Hello, I've been scratching my head for the last couple of days due to crackling playback after boot.
I have a very simple unit file, that however does not seem to work. The service part: ------ ... [Service] Type=oneshot RemainAfterExit=yes # Setting up the HAMMERFALL soundcard. ExecStart=/usr/bin/amixer -D hw:HAMMERFALL sset 'IEC958 Input Connector' 'Coaxial' ExecStart=/usr/bin/amixer -D hw:HAMMERFALL sset 'Preferred Sync Source' 'IEC958 In' ExecStart=/usr/bin/amixer -D hw:HAMMERFALL sset 'ADAT1 Input Source' 'ADAT1' ExecStart=/usr/bin/amixer -D hw:HAMMERFALL sset 'Sync Mode' 'Master' ... ------ That, according to journalctl, does actually work: ------- Mai 18 13:37:26 gewitterhexe systemd[1]: Starting Set up the RME Hammerfall card... Mai 18 13:37:26 gewitterhexe amixer[601]: Simple mixer control 'IEC958 Input Connector',0 Mai 18 13:37:26 gewitterhexe amixer[601]: Capabilities: enum Mai 18 13:37:26 gewitterhexe amixer[601]: Items: 'ADAT1' 'Coaxial' 'Internal' Mai 18 13:37:26 gewitterhexe amixer[601]: Item0: 'Coaxial' Mai 18 13:37:26 gewitterhexe amixer[604]: Simple mixer control 'Preferred Sync Source',0 Mai 18 13:37:26 gewitterhexe amixer[604]: Capabilities: enum Mai 18 13:37:26 gewitterhexe amixer[604]: Items: 'IEC958 In' 'ADAT1 In' 'ADAT2 In' 'ADAT3 In' Mai 18 13:37:26 gewitterhexe amixer[604]: Item0: 'IEC958 In' Mai 18 13:37:26 gewitterhexe amixer[607]: Simple mixer control 'ADAT1 Input Source',0 Mai 18 13:37:26 gewitterhexe amixer[607]: Capabilities: enum Mai 18 13:37:26 gewitterhexe amixer[607]: Items: 'ADAT1' 'Internal' Mai 18 13:37:26 gewitterhexe amixer[607]: Item0: 'ADAT1' Mai 18 13:37:26 gewitterhexe amixer[610]: Simple mixer control 'Sync Mode',0 Mai 18 13:37:26 gewitterhexe amixer[610]: Capabilities: enum Mai 18 13:37:26 gewitterhexe amixer[610]: Items: 'AutoSync' 'Master' 'Word Clock' Mai 18 13:37:26 gewitterhexe amixer[610]: Item0: 'Master' Mai 18 13:37:26 gewitterhexe systemd[1]: Started Set up the RME Hammerfall card. ----- Nevertheless, sound is still bad. However, if I run: # /usr/bin/amixer -D hw:HAMMERFALL sset 'Preferred Sync Source' 'IEC958 In' on the command line, even directly after running above unit file manually, everything sounds as expected. I can run above unit file a dozend times, it won't fix the sound, though. Now I am wondering, what is the difference bewteen using the command line and running amixer via ExecStart? Any known issues here? Anything obvious that I've missed? I am running a recent arch and would kindly ask this not to be an excuse for another general systemd discussion, if somehow possible. Thanks Ede ------------------------------------------------------------------------------ Mobile security can be enabling, not merely restricting. Employees who bring their own devices (BYOD) to work are irked by the imposition of MDM restrictions. Mobile Device Manager Plus allows you to control only the apps on BYO-devices by containerizing them, leaving personal data untouched! https://ad.doubleclick.net/ddm/clk/304595813;131938128;j _______________________________________________ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
