Re: [alsa-devel] Audiophile Delta 24/96 Midi Out continuously sends zeroes (alsa 1.0.14)
Romain Bossart wrote:
Selon Clemens Ladisch cladisch@fastmail.net:
That is, the zeroes are _not_ sent when you're not using jack? When nothing is connected, or when you use aplaymidi or amidi to send something, everything is OK?
Here is a summary of the various tests I did. I have just one card: Audiophile Delta 24/96. My kernel is now 2.6.22.1 RT patched & alsa 1.0.14, Audio works perfectly. I don't think jack is the problem.
Config #2 = Delta Midi Out -> (Midi In) Instrument (Midi Out/Thru) -> Delta Midi In and 'amidi -p hw:0,0 -d'. Jack being started or not.
Symptoms: tons of zeroes are shown by amidi as soon as I launch it. The stream is so intense I can actually hear it in my speakers/monitors (need to switch to better MIDI cables, I know!). amidi and /proc/asound/card0/midi0 give the same number of transmitted bytes.
With "transmitted", you meant "received"? When Jack is not running, there is no software to send anything. If the number of _transmitted_ bytes changes anyway, this would be a bug in ALSA.
Config #2b = Delta Midi Out -> Delta Midi In and 'amidi -p hw:0,0 -d', Jack being started or not.
Symptoms: identical to config#2. Moreover, if meanwhile I send some Midi commands with amidi ('amidi -p hw:0,0 -S C01C'), I don't find this data in my dump.
Apparently, the output port is broken. While it is theoretically possible that the driver doesn't initialize the card correctly, I cannot imagine a bug that would cause the port to presume that there is data to send.
Could you test if the port sends data even before the driver (or Linux) is loaded, or in Windows?
Regards, Clemens
Clemens Ladisch wrote:
Romain Bossart wrote:
Selon Clemens Ladisch cladisch@fastmail.net:
That is, the zeroes are _not_ sent when you're not using jack? When nothing is connected, or when you use aplaymidi or amidi to send something, everything is OK?
Here is a summary of the various tests I did. I have just one card: Audiophile Delta 24/96. My kernel is now 2.6.22.1 RT patched & alsa 1.0.14, Audio works perfectly. I don't think jack is the problem.
Config #2 = Delta Midi Out -> (Midi In) Instrument (Midi Out/Thru) -> Delta Midi In and 'amidi -p hw:0,0 -d'. Jack being started or not.
Symptoms: tons of zeroes are shown by amidi as soon as I launch it. The stream is so intense I can actually hear it in my speakers/monitors (need to switch to better MIDI cables, I know!). amidi and /proc/asound/card0/midi0 give the same number of transmitted bytes.
With "transmitted", you meant "received"? When Jack is not running, there is no software to send anything. If the number of _transmitted_ bytes changes anyway, this would be a bug in ALSA.
Oops, 'reveived' is correct. Thank you.
Config #2b = Delta Midi Out -> Delta Midi In and 'amidi -p hw:0,0 -d', Jack being started or not.
Symptoms: identical to config#2. Moreover, if meanwhile I send some Midi commands with amidi ('amidi -p hw:0,0 -S C01C'), I don't find this data in my dump.
Apparently, the output port is broken. While it is theoretically possible that the driver doesn't initialize the card correctly, I cannot imagine a bug that would cause the port to presume that there is data to send.
You're right the output port seems to be broken.
Could you test if the port sends data even before the driver (or Linux) is loaded, or in Windows?
I am not sure I can try this. I will change my card.
Regards, Clemens
Thank you very much for your help.
Regards, Romain
Hi all, Hi Clemens,
just for your information, the midi out was broken. I grabbed a bought an old layla and everything works now.
Thank you again for your help.
Cheers, Romain
Romain Bossart wrote:
Clemens Ladisch wrote:
Romain Bossart wrote:
Selon Clemens Ladisch cladisch@fastmail.net:
That is, the zeroes are _not_ sent when you're not using jack? When nothing is connected, or when you use aplaymidi or amidi to send something, everything is OK?
Here is a summary of the various tests I did. I have just one card: Audiophile Delta 24/96. My kernel is now 2.6.22.1 RT patched & alsa 1.0.14, Audio works perfectly. I don't think jack is the problem.
Config #2 = Delta Midi Out -> (Midi In) Instrument (Midi Out/Thru) -> Delta Midi In and 'amidi -p hw:0,0 -d'. Jack being started or not.
Symptoms: tons of zeroes are shown by amidi as soon as I launch it. The stream is so intense I can actually hear it in my speakers/monitors (need to switch to better MIDI cables, I know!). amidi and /proc/asound/card0/midi0 give the same number of transmitted bytes.
With "transmitted", you meant "received"? When Jack is not running, there is no software to send anything. If the number of _transmitted_ bytes changes anyway, this would be a bug in ALSA.
Oops, 'reveived' is correct. Thank you.
Config #2b = Delta Midi Out -> Delta Midi In and 'amidi -p hw:0,0 -d', Jack being started or not.
Symptoms: identical to config#2. Moreover, if meanwhile I send some Midi commands with amidi ('amidi -p hw:0,0 -S C01C'), I don't find this data in my dump.
Apparently, the output port is broken. While it is theoretically possible that the driver doesn't initialize the card correctly, I cannot imagine a bug that would cause the port to presume that there is data to send.
You're right the output port seems to be broken.
Could you test if the port sends data even before the driver (or Linux) is loaded, or in Windows?
I am not sure I can try this. I will change my card.
Regards, Clemens
Thank you very much for your help.
Regards, Romain
participants (2)
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Clemens Ladisch -
Romain Bossart