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HifiberryOS volume control

Luyckx Bart

November 27, 2020 13:32

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I don't understand the volume control slider of HifiberryOS.  

If you slide it to 50%  then the volume bar goes from 50 to 100.  

If you slide it to 40% then the volume bar goes from 40 to 100 and is more sensitive.

The problem Im facing is that the output of the HAT board (2Volt) is to high for the input of my amplifier (110mV).  Making it to sensitive to control volume on the amplifier (I can go max to 9 Oclock).  

Why Not limiting the output signal from the setting aswell.  (there is a setting for the input signal)

This way the signal is less sensitive for the amplifier volume control.

It make more sense for me to have the 0 to 50% range then the 50% to 100%.  If the max setting is 50% (=1V)  the signal is better usable for the amplifier input and remote.  

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44 comments

• 0
  
  steamfan November 27, 2020 13:49

  What board are you using?

   

• 0
  
  Luyckx Bart November 27, 2020 14:12

  DAC2HD but all dac boards have 2v output

• 0
  
  HiFiBerry team November 27, 2020 15:04

  50% is not 1V, but a lot less, but that's just a comment. 
  
  However, you can limited the maximum output using the "Volume limit" in Channels an limits. This will affect the maximum output volume.

• 0
  
  Luyckx Bart November 27, 2020 15:51

  I don't understand.  I have these settings.   

  Volume limit -6 db doesn't have any affect as it's limit of sources.   40% setting is effect on minimum value of the slider but no affect on the max value

  

• 0
  
  HiFiBerry team November 27, 2020 15:52

  Looks like you did not press STORE ADJUSTMENTS

• 0
  
  Luyckx Bart November 27, 2020 16:05

  I'm sure I did press STORE ADJUSMENTS. 

  Anyway I did it now again, but system doesn't start anymore.  I can not turn on MPD.  I click it, it said starting but box never got selected/activated.   I can not see my songs and albums anymore

• 0
  
  HiFiBerry team November 27, 2020 17:44

  Check the state of mpd from command line:
  
  systemctl status mpd

• 0
  
  Luyckx Bart November 28, 2020 10:48

  [[0;1;31m●[[0m mpd.service - mpd

       Loaded: loaded (/usr/lib/systemd/system/mpd.service; enabled; vendor preset

  : enabled)

       Active: [[0;1;31mfailed[[0m (Result: exit-code) since Sat 2020-11-28 11:43:

  57 CET; 1min 51s ago

  TriggeredBy: [[0;1;31m●[[0m mpd.socket

      Process: 817 ExecStartPre=/opt/hifiberry/bin/bootmsg Mounting SMB shares (co

  de=exited, status=0/SUCCESS)

      Process: 823 ExecStartPre=/opt/hifiberry/bin/mount-smb.sh (code=exited, stat

  us=0/SUCCESS)

      Process: 830 ExecStartPre=/opt/hifiberry/bin/bootmsg Mounting USB drives (co

  de=exited, status=0/SUCCESS)

      Process: 839 ExecStartPre=/opt/hifiberry/bin/mount-all.sh (code=exited, stat

  us=0/SUCCESS)

      Process: 864 ExecStartPre=/opt/hifiberry/bin/bootmsg Starting music player d

  aemon (code=exited, status=0/SUCCESS)

      Process: 868 ExecStartPre=/opt/hifiberry/bin/pause-state-file (code=exited,

  status=0/SUCCESS)

      Process: 869 ExecStart=/bin/mpd --no-daemon [[0;1;31m(code=exited, status=1/

  FAILURE)[[0m

     Main PID: 869 (code=exited, status=1/FAILURE)

   

  Nov 28 11:43:57 hifiberry mount-smb.sh[849]: Looking up images ...

  Nov 28 11:43:57 hifiberry mpd[869]: [[0;1;31m[[0;1;39m[[0;1;31mexception: bind t

  o '0.0.0.0:6600' failed (continuing anyway, because binding to '[::]:6600' succe

  eded): Failed to bind socket: Address already in use[[0m

  Nov 28 11:43:57 hifiberry mpd[869]: [[0;1;31m[[0;1;39m[[0;1;31mexception: Failed

   to access /library/playlists: No such file or directory[[0m

  Nov 28 11:43:57 hifiberry mpd[869]: [[0;1;31m[[0;1;39m[[0;1;31mexception: Failed

   to access /library/music: No such file or directory[[0m

  Nov 28 11:43:57 hifiberry mpd[869]: [[0;1;31m[[0;1;39m[[0;1;31mexception: Failed

   to open '/library/mpd': No such file or directory[[0m

  standard input

   

• 0
  
  HiFiBerry team November 29, 2020 08:36

  Ok, this looks like something completely different. Seems that your library is missing. 
  
  What's the output of 
  
  ls / | grep library
  ls -l /data

   

• 0
  
  Luyckx Bart November 29, 2020 10:20

   

  # df -h

  Filesystem      Size  Used Avail Use% Mounted on

  /dev/root       1.4G  641M  709M  48% /

  devtmpfs        829M     0  829M   0% /dev

  tmpfs           958M     0  958M   0% /dev/shm

  tmpfs           958M  9.1M  949M   1% /run

  tmpfs           958M     0  958M   0% /sys/fs/cgroup

  tmpfs           958M   16K  958M   1% /tmp

  /dev/mmcblk0p1   32M  7.8M   25M  25% /boot

  /dev/sda1       299G  152G  147G  51% /mnt/86588658-01

  # ls / | grep library

  library

  library.bak

  # ls -l /data

  total 0

  #

   

• 0
  
  HiFiBerry team November 29, 2020 10:28

  Looks like your SD card isn't mounted correctly. Either the file system is corrupted or something else is wrong. Try a reboot first.

• 0
  
  Luyckx Bart November 29, 2020 10:33

  I rebooted it serveral times already.  Still the same.   I did a new installation...still the same...

• 1
  
  HiFiBerry team November 29, 2020 11:31

  What size is your SD card?

• 0
  
  Luyckx Bart November 29, 2020 11:45

  tried 2 cards, 16 Gb en 250 Gb.  This shouldnt be of any concern doesn't it?

• 0
  
  HiFiBerry team November 29, 2020 16:41

  If it's at least 4GB it should be fine. You are us9ing the 20201101 release?
  
  What's the output of
  

  /opt/hifiberry/bin/mount-data.sh

• 0
  
  Luyckx Bart November 30, 2020 09:10

  Installed the latest version.  Still same result. 

  No output on /opt/hifiberry/bin/mount-data.sh

   

  # df -h
  Filesystem Size Used Avail Use% Mounted on
  /dev/root 1.4G 642M 697M 48% /
  devtmpfs 793M 0 793M 0% /dev
  tmpfs 922M 0 922M 0% /dev/shm
  tmpfs 369M 7.9M 361M 3% /run
  tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup
  tmpfs 922M 16K 922M 1% /tmp
  /dev/mmcblk0p1 32M 16M 16M 50% /boot
  /dev/sda1 299G 152G 147G 51% /mnt/86588658-01
  # ls -l /data
  total 4
  drwxr-xr-x 5 root root 3488 Nov 21 15:42 library
  # ls / | grep library
  library
  library.bak
  # /opt/hifiberry/bin/mount-data.sh
  #

• 0
  
  HiFiBerry team November 30, 2020 11:35

  There's definitely something wrong with the formating and/or partitioning of your SD card. 

  Let's see if we can find out what went wrong:
  
  

  echo "p" | fdisk /dev/mmcblk0
  

  fsck -p -y /dev/mmcblk0p4
  

  cat /etc/fstab | grep /data
• 0
  
  Luyckx Bart November 30, 2020 12:59

  Strange that both SDcards work for a long time and now seem to be wrong. 

   

  Welcome to fdisk (util-linux 2.35.2).

  Changes will remain in memory only, until you decide to write them.

  Be careful before using the write command.

   

   

  Command (m for help): Disk /dev/mmcblk0: 183.35 GiB, 196865949696 bytes, 384503808 sectors

  Units: sectors of 1 * 512 = 512 bytes

  Sector size (logical/physical): 512 bytes / 512 bytes

  I/O size (minimum/optimal): 512 bytes / 512 bytes

  Disklabel type: dos

  Disk identifier: 0x863f48c7

   

  Device         Boot   Start       End   Sectors   Size Id Type

  /dev/mmcblk0p1 *          1     65536     65536    32M  c W95 FAT32 (LBA)

  /dev/mmcblk0p2        65537   3065536   3000000   1.4G 83 Linux

  /dev/mmcblk0p3      3065537   6065536   3000000   1.4G 83 Linux

  /dev/mmcblk0p4      6066176 384503807 378437632 180.5G 83 Linux

   

  # fsck -p -y /dev/mmcblk0p4
  fsck from util-linux 2.35.2
  Info: Use default preen mode
  Info: Force to fix corruption
  Info: Mounted device!
  Error: Not available on mounted device!

   

  # cat /etc/fstab |grep /data
  /dev/mmcblk0p4 /data auto defaults,nofail 0 2

   

• 0
  
  HiFiBerry team November 30, 2020 13:01

  Ok, partitioning looks fine and according to these logs, the card should also be mounted already. Please check again
  
  df -h

• 0
  
  Luyckx Bart November 30, 2020 13:04

  Still can't start PMD.   And why sometimes its ok and other times not?

   

  # df -h
  Filesystem Size Used Avail Use% Mounted on
  /dev/root 1.4G 642M 697M 48% /
  devtmpfs 793M 0 793M 0% /dev
  tmpfs 922M 0 922M 0% /dev/shm
  tmpfs 369M 4.3M 365M 2% /run
  tmpfs 4.0M 0 4.0M 0% /sys/fs/cgroup
  tmpfs 922M 16K 922M 1% /tmp
  /dev/mmcblk0p1 32M 16M 16M 50% /boot
  /dev/sda1 299G 152G 147G 51% /mnt/86588658-01
  /dev/mmcblk0p4 181G 166G 16G 92% /data

• 0
  
  HiFiBerry team November 30, 2020 13:06

  This all looks fine. I can't say what's wrong with your setup. Try restarting it by hand
  
  systemctl restart mpd
  journalctl -u mpd

• 0
  
  Luyckx Bart November 30, 2020 13:25

  Seems to work now...Still I guess it's not stable...was not working for 3 days with many attempts 

• 0
  
  HiFiBerry team November 30, 2020 13:26

  For some reason your SD card wasn't mounted correctly. However, I simply can't say why.

• 0
  
  Luyckx Bart November 30, 2020 13:29

  I think I tried to reboot it 50 times these last 3 days,  Didnt work anytime.  Now it does.  Very very annoying.

• 0
  
  Luyckx Bart November 30, 2020 13:29

  And had problem with both SD card.  small and big

• 0
  
  Luyckx Bart November 30, 2020 13:36

  Still the initial question isn't solved.   Lowing the volume limit to -6Db or more doesnt have any effect on the max output of the DAC HAT.

• 0
  
  HiFiBerry team November 30, 2020 13:37

  Please post the content of your /etc/asound.conf file

• 0
  
  Luyckx Bart November 30, 2020 13:45

  I shut the system down.  When I restarted it, i can not active MPD from the menu.   

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

  Nov 30 14:32:53 hifiberry systemd[1]: Dependency failed for mpd.

  Nov 30 14:32:53 hifiberry systemd[1]: mpd.service: Job mpd.service/start failed

   

  ~

  standard input lines 25-45/45 (END)

  #

   

   

• 0
  
  Luyckx Bart November 30, 2020 13:46

  # /etc/asound.conf
  -bash: /etc/asound.conf: Permission denied

   

• 0
  
  HiFiBerry team November 30, 2020 13:47

  cat /etc/asound.conf