At the risk of being redundant, I'm resending this with a simpler "[PATCH]" subject to reach a broader audience, since no comment has been made yet: TLDR? Please just glance at the patch at the end and include it in the kernel. :) Some days ago, I found this excellent informational post, and that Mike Oliphant's patch is in mainline now: http://blog.nostatic.org/2020/01/getting-boss-gt-1-effects-processor-to.html Since I was fairly certain it applies to the Roland devices I own, I added my USB IDs. Wonderfully, now USB audio capture seems to be working perfectly from the three devices I can test: the Boutique D-05, INTEGRA-7, & R-26! (The previously asserted VG-99 didn't need to be included in the patch for it to work.) I've also tested all three for playback capability, since that's implied when a device is using implicit feedback, which I hadn't realized the first time around. Anyway, they all seem to be working as expected for playback too. There are two caveats for playback, though: 1. The INTEGRA-7 won't output playback in any mode other than its "44.1 [kHz]" setting, though capture works with all of its Sample Rate possibilities. I think this is imposed by the hardware itself, and hence isn't a glitch. 2. The D-05's analog outputs aren't as clean as the other two devices, with little quiet occasional clicks sounding something like dust on an LP record's play. Possibly that can be due to it having only 1/8" mini-jack connections, but I suspect something more driver-related as It's not noticed during use as a synthesizer. Its firmware version is "1.02(1033)," so not up-to-date which may mean it's just the hardware itself, but I've decided not to risk any changes with it yet. If I knew I could revert it, that would be another story. Also its USB captures, play perfectly & cleanly on my usual sound device, the Edirol UA-4FX. You may know this, as the detection of these devices shows partial compatibility with the existing kernel, but here are the commands I've had to use for their sample formats: Boutique D-05: arecord -D hw:Boutique -f S32_LE -c 2 -r 96000 ./file.wav aplay -D hw:Boutique -f S32_LE -c 2 -r 96000 ./file.wav INTEGRA-7: arecord -D hw:INTEGRA7 -f S32_LE -c 2 -r 96000 ./file.wav (Then change MENU->SYSTEM->SOUND->Sampling Rate to 44.1 [kHz], otherwise its 96[kHz], and change MENU->SYSTEM->SOUND->Ext Part Source Select to USB AUDIO) arecord -D hw:INTEGRA7 -f S32_LE -c 2 -r 44100 ./file-44100.wav aplay -D hw:INTEGRA7 -f S32_LE -c 2 -r 44100 ./file-44100.wav R-26: (Through its built-in controls, first configure the MENU->AUDIO I/F SETUP->SAMPLE RATE to "96.0 kHz.") arecord -D hw:R26AUDIO -f S32_LE -r 96000 -c 2 ./file.wav aplay -D hw:R26AUDIO -f S32_LE -r 96000 -c 2 ./file.wav (Then via use of similar commands, & the "AUDIO I/F" tab on its main screen having both "LOOP BACK" & "DIRECT MONITOR" enabled, I was able to begin a new composite recording, voicing-over what I'd recorded earlier, by playing it back while interjecting - very fun!) The behavior on the vanilla kernel (whether or not "pasuspender -- cat" is running concurrently) follows. For each of these commands, dmesg is bombarded with lines like "[ 4681.162863] usb 2-1.2: Unable to change format on ep #8e: already in use" Boutique D-05: arecord -D hw:Boutique -f S32_LE -r 96000 -c 2 ./file.wav Recording WAVE './file.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo (After a brief timeout, it says this & ends:) arecord: pcm_read:2153: read error: Input/output error aplay -D hw:Boutique -f S32_LE -r 96000 -c 2 ./valid-file.wav Playing WAVE './valid-file.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo (After a brief timeout, it says this & ends:) aplay: pcm_write:2061: write error: Input/output error INTEGRA-7: arecord -D hw:INTEGRA7 -f S32_LE -r 96000 -c 2 ./file.wav Recording WAVE './file.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo (After a brief timeout, it says this & ends:) arecord: pcm_read:2153: read error: Input/output error (Then change MENU->SYSTEM->SOUND->Sampling Rate to 44.1 [kHz], otherwise its 96[kHz], and change MENU->SYSTEM->SOUND->Ext Part Source Select to USB AUDIO) arecord -D hw:INTEGRA7 -f S32_LE -r 44100 -c 2 ./file.wav Recording WAVE './file.wav' : Signed 32 bit Little Endian, Rate 44100 Hz, Stereo (After a brief timeout, it says this & ends:) arecord: pcm_read:2153: read error: Input/output error aplay -D hw:INTEGRA7 -f S32_LE -r 44100 -c 2 ./valid-file.wav Playing WAVE './valid-file.wav' : Signed 32 bit Little Endian, Rate 44100 Hz, Stereo (After a brief timeout, it says this & ends:) aplay: pcm_write:2061: write error: Input/output error R-26: arecord -D hw:R26AUDIO -f S32_LE -r 96000 -c 2 ./file.wav Recording WAVE './file.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo (After a brief timeout, it says this & ends:) arecord: pcm_read:2153: read error: Input/output error aplay -D hw:R26AUDIO -f S32_LE -r 96000 -c 2 ./valid-file.wav Playing WAVE './valid-file.wav' : Signed 32 bit Little Endian, Rate 96000 Hz, Stereo (After a brief timeout, it says this & ends:) aplay: pcm_write:2061: write error: Input/output error I searched a bit for other Roland-related devices people have had USB digital audio issues with over the years, and took the liberty of adding them to the patch too. Likely there are still more that people haven't tried or, at least, queried about issues. I hope this can be added to the mainline kernel, as this support should help many that have struggled. I, certainly, have been hoping somebody would figure this out for quite a while, and even bought a USB through/monitoring device to try to develop it myself (sadly, the software supporting that has its own bugs, so I probably should've just used wireshark). Suffice it to say, I'm quite happy to have this figured out without having had to delve into USB debugging stuff I lack experience with! :) Thanks for any comments or looking into adding this, Lucas Endres The patch follows (I removed my previous VG-99 additions since it already works): diff -Nurp linux-5.11.9.orig/sound/usb/implicit.c linux-5.11.9.roland/sound/usb/implicit.c --- linux-5.11.9.orig/sound/usb/implicit.c 2021-03-24 05:54:19.000000000 -0500 +++ linux-5.11.9.roland/sound/usb/implicit.c 2021-03-30 17:49:08.143196280 -0500 @@ -71,27 +71,87 @@ static const struct snd_usb_implicit_fb_ .ep_num = 0x84, .iface = 0 }, /* MOTU MicroBook II */ /* No quirk for playback but with capture quirk (see below) */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00a6), /* Roland JUNO-G */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00ad), /* Roland SH-201 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00c2), /* Roland SonicCell */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00c4), /* Edirol M-16DX */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00c7), /* Roland V-Synth GT */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00da), /* BOSS GT-10 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00db), /* BOSS GT-10 Guitar Effects Processor */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00dc), /* BOSS GT-10B */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00de), /* Roland Fantom-G */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x00f8), /* Roland JUNO Series */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0111), /* Roland GAIA SH-01 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0120), /* Roland OCTA-CAPTURE */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0121), /* Roland OCTA-CAPTURE */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0123), /* Roland JUNO-Gi */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0127), /* Roland GR-55 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x012b), /* Roland DUO-CAPTURE */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x012f), /* Roland QUAD-CAPTURE */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0130), /* BOSS BR-80 */ - IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171), /* BOSS RC-505 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0132), /* Roland TRI-CAPTURE */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0138), /* BOSS RC-300 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x013e), /* Roland R-26 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x014d), /* BOSS GT-100 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0150), /* Roland TD-15 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0151), /* Roland TD-11 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0158), /* Roland TD-30 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0159), /* Roland DUO-CAPTURE EX */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x015b), /* Roland INTEGRA-7 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x015d), /* Roland R-88 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0171), /* BOSS RC-505 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x017c), /* Roland TR-8 */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0185), /* BOSS GP-10 */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x0189), /* BOSS GT-100v2 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x01b5), /* Roland Boutique Series Synthesizer */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d6), /* BOSS GT-1 */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01d8), /* BOSS Katana */ IMPLICIT_FB_SKIP_DEV(0x0582, 0x01e5), /* BOSS GT-001 */ - IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203), /* BOSS AD-10 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x01ff), /* Roland D-05 */ + IMPLICIT_FB_SKIP_DEV(0x0582, 0x0203), /* BOSS AD-10 */ {} /* terminator */ }; /* Implicit feedback quirk table for capture: only FIXED type */ static const struct snd_usb_implicit_fb_match capture_implicit_fb_quirks[] = { + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00a6, 0x0d, 0x01), /* Roland JUNO-G */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00ad, 0x0d, 0x01), /* Roland SH-201 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00c2, 0x0d, 0x01), /* Roland SonicCell */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00c4, 0x0d, 0x01), /* Edirol M-16DX */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00c7, 0x0d, 0x01), /* Roland V-Synth GT */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00da, 0x0d, 0x01), /* BOSS GT-10 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00db, 0x0d, 0x01), /* BOSS GT-10 Guitar Effects Processor */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00dc, 0x0d, 0x01), /* BOSS GT-10B */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00de, 0x0d, 0x01), /* Roland Fantom-G */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x00f8, 0x0d, 0x01), /* Roland JUNO Series */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0111, 0x0d, 0x01), /* Roland GAIA SH-01 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0120, 0x0d, 0x01), /* Roland OCTA-CAPTURE */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0121, 0x0d, 0x01), /* Roland OCTA-CAPTURE */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0123, 0x0d, 0x01), /* Roland JUNO-Gi */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0127, 0x0d, 0x01), /* Roland GR-55 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x012b, 0x0d, 0x01), /* Roland DUO-CAPTURE */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x012f, 0x0d, 0x01), /* Roland QUAD-CAPTURE */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0130, 0x0d, 0x01), /* BOSS BR-80 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0132, 0x0d, 0x01), /* Roland TRI-CAPTURE */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0138, 0x0d, 0x01), /* BOSS RC-300 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x013e, 0x0d, 0x01), /* Roland R-26 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x014d, 0x0d, 0x01), /* BOSS GT-100 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0150, 0x0d, 0x01), /* Roland TD-15 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0151, 0x0d, 0x01), /* Roland TD-11 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0158, 0x0d, 0x01), /* Roland TD-30 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x0159, 0x0d, 0x01), /* Roland DUO-CAPTURE EX */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x015b, 0x0d, 0x01), /* Roland INTEGRA-7 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x015d, 0x0d, 0x01), /* Roland R-88 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0171, 0x0d, 0x01), /* BOSS RC-505 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x017c, 0x0d, 0x01), /* Roland TR-8 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0185, 0x0d, 0x01), /* BOSS GP-10 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0189, 0x0d, 0x01), /* BOSS GT-100v2 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x01b5, 0x0d, 0x01), /* Roland Boutique Series Synthesizer */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d6, 0x0d, 0x01), /* BOSS GT-1 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01d8, 0x0d, 0x01), /* BOSS Katana */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x01e5, 0x0d, 0x01), /* BOSS GT-001 */ + IMPLICIT_FB_FIXED_DEV(0x0582, 0x01ff, 0x0d, 0x01), /* Roland D-05 */ IMPLICIT_FB_FIXED_DEV(0x0582, 0x0203, 0x0d, 0x01), /* BOSS AD-10 */ {} /* terminator */