Re: Problem: invalid UAC_FEATURE_UNIT descriptor / fireface UCX

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Florian,

On 21/12/12 23:36, Florian Hanisch wrote:
> Hi Matthew,
>
> did you try to use alsa-mixer ? It was not working when I was trying the
> fireface ucx with the modified mixer.c some weeks ago. It would be
> interesting to know whether it is different on your system / with the
> new patch.


I'm not sure exactly what you mean by alsa-mixer, as I do not have a 
program by that name.

$ cat /proc/asound/card1/id
Babyface2312334

$ amixer --card 1
Simple mixer control 'Speaker',0
   Capabilities: pvolume pvolume-joined
   Playback channels: Mono
   Limits: Playback 0 - 130
   Mono: Playback 130 [100%] [0.00dB]


So, we see that exactly one control is provided. At first, I thought 
this control had no effect at all, as the audio output only becomes 
audibly quieter when this control is well below 10%/-60dB. The rest of 
the range sounds like full volume, which is definitely not correct.

So, perhaps there is a bug either in the usb audio driver or in the 
class-compliance of the RME interfaces. Is there a double dB-mapping or 
something?

Also:

$ dmesg | grep -b5 'usb 1-1'
...
75253:[   37.663034] usb 1-1: new high-speed USB device number 2 using 
ehci_hcd
75327-[   37.714346] ehci_hcd 0000:00:1a.7: port 1 reset complete, port 
enabled
75401-[   37.714360] ehci_hcd 0000:00:1a.7: GetStatus port:1 status 
001005 0  ACK POWER sig=se0 PE CONNECT
75502:[   37.777245] usb 1-1: skipped 1 descriptor after configuration
75567:[   37.777256] usb 1-1: skipped 7 descriptors after interface
75629:[   37.777261] usb 1-1: skipped 2 descriptors after interface
75691:[   37.777268] usb 1-1: skipped 1 descriptor after endpoint
75751:[   37.777273] usb 1-1: skipped 2 descriptors after interface
75813:[   37.777278] usb 1-1: skipped 1 descriptor after endpoint
75873:[   37.777283] usb 1-1: skipped 2 descriptors after interface
75935:[   37.777288] usb 1-1: skipped 1 descriptor after endpoint
75995:[   37.777293] usb 1-1: skipped 2 descriptors after interface
76057:[   37.777298] usb 1-1: skipped 1 descriptor after endpoint
76117:[   37.777303] usb 1-1: skipped 5 descriptors after interface
76179:[   37.777308] usb 1-1: skipped 1 descriptor after endpoint
76239:[   37.777313] usb 1-1: skipped 1 descriptor after endpoint
76299:[   37.777356] usb 1-1: default language 0x0409
76347:[   37.777731] usb 1-1: udev 2, busnum 1, minor = 1
76399:[   37.777738] usb 1-1: New USB device found, idVendor=0424, 
idProduct=3fd7
76475:[   37.777746] usb 1-1: New USB device strings: Mfr=1, Product=2, 
SerialNumber=3
76556:[   37.777752] usb 1-1: Product: Babyface (23123346)
76609:[   37.777757] usb 1-1: Manufacturer: RME
76651:[   37.777761] usb 1-1: SerialNumber: D6E37D3FA346FC8
76705:[   37.778681] usb 1-1: usb_probe_device
76746:[   37.778689] usb 1-1: configuration #1 chosen from 1 choice
76808:[   37.778749] usb 1-1: adding 1-1:1.0 (config #1, interface 0)
76872-[   37.778872] snd-usb-audio 1-1:1.0: usb_probe_interface
76930-[   37.778882] snd-usb-audio 1-1:1.0: usb_probe_interface - got id
76997-[   37.781652] cannot get ctl value: req = 0x83, wValue = 0x200, 
wIndex = 0x0, type = 4
77085-[   37.785159] cannot get ctl value: req = 0x83, wValue = 0x200, 
wIndex = 0x0, type = 4
77173-[   37.785314] cannot get ctl value: req = 0x83, wValue = 0x200, 
wIndex = 0x0, type = 4
77261:[   37.785372] usb 1-1: adding 1-1:1.1 (config #1, interface 1)
77325:[   37.785675] usb 1-1: adding 1-1:1.2 (config #1, interface 2)
77389:[   37.785904] usb 1-1: adding 1-1:1.3 (config #1, interface 3)
...


This doesn't look like things are going totally smoothly. But audio 
output DOES work, and the one volume control that is visible does have 
some effect.


Is this different to your findings with the Fireface UCX?


Thanks,
Matt

------------------------------------------------------------------------------
Master HTML5, CSS3, ASP.NET, MVC, AJAX, Knockout.js, Web API and
much more. Get web development skills now with LearnDevNow -
350+ hours of step-by-step video tutorials by Microsoft MVPs and experts.
SALE $99.99 this month only -- learn more at:
http://p.sf.net/sfu/learnmore_122812
_______________________________________________
Alsa-user mailing list
Alsa-user@xxxxxxxxxxxxxxxxxxxxx
https://lists.sourceforge.net/lists/listinfo/alsa-user


[Index of Archives]     [ALSA Devel]     [Linux Audio Users]     [Fedora Users]     [Fedora Desktop]     [Fedora SELinux]     [Big List of Linux Books]     [Yosemite News]     [Yosemite Photos]     [KDE Users]     [Fedora Tools]

  Powered by Linux