Re: [Alsa-user] USB feature unit

2015-03-23 Thread Tom Jewell
On 03/23/2015 12:37 AM, Clemens Ladisch wrote: Tom Jewell wrote: I'm trying to debug some code that implements a feature unit in an (incoming) USB device, based on an AT32UC3B1256 controller. The feature unit contains only a volume control, for which the host requests and I provide value

[Alsa-user] USB feature unit

2015-03-20 Thread Tom Jewell
I'm trying to debug some code that implements a feature unit in an (incoming) USB device, based on an AT32UC3B1256 controller. The feature unit contains only a volume control, for which the host requests and I provide values for MAX, MIN, CUR, and RES. The host then tries to set RES to half t

Re: [Alsa-user] Spikes when recording

2011-05-21 Thread Tom Jewell
It's conceivable that it's the UPS itself that performs some chore at the same time everyday. You could try plugging into the mains (without UPS) during that period of time and see if the problem goes away. Otherwise, I agree that it could be some sort of once-a-day RFI that may be difficult t

[Alsa-user] alc888 spdif input

2009-10-29 Thread Tom Jewell
Hi - I have an MSI Wind U123 netbook, which although it does not have physical spdif in and out connectors, has a Realtek ALC888S codec with spdif in and out available on pins 47 and 48. I want to make the U123 usable with spdif, so I have connected an optical (TOSLINK) transmitter to pin 48