On ven., 2012-10-19 at 15:53 +0200, Daniel Mack wrote:
[Please do not drop the mailing list address]
Oups my bad... Sorry!
On 19.10.2012 15:45, Didier 'Ptitjes' Villevalois wrote:
On ven., 2012-10-19 at 15:20 +0200, Daniel Mack wrote:
On 19.10.2012 15:09, Didier 'Ptitjes' Villevalois wrote:
Hello,
I've bought a Reloop Play usb soundcard and I'd like to make it work with ALSA.
It is a 4-channels USB soundcard. It is currently correctly recognized by ALSA as a 4-channels soundcard and I can correctly open the channels and feed them with audio. However, no audio is output by the box.
You're most probably affected by a regression in the driver that was fixes in 3.6.0 and 3.5.5 (and all later kernels). Could you please try one of these and tell us if that works?
Sure, I'll do that now (I'm currently using 3.5.4 + mbp8,3 patches). I guess 3.5.7 is OK ? I'm building it now and will reboot on that.
Any kernel >= 3.6.0 and 3.5.5 should be ok.
So there was no change after rebooting with 3.5.7 kernel.
It seems to contain a Texas Instrument TUSB3200AC chipset (same chipset as the Maya44 USB and Hercules DJ console). I guess the problem is a firmware problem but I don't know what to do about it.
I've got a MacOS X driver that works correctly, if that of any help. (I suppose the Windows driver works too but I don't have any Windows at hand.)
Did you install any vendor driver on OS X or does it just work with the one that ships with the OS?
Yep, I had to install the Vendor-provided driver.
What was the effect without that special driver? Could you see the device listed in the AudioMIDISetup? Could you stream audio? IOW, is the effect you see there comparable to how your Linux box behaves? You could try and remove that driver again and see what happens.
So here is what I did:
1) Removed the MacOs X driver and rebooted 2) Launched AudioMIDISetup (I did not know of this tool before :p) 3) Launched Mixxx
Now the box is outputing some crazy sound when Mixxx is not playing. When I start playing a track some more noise adds to the existing noise. Is this simply a PCM format error (sample rate/bit depth) ??
The fun thing (if I can say that) is that after rebooting to Linux 3.5.7 there is now the same sound when I run Mixxx/Linux!! And I can observe the same added noise when I launch a track.
But it seems the built-in USB soundcard support on MacOS is very poor.
No it's not. In fact, it's actually very good. Vendors who keep their hardware compliant to the USB audio spec don't have to ship any driver at all. And this is how it should be on Linux, too.
Ah ok!
Also the mpkg install file (inside the provided install dmg file) was called something like "firmware0_and_driver.mpkg". This is why I suspected a firmware problem. However I tried to look at the package content and did not find any .bin file or whatever could be a standalone firmware file. Maybe it is embedded in the driver install executable.
Maybe, but they could also write the firmware permanently to the device once with that tool. That would be perfect for Linux users.
I took some screenshots of the AudioMIDISetup app and of the content of the driver install packages. I don't if that can be of any help. You can see them here: http://ptitjes.free.fr/screenshots/
I don't know what step I should take know. Reinstalling drivers on OS X to see if there is any change ?
Thanks again for your help. Didier.