Re: [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10

[Takashi Iwai <tiwai@suse.de>]

On Mon, 19 Oct 2026 11:23:48 +0200,
Takashi Iwai wrote:
> 
> On Mon, 19 Oct 2026 10:39:46 +0200,
> Will Bush wrote:
> > 
> > On Sun, Oct 18, 2026, at 11:42 AM, Takashi Iwai wrote:
> > > Interesting, it's just a descriptor read and this fails on your device
> > > by some reason.  Could you try to ignore the error like below, and
> > > verify whether it continues to work?
> > 
> > Thanks for the quick reply. I reverted my patch and applied yours. Device keeps
> > disconnecting and reconnecting (just more slowly). It never ends up working.
> > 
> >   ❯ journalctl -k -b -0 -o short-monotonic | grep -E 'usb 3-4|snd-usb-audio 3-4'
> >   [    2.264012] blazar kernel: usb 3-4: new high-speed USB device number 3 using xhci_hcd
> >   [    2.458009] blazar kernel: usb 3-4: New USB device found, idVendor=1397, idProduct=0508, bcdDevice= 1.35
> >   [    2.484013] blazar kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> >   [    2.484035] blazar kernel: usb 3-4: Product: UMC204HD 192k
> >   [    2.484050] blazar kernel: usb 3-4: Manufacturer: BEHRINGER
> >   [   12.976010] blazar kernel: usb 3-4: USB disconnect, device number 3
> >   [   18.012013] blazar kernel: usb 3-4: failed to read device descriptor: -110
> >   [   18.012623] blazar kernel: usb 3-4: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 41)
> >   [   18.012768] blazar kernel: usb 3-4: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 41)
> >   [   18.012903] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 1 (-19)
> >   [   18.013047] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 2 (-19)
> >   [   18.013181] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 3 (-19)
> >   [   18.013309] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 4 (-19)
> >   [   18.013434] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 0 (-19)
> >   [   18.013565] blazar kernel: usb 3-4: 10:0: cannot get min/max values for control 2 (id 10)
> >   [   18.013690] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [   18.013822] blazar kernel: usb 3-4: [10] FU [PCM Playback Volume] ch = 4, val = 0/1/1
> >   [   18.013959] blazar kernel: usb 3-4: 10:0: cannot get min/max values for control 2 (id 10)
> >   [   18.014102] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [   18.014239] blazar kernel: usb 3-4: [10] FU [PCM Playback Volume] ch = 1, val = 0/1/1
> >   [   18.014374] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 1 (-19)
> >   [   18.014508] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 2 (-19)
> >   [   18.014635] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 0 (-19)
> >   [   18.014763] blazar kernel: usb 3-4: 11:0: cannot get min/max values for control 2 (id 11)
> >   [   18.014890] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [   18.015021] blazar kernel: usb 3-4: [11] FU [Mic Capture Volume] ch = 2, val = 0/1/1
> >   [   18.015151] blazar kernel: usb 3-4: 11:0: cannot get min/max values for control 2 (id 11)
> >   [   18.015278] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [   18.015408] blazar kernel: usb 3-4: [11] FU [Mic Capture Volume] ch = 1, val = 0/1/1
> >   [   18.300040] blazar kernel: usb 3-4: new high-speed USB device number 6 using xhci_hcd
> >   [   18.491087] blazar kernel: usb 3-4: New USB device found, idVendor=1397, idProduct=0508, bcdDevice= 1.35
> >   [   18.517036] blazar kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> >   [   18.517242] blazar kernel: usb 3-4: Product: UMC204HD 192k
> >   [   18.517398] blazar kernel: usb 3-4: Manufacturer: BEHRINGER
> >   [   23.644013] blazar kernel: usb 3-4: failed to read device descriptor: -110
> >   [   33.884021] blazar kernel: usb 3-4: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 41)
> >   [   49.244015] blazar kernel: usb 3-4: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 41)
> >   [   59.484034] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 1 (-110)
> >   [   69.725032] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 2 (-110)
> >   [   79.965020] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 3 (-110)
> >   [   90.204027] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 4 (-110)
> >   [  100.444027] blazar kernel: usb 3-4: 10:0: failed to get current value for ch 0 (-110)
> >   [  110.684056] blazar kernel: usb 3-4: 10:0: cannot get min/max values for control 2 (id 10)
> >   [  110.684281] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [  110.684397] blazar kernel: usb 3-4: [10] FU [PCM Playback Volume] ch = 4, val = 0/1/1
> >   [  115.804025] blazar kernel: usb 3-4: 10:0: cannot get min/max values for control 2 (id 10)
> >   [  115.812386] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [  115.812521] blazar kernel: usb 3-4: [10] FU [PCM Playback Volume] ch = 1, val = 0/1/1
> >   [  131.164026] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 1 (-110)
> >   [  141.404011] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 2 (-110)
> >   [  151.644020] blazar kernel: usb 3-4: 11:0: failed to get current value for ch 0 (-110)
> >   [  161.885033] blazar kernel: usb 3-4: 11:0: cannot get min/max values for control 2 (id 11)
> >   [  161.885326] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [  161.885446] blazar kernel: usb 3-4: [11] FU [Mic Capture Volume] ch = 2, val = 0/1/1
> >   [  167.004009] blazar kernel: usb 3-4: 11:0: cannot get min/max values for control 2 (id 11)
> >   [  167.004224] blazar kernel: usb 3-4: Warning! Unlikely small volume range (=1), linear volume or custom curve?
> >   [  167.004341] blazar kernel: usb 3-4: [11] FU [Mic Capture Volume] ch = 1, val = 0/1/1
> >   [  167.005012] blazar kernel: usb 3-4: Quirk or no altset; falling back to MIDI 1.0
> >   [  187.486013] blazar kernel: usb 3-4: USB disconnect, device number 6
> >   [  187.785034] blazar kernel: usb 3-4: new high-speed USB device number 7 using xhci_hcd
> >   ...
> >   [ 1035.327013] blazar kernel: usb 3-4: New USB device found, idVendor=1397, idProduct=0508, bcdDevice= 1.35
> >   [ 1035.353013] blazar kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> >   [ 1035.353185] blazar kernel: usb 3-4: Product: UMC204HD 192k
> >   [ 1035.353301] blazar kernel: usb 3-4: Manufacturer: BEHRINGER
> >   [ 1040.476017] blazar kernel: usb 3-4: failed to read device descriptor: -110
> >   [ 1050.717019] blazar kernel: usb 3-4: parse_audio_format_rates_v2v3(): unable to retrieve number of sample rates (clock 41)
> >   ...
> 
> OK, thanks.  Then the only way to introduce some deny list.
> Below is a quick fix.  I'm going to submit & merge this later.

... and now we received another report for the similar Behringer
model, so both should be listed.  I'm going to update the patch and
submit.
  https://bugzilla.suse.com/show_bug.cgi?id=1285896


Takashi