I am able to use the analogue outputs on the UMC1820 with camilladsp (on linux), but nothing seems to get through on either the electrical spdif or the optical toslink. Using an alsa loopback works fine to get audio to the UMC1820, but I really want to drive camilladsp with input from another computer, not the one running camilladsp.
The number of channels for analogue output also seems to vary, having worked with 8 channels, 10 channels and even 12 channels . Can't remember what the circumstances were at the time.
My current conclusion on this issue is that UMC1820 simply does not work properly with camilladsp / linux. Prior to this, I was using brutefir, mainly with other cards, but also with the UMC1820 - it fairs no better.
If someone could show me a config.yaml that will work to access the UMC1820 I would be very grateful. I have wasted literally weeks on trial and error tests.
None of these issues are helped by the complete lack of any detailed tutorials or instructions concerning any linux software. The instructions, such as they are, are always incomplete and seem to assume you are an expert in everything that the instructions do not cover.
Many thanks,
The number of channels for analogue output also seems to vary, having worked with 8 channels, 10 channels and even 12 channels . Can't remember what the circumstances were at the time.
My current conclusion on this issue is that UMC1820 simply does not work properly with camilladsp / linux. Prior to this, I was using brutefir, mainly with other cards, but also with the UMC1820 - it fairs no better.
If someone could show me a config.yaml that will work to access the UMC1820 I would be very grateful. I have wasted literally weeks on trial and error tests.
None of these issues are helped by the complete lack of any detailed tutorials or instructions concerning any linux software. The instructions, such as they are, are always incomplete and seem to assume you are an expert in everything that the instructions do not cover.
Many thanks,
Looking at the back panel, it says that spdif input is number 9 & 10. That would be 8 & 9 in camilladsp since it starts numbering from zero. Did you try capturing from those channels?
This device has adat, and that usually means that the total number of channels depends on sample rate. You can use aplay and arecord to help figuring out what to use, see the readme here: https://github.com/HEnquist/camilla...md#find-valid-playback-and-capture-parameters
This device has adat, and that usually means that the total number of channels depends on sample rate. You can use aplay and arecord to help figuring out what to use, see the readme here: https://github.com/HEnquist/camilla...md#find-valid-playback-and-capture-parameters
According to the manual and my experiences using these interfaces, the UMC1820 can be put into two different modes and this changes what happens with the optical (TOSLINK) and coax SPDIF inputs and outputs on the rear panel. The two modes are:
1. SPDIF MODE: there are 10 analog output channels plus 2 SPDIF outputs (channels 11 and 12) via both the TOSLINK and coax connector. Coax SPDIF input is disabled.
2. ADAT MODE: there are 10 analog output channels plus up to 8 ADAT channels via the optical connectors (at 44.1 and 48kHz). In this mode only the coax SPDIF output (and inputs) function. Channel assignments for these depend on sample rate.
These two modes are switched on the front panel, not from the software/driver side. See the manual for more info.
See page 12, item 13 of the user guide for info on how to switch modes and for details on the sample rate dependencies that I mentioned above. Changing modes is done using the small button labeled "OPT I/O" just below the phones level knob on the front panel. DO NOT change the setting while the unit is in opration - it reboots and this may include one or more loud pops on the outputs.
1. SPDIF MODE: there are 10 analog output channels plus 2 SPDIF outputs (channels 11 and 12) via both the TOSLINK and coax connector. Coax SPDIF input is disabled.
2. ADAT MODE: there are 10 analog output channels plus up to 8 ADAT channels via the optical connectors (at 44.1 and 48kHz). In this mode only the coax SPDIF output (and inputs) function. Channel assignments for these depend on sample rate.
These two modes are switched on the front panel, not from the software/driver side. See the manual for more info.
See page 12, item 13 of the user guide for info on how to switch modes and for details on the sample rate dependencies that I mentioned above. Changing modes is done using the small button labeled "OPT I/O" just below the phones level knob on the front panel. DO NOT change the setting while the unit is in opration - it reboots and this may include one or more loud pops on the outputs.
I use the 1820 and it works great, including optical and coax digital input.
Not at the same time though, both are input 8 and 9 like Hendrik says and you switch between them with a physical switch like Charlie says. Don't have it in front of me but it's near the headphone outputs, and the only button with a lighter grey box behind it.
Not at the same time though, both are input 8 and 9 like Hendrik says and you switch between them with a physical switch like Charlie says. Don't have it in front of me but it's near the headphone outputs, and the only button with a lighter grey box behind it.