
[   11.808618] TCP established hash table entries: 2048 (order: 1, 8192 bytes)
[   11.808658] TCP bind hash table entries: 2048 (order: 1, 8192 bytes)
[   11.808689] TCP: Hash tables configured (established 2048 bind 2048)
[   11.808763] UDP hash table entries: 256 (order: 0, 4096 bytes)
[   11.808786] UDP-Lite hash table entries: 256 (order: 0, 4096 bytes)
[   11.808977] NET: Registered protocol family 1
[   11.809309] RPC: Registered named UNIX socket transport module.
[   11.809322] RPC: Registered udp transport module.
[   11.809329] RPC: Registered tcp transport module.
[   11.809335] RPC: Registered tcp NFSv4.1 backchannel transport module.
[   11.809356] PCI: CLS 0 bytes, default 32
[   11.811366] futex hash table entries: 256 (order: -1, 3072 bytes)
[   11.824132] VFS: Disk quotas dquot_6.6.0
[   11.824399] VFS: Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[   11.826531] FS-Cache: Netfs 'nfs' registered for caching
[   11.827646] NFS: Registering the id_resolver key type
[   11.827703] Key type id_resolver registered
[   11.827712] Key type id_legacy registered
[   11.827799] jffs2: version 2.2. (NAND) \xffffffc2\xffffffa9 2001-2006 Red Hat, Inc.
[   11.829117] fuse init (API version 7.23)
[   11.831347] aufs 4.4-20161219
[   11.836772] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 250)
[   11.836800] io scheduler noop registered
[   11.836816] io scheduler deadline registered
[   11.837091] io scheduler cfq registered
[   11.837360] io scheduler bfq registered (default)
[   11.837370] BFQ I/O-scheduler: v7r11
[   11.837562] mv_xor mv_xor.0: Marvell shared XOR driver
[   11.877497] mv_xor mv_xor.0: Marvell XOR (Registers Mode): ( xor cpy )
[   11.877748] mv_xor mv_xor.1: Marvell shared XOR driver
[   11.917532] mv_xor mv_xor.1: Marvell XOR (Registers Mode): ( xor cpy )
[   11.923198] Serial: 8250/16550 driver, 2 ports, IRQ sharing disabled
[   11.924319] console [ttyS0] disabled
[   11.944432] serial8250.0: ttyS0 at MMIO 0xf1012000 (irq = 33, base_baud = 12500000) is a 16550A
[   12.497282] console [ttyS0] enabled
[   12.516717] brd: module loaded
[   12.527589] loop: module loaded
[   12.531552] nand: device found, Manufacturer ID: 0xad, Chip ID: 0xf1
[   12.538042] nand: Hynix NAND 128MiB 3,3V 8-bit
[   12.542506] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[   12.550139] Scanning device for bad blocks
[   12.631866] 2 cmdlinepart partitions found on MTD device orion_nand
[   12.638180] Creating 2 MTD partitions on "orion_nand":
[   12.643348] 0x000000000000-0x000000100000 : "u-boot"
[   12.648831] 0x000000100000-0x000008000000 : "rootfs"
[   12.661330] libphy: orion_mdio_bus: probed
[   12.665551] mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
[   13.747246] mv643xx_eth_port mv643xx_eth_port.0 eth0: port 0 with MAC address 00:25:31:00:66:7e
[   13.756130] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
[   13.762721] ehci-pci: EHCI PCI platform driver
[   13.767273] ehci-orion: EHCI orion driver
[   13.771375] orion-ehci orion-ehci.0: EHCI Host Controller
[   13.776857] orion-ehci orion-ehci.0: new USB bus registered, assigned bus number 1
[   13.784608] orion-ehci orion-ehci.0: irq 19, io mem 0xf1050000
[   13.806265] orion-ehci orion-ehci.0: USB 2.0 started, EHCI 1.00
[   13.813188] hub 1-0:1.0: USB hub found
[   13.817052] hub 1-0:1.0: 1 port detected
[   13.821698] usbcore: registered new interface driver uas
[   13.827233] usbcore: registered new interface driver usb-storage
[   13.833320] usbcore: registered new interface driver ums-alauda
[   13.839369] usbcore: registered new interface driver ums-cypress
[   13.845459] usbcore: registered new interface driver ums-datafab
[   13.851567] usbcore: registered new interface driver ums_eneub6250
[   13.857851] usbcore: registered new interface driver ums-freecom
[   13.863934] usbcore: registered new interface driver ums-isd200
[   13.869955] usbcore: registered new interface driver ums-jumpshot
[   13.876125] usbcore: registered new interface driver ums-karma
[   13.882059] usbcore: registered new interface driver ums-onetouch
[   13.888288] usbcore: registered new interface driver ums-realtek
[   13.894376] usbcore: registered new interface driver ums-sddr09
[   13.900398] usbcore: registered new interface driver ums-sddr55
[   13.906422] usbcore: registered new interface driver ums-usbat
[   13.912739] mousedev: PS/2 mouse device common for all mice
[   14.136266] usb 1-1: new high-speed USB device number 2 using orion-ehci
[   14.288872] hub 1-1:1.0: USB hub found
[   14.292995] hub 1-1:1.0: 4 ports detected
[   14.576260] usb 1-1.1: new full-speed USB device number 3 using orion-ehci
[   14.776260] usb 1-1.2: new high-speed USB device number 4 using orion-ehci
[   14.926256] rtc-mv rtc-mv: internal RTC not ticking
[   14.931312] i2c /dev entries driver
[   14.935427] sdhci: Secure Digital Host Controller Interface driver
[   14.941700] sdhci: Copyright(c) Pierre Ossman
[   14.946202] sdhci-pltfm: SDHCI platform and OF driver helper
[   14.952662] ledtrig-cpu: registered to indicate activity on CPUs
[   14.958945] usbcore: registered new interface driver r8712u
[   14.964900] gre: GRE over IPv4 demultiplexor driver
[   14.970397] NET: Registered protocol family 17
[   14.975165] usb-storage 1-1.2:1.0: USB Mass Storage device detected
[   14.981645] Key type dns_resolver registered
[   14.987155] registered taskstats version 1
[   14.992259] scsi host0: usb-storage 1-1.2:1.0
[   14.998737] Key type encrypted registered
[   15.003346] console [netcon0] enabled
[   15.007111] netconsole: network logging started
[   15.011758] hctosys: unable to open rtc device (rtc0)
[   15.018251] Waiting for root device /dev/sdb1...
[   15.076270] usb 1-1.3: new high-speed USB device number 5 using orion-ehci
[   15.188162] usb-storage 1-1.3:1.0: USB Mass Storage device detected
[   15.194751] scsi host1: usb-storage 1-1.3:1.0
[   15.997333] scsi 0:0:0:0: Direct-Access     ASMT     2115             0    PQ: 0 ANSI: 6
[   16.006918] sd 0:0:0:0: [sda] 1953525168 512-byte logical blocks: (1.00 TB/932 GiB)
[   16.014817] sd 0:0:0:0: Attached scsi generic sg0 type 0
[   16.020657] sd 0:0:0:0: [sda] Write Protect is off
[   16.025491] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00
[   16.026497] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[   16.038967]  sda: sda1
[   16.044524] sd 0:0:0:0: [sda] Attached SCSI disk
[   16.197577] scsi 1:0:0:0: Direct-Access     SanDisk  Cruzer Fit       1.27 PQ: 0 ANSI: 6
[   16.207106] sd 1:0:0:0: Attached scsi generic sg1 type 0
[   16.212667] sd 1:0:0:0: [sdb] 30529536 512-byte logical blocks: (15.6 GB/14.6 GiB)
[   16.222152] sd 1:0:0:0: [sdb] Write Protect is off
[   16.227067] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[   16.227775] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[   16.242839]  sdb: sdb1
[   16.248524] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[   16.337664] EXT4-fs (sdb1): couldn't mount as ext3 due to feature incompatibilities
[   16.346782] EXT4-fs (sdb1): couldn't mount as ext2 due to feature incompatibilities
[   16.363948] EXT4-fs (sdb1): mounted filesystem with ordered data mode. Opts: (null)
[   16.371805] VFS: Mounted root (ext4 filesystem) on device 8:17.
[   16.381437] devtmpfs: mounted
[   16.385372] Freeing unused kernel memory: 296K (c0850000 - c089a000)
[   16.843126] systemd[1]: System time before build time, advancing clock.
[   16.902392] random: systemd: uninitialized urandom read (16 bytes read, 46 bits of entropy available)
[   16.929717] random: systemd: uninitialized urandom read (16 bytes read, 46 bits of entropy available)
[   16.943650] systemd[1]: systemd 232 running in system mode. (+PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN)
[   16.962215] systemd[1]: Detected architecture arm.
[   16.997624] systemd[1]: Set hostname to <alarm>.
[   17.145265] random: systemd-cryptse: uninitialized urandom read (16 bytes read, 51 bits of entropy available)
[   17.179937] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 51 bits of entropy available)
[   17.200683] random: systemd-gpt-aut: uninitialized urandom read (16 bytes read, 53 bits of entropy available)
[   17.357867] random: systemd: uninitialized urandom read (16 bytes read, 57 bits of entropy available)
[   17.367525] random: systemd: uninitialized urandom read (16 bytes read, 57 bits of entropy available)
[   17.377547] random: systemd: uninitialized urandom read (16 bytes read, 57 bits of entropy available)
[   17.387855] random: systemd: uninitialized urandom read (16 bytes read, 57 bits of entropy available)
[   17.427073] random: systemd: uninitialized urandom read (16 bytes read, 60 bits of entropy available)
[   17.441885] systemd[1]: [/usr/lib/systemd/system/mpd.service:23] Unknown lvalue 'RestrictNamespaces' in section 'Service'
[   17.741852] systemd[1]: Listening on LVM2 metadata daemon socket.
[   17.773016] systemd[1]: Listening on Process Core Dump Socket.
[   17.796979] systemd[1]: Started Dispatch Password Requests to Console Directory Watch.
[   17.826784] systemd[1]: Listening on Device-mapper event daemon FIFOs.
[   17.856785] systemd[1]: Started Forward Password Requests to Wall Directory Watch.
[   17.886547] systemd[1]: Reached target Paths.
[   17.906542] systemd[1]: Reached target Encrypted Volumes.
[   17.936766] systemd[1]: Listening on udev Control Socket.
[   17.966945] systemd[1]: Listening on Network Service Netlink Socket.
[   17.996788] systemd[1]: Listening on Journal Socket (/dev/log).
[   18.029426] systemd[1]: Created slice System Slice.
[   18.060435] systemd[1]: Mounting POSIX Message Queue File System...
[   18.098438] systemd[1]: Created slice system-serial\x2dgetty.slice.
[   18.130777] systemd[1]: Mounting Debug File System...
[   18.177798] systemd[1]: Created slice system-getty.slice.
[   18.206886] systemd[1]: Listening on /dev/initctl Compatibility Named Pipe.
[   18.236589] systemd[1]: Reached target Remote File Systems.
[   18.267449] systemd[1]: Set up automount Arbitrary Executable File Formats File System Automount Point.
[   18.296785] systemd[1]: Listening on udev Kernel Socket.
[   18.342160] systemd[1]: Listening on Journal Socket.
[   18.370509] systemd[1]: Starting Journal Service...
[   18.391024] systemd[1]: Starting Create list of required static device nodes for the current kernel...
[   18.483529] systemd[1]: Mounting FUSE Control File System...
[   18.535095] systemd[1]: Starting Apply Kernel Variables...
[   18.544216] systemd-journald[124]: File /var/log/journal/0ca20ca3aa0a4f1e9be99a9e593f67a6/system.journal corrupted or uncleanly shut down, renaming and replacing.
[   18.580650] systemd[1]: Starting Remount Root and Kernel File Systems...
[   18.656692] systemd[1]: Reached target Swap.
[   18.712388] systemd[1]: Mounting Temporary Directory...
[   18.767672] systemd[1]: Created slice User and Session Slice.
[   18.796825] systemd[1]: Reached target Slices.
[   18.842764] systemd[1]: Mounted FUSE Control File System.
[   18.866719] systemd[1]: Mounted Debug File System.
[   18.886691] systemd[1]: Mounted POSIX Message Queue File System.
[   18.906670] systemd[1]: Mounted Temporary Directory.
[   18.929136] systemd[1]: Started Create list of required static device nodes for the current kernel.
[   18.978672] systemd[1]: Started Apply Kernel Variables.
[   18.998268] systemd[1]: Started Remount Root and Kernel File Systems.
[   19.041661] systemd[1]: Starting udev Coldplug all Devices...
[   19.090632] systemd[1]: Starting Load/Save Random Seed...
[   19.131293] systemd[1]: Starting Create Static Device Nodes in /dev...
[   19.222209] systemd[1]: Started Journal Service.
[   19.456881] systemd-journald[124]: Received request to flush runtime journal from PID 1
[   20.141686] random: nonblocking pool is initialized
[   21.332787] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)

    [   32.155498] mv643xx_eth_port mv643xx_eth_port.0 eth0: link up, 1000 Mb/s, full duplex, flow control disabled
The card works flawlessly if connected to my laptop.
Do you have any suggestion? Thank you in advance for your help.
Kind regards.
Marco.

Last edited by ueghio; 01-11-2017 at 04:20 AM.
 
Old 01-11-2017, 10:37 AM   #2
DavidMcCann
LQ Veteran
 
Registered: Jul 2006
Location: London
Distribution: PCLinuxOS, Debian
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Quote:
Originally Posted by ueghio View Post
Everything worked well before the last pacman update.
Code:
[marco@alarm ~]$ alsamixer
cannot open mixer: No such file or directory
When you say that everything worked, did that include sound? If so, there's the problem!

Certainly something is wrong if it can't find alsamixer, as that should be installed by default. That may be just a question of permissions, though. Make sure that you are a member of the audio group
http://wiki.archlinux.org/index.php/...d_Architecture
 
1 members found this post helpful.
Old 01-12-2017, 10:53 AM   #3
ueghio
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Registered: Dec 2010
Posts: 13

Original Poster
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Quote:
Originally Posted by DavidMcCann View Post
When you say that everything worked, did that include sound? If so, there's the problem!

Certainly something is wrong if it can't find alsamixer, as that should be installed by default. That may be just a question of permissions, though. Make sure that you are a member of the audio group
http://wiki.archlinux.org/index.php/...d_Architecture
Finally I found a solution. I deleted the file /etc/asound.conf and now mpd can play mp3s without errors.
Unfortunately alsamixer and aplay continue to give me errors but it doesn't seem necessary for sound to work. Thank you very much for your support. Kind regards. Marco
 
Old 01-12-2017, 12:11 PM   #4
273
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I have to admit I don't know archg so this is just based upon a little experience with odd devices.
You may wish to try to install ALSAmixer, just so you can use it.
The device may now be set to 0,1 instead because of some change to assignments?
 
  


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