Bug 204631
| Summary: | ALSA: usb-audio: implicit fb quirk for Behringer UFX1604 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | senderberlin |
| Component: | Sound(ALSA) | Assignee: | Jaroslav Kysela (perex) |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | luca0820+kernel, tiwai |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 4.19 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
Thanks, now I submitted the patch to upstream and will merge it soon later. |
Behringer UFX1604 playback (snd-usb-audio) pops, clicks. -------------------------------------------------------- Workaround: in /linux/sound/usb/pcm.c in line 342: ``` case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ ep = 0x81; ifnum = 1; goto add_sync_ep_from_ifnum; ``` needs to be: ``` case USB_ID(0x1397, 0x0002): /* Behringer UFX1204 */ case USB_ID(0x1397, 0x0001): /* Behringer UFX1604 */ ep = 0x81; ifnum = 1; goto add_sync_ep_from_ifnum; ``` for Behringer UFX1604 Tested with new compiled snd-usb-audio.ko. Playback ok without clicks. relates to commit: https://github.com/torvalds/linux/commit/5e35dc0338d85ccebacf3f77eca1e5dea73155e8#diff-bb3848ab95be1b898fb7f15d8beae70c