George ([email protected])

Hi Kevin, I'm using a pair of RPI4b/4g for my testing... The same sound issue is also present on 1.4.0-b2 and 1.2.0. The initial Jambox release doesn't see the UMC202HD...

Should also mention that I get the same choppy sound when using the UMC202HD with the latest "2021-05-07-raspios-buster-armhf.img" with, or without updates...

Hi Kevin, no joy with adding the autoclock option to /etc/modprobe.d/snd_usb_audio.conf. The UMC202HD doesn't seem to be firmware upgradable, and I can't tell if it retains any settings after being...

Those "quirk_alias" fixes are really cool, unfortunately I haven't found one that does the trick. The QUIRK_FLAG_CTL_MSG_DELAY_1M reduced the number of "clock source" errors in dmesg by about half, but...

Hi Kevin, I've got two RPi4b with 3A power supplies and one has an updated bootloader. I've seen those videos, and it's fairly basic stuff. I have a feeling there's...

Changing the NPERIODS has no effect. Jack won't run when the UMC202HD device/card is selected. Here's a copy of the alsa-info file: [alsa-info.txt](https://github.com/kdoren/jambox-pi-gen/files/7654444/alsa-info.txt)

The capture is good and plays normally on a Windows PC, but is "choppy" when played back on the RPi (arecord would only accept S32_LE). The grep "ALSA.*format" /var/log/syslog only...

Audacity can record and playback in all three formats (S16/24/32_LE), but sometimes you need to set it twice to get sound. Chop is still present. Here are the errors reported...

Yes, the "chop" is on both channels. Just tried Ubuntu 20.04.3 live. There is a "glitch" that consistently shows up about every 20 seconds, but aside from that it works...

Exchanged the UMC202HD for a UMC204HD and it works perfectly. Looks like the UMC202HD just doesn't play nice with Linux...