* [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10
@ 2026-10-18 16:34 Will Bush
2026-10-18 16:42 ` Takashi Iwai
0 siblings, 1 reply; 5+ messages in thread
From: Will Bush @ 2026-10-18 16:34 UTC (permalink / raw)
To: Takashi Iwai
Cc: Jaroslav Kysela, linux-sound, regressions, stable, Jan Lentfer,
Sebastian Dalfuß
Hi Takashi,
Thanks for all your work on usb-audio. I was updating my system (NixOS), which
took me from 7.2.9 to 7.2.10, and my Behringer UMC204HD device stopped working.
It gets into a loop:
[ 225.148019] blazar kernel: usb 3-4: new high-speed USB device number 19 using xhci_hcd
[ 225.340016] blazar kernel: usb 3-4: New USB device found, idVendor=1397, idProduct=0508, bcdDevice= 1.35
[ 225.366005] blazar kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 225.366187] blazar kernel: usb 3-4: Product: UMC204HD 192k
[ 225.366304] blazar kernel: usb 3-4: Manufacturer: BEHRINGER
[ 230.493021] blazar kernel: usb 3-4: failed to read device descriptor: -110
[ 230.493313] blazar kernel: snd-usb-audio 3-4:1.0: probe with driver snd-usb-audio failed with error -110
[ 235.612029] blazar kernel: usb 3-4: failed to read device descriptor: -110
[ 235.612302] blazar kernel: snd-usb-audio 3-4:1.3: probe with driver snd-usb-audio failed with error -110
[ 240.732035] blazar kernel: usb 3-4: failed to read device descriptor: -110
[ 240.732461] blazar kernel: snd-usb-audio 3-4:1.4: probe with driver snd-usb-audio failed with error -110
[ 240.732538] blazar kernel: usb 3-4: USB disconnect, device number 19
[ 241.019061] blazar kernel: usb 3-4: new high-speed USB device number 20 using xhci_hcd
Issue seems to be from commit: b5c4823cf3e4 ("ALSA: usb-audio: Apply boot quirk for Behringer models generically")
I was able to patch 7.2.10 to get it working again:
- if (USB_ID_VENDOR(id) == 0x1397)
+ if (id == USB_ID(0x1397, 0x1234))
Not sure if applying the quirk to every Behringer device is too broad or what
the fix should be. Ping me if you want me to test a patch.
#regzbot introduced: b5c4823cf3e4
Thanks,
Will Bush
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10
2026-10-18 16:34 [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10 Will Bush
@ 2026-10-18 16:42 ` Takashi Iwai
2026-10-19 8:39 ` Will Bush
0 siblings, 1 reply; 5+ messages in thread
From: Takashi Iwai @ 2026-10-18 16:42 UTC (permalink / raw)
To: Will Bush
Cc: Takashi Iwai, Jaroslav Kysela, linux-sound, regressions, stable,
Jan Lentfer, Sebastian Dalfuß
On Sun, 18 Oct 2026 18:34:27 +0200,
Will Bush wrote:
>
> Hi Takashi,
>
> Thanks for all your work on usb-audio. I was updating my system (NixOS), which
> took me from 7.2.9 to 7.2.10, and my Behringer UMC204HD device stopped working.
>
> It gets into a loop:
>
> [ 225.148019] blazar kernel: usb 3-4: new high-speed USB device number 19 using xhci_hcd
> [ 225.340016] blazar kernel: usb 3-4: New USB device found, idVendor=1397, idProduct=0508, bcdDevice= 1.35
> [ 225.366005] blazar kernel: usb 3-4: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> [ 225.366187] blazar kernel: usb 3-4: Product: UMC204HD 192k
> [ 225.366304] blazar kernel: usb 3-4: Manufacturer: BEHRINGER
> [ 230.493021] blazar kernel: usb 3-4: failed to read device descriptor: -110
> [ 230.493313] blazar kernel: snd-usb-audio 3-4:1.0: probe with driver snd-usb-audio failed with error -110
> [ 235.612029] blazar kernel: usb 3-4: failed to read device descriptor: -110
> [ 235.612302] blazar kernel: snd-usb-audio 3-4:1.3: probe with driver snd-usb-audio failed with error -110
> [ 240.732035] blazar kernel: usb 3-4: failed to read device descriptor: -110
> [ 240.732461] blazar kernel: snd-usb-audio 3-4:1.4: probe with driver snd-usb-audio failed with error -110
> [ 240.732538] blazar kernel: usb 3-4: USB disconnect, device number 19
> [ 241.019061] blazar kernel: usb 3-4: new high-speed USB device number 20 using xhci_hcd
>
> Issue seems to be from commit: b5c4823cf3e4 ("ALSA: usb-audio: Apply boot quirk for Behringer models generically")
>
> I was able to patch 7.2.10 to get it working again:
>
> - if (USB_ID_VENDOR(id) == 0x1397)
> + if (id == USB_ID(0x1397, 0x1234))
>
> Not sure if applying the quirk to every Behringer device is too broad or what
> the fix should be. Ping me if you want me to test a patch.
>
> #regzbot introduced: b5c4823cf3e4
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,
Takashi
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -865,7 +865,7 @@ static int snd_usb_cm1a_boot_quirk(struct usb_device *dev)
err = usb_get_descriptor(dev, USB_DT_DEVICE, 0, desc, sizeof(*desc));
if (err < 0) {
dev_err(&dev->dev, "failed to read device descriptor: %d\n", err);
- return err;
+ // return err;
}
return 0;
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10
2026-10-18 16:42 ` Takashi Iwai
@ 2026-10-19 8:39 ` Will Bush
2026-10-19 9:23 ` Takashi Iwai
0 siblings, 1 reply; 5+ messages in thread
From: Will Bush @ 2026-10-19 8:39 UTC (permalink / raw)
To: Takashi Iwai
Cc: Takashi Iwai, Jaroslav Kysela, linux-sound, regressions, stable,
Jan Lentfer, Sebastian Dalfuß
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)
...
Thanks,
Will
^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10
2026-10-19 8:39 ` Will Bush
@ 2026-10-19 9:23 ` Takashi Iwai
2026-10-19 10:23 ` Takashi Iwai
0 siblings, 1 reply; 5+ messages in thread
From: Takashi Iwai @ 2026-10-19 9:23 UTC (permalink / raw)
To: Will Bush
Cc: Takashi Iwai, Takashi Iwai, Jaroslav Kysela, linux-sound,
regressions, stable, Jan Lentfer, Sebastian Dalfuß
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.
thanks,
Takashi
-- 8< --
From: Takashi Iwai <tiwai@suse.de>
Subject: [PATCH] ALSA: usb-audio: Avoid applying boot quirk for Behringer
UMC204HD
Will reported that the recent boot quirk for Behringer devices broke
his UMC204HD (1397:0508). The quirk was to just run
usb_get_descriptor(), so I expected it rather harmful, but in this
case, it doesn't look so.
As a quick workaround, skip the quirk for UMC204HD.
Fixes: b5c4823cf3e4 ("ALSA: usb-audio: Apply boot quirk for Behringer models generically")
Reported-by: Will Bush <will@willbush.dev>
Closes: https://lore.kernel.org/45162613-2802-401c-84c9-742f9c8c68e6@app.fastmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/usb/quirks.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 4fadb1fdcdea..0dd06cc2c854 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -1790,8 +1790,14 @@ int snd_usb_apply_boot_quirk_once(struct usb_device *dev,
}
/* Behringer devices may need explicit device descriptor read at boot */
- if (USB_ID_VENDOR(id) == 0x1397)
+ if (USB_ID_VENDOR(id) == 0x1397) {
+ /* the quirk seems breaking on some Behringer devices */
+ switch (id) {
+ case USB_ID(0x1397, 0x0508): /* UMC204HD */
+ return 0;
+ }
return snd_usb_cm1a_boot_quirk(dev);
+ }
return 0;
}
--
2.55.0
^ permalink raw reply related [flat|nested] 5+ messages in thread
* Re: [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10
2026-10-19 9:23 ` Takashi Iwai
@ 2026-10-19 10:23 ` Takashi Iwai
0 siblings, 0 replies; 5+ messages in thread
From: Takashi Iwai @ 2026-10-19 10:23 UTC (permalink / raw)
To: Takashi Iwai
Cc: Will Bush, Takashi Iwai, Jaroslav Kysela, linux-sound,
regressions, stable, Jan Lentfer, Sebastian Dalfuß
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
^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2026-10-19 10:23 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2026-10-18 16:34 [REGRESSION] usb-audio: Behringer UMC204HD broken in 7.2.10 Will Bush
2026-10-18 16:42 ` Takashi Iwai
2026-10-19 8:39 ` Will Bush
2026-10-19 9:23 ` Takashi Iwai
2026-10-19 10:23 ` Takashi Iwai
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