Hi, im likely 1 of 5 people using this on linux but heres my problem.
roland do not make drivers for linux. the VT-4 has multiple input and output routes from a single device.
Output routes : OUT | MIC IN | CARRIER
Input routes : MIX | WET | DRY
to use this as an audio interface you want to use the WET (with sound effects) or DRY (no sound effects) MIX will include the output audio
currently manjaro is detecting the VT-4 just fine, however i can only use 1 output and 1 input route that i assume the os has decided is the default. the issue is here, the input defaults to is the MIX route .
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 480M
|__ Port 2: Dev 5, If 3, Class=Vendor Specific Class, Driver=snd-usb-audio, 480M
|__ Port 2: Dev 5, If 1, Class=Vendor Specific Class, Driver=snd-usb-audio, 480M
|__ Port 2: Dev 5, If 2, Class=Vendor Specific Class, Driver=snd-usb-audio, 480M
|__ Port 2: Dev 5, If 0, Class=Vendor Specific Class, Driver=, 480M
|__ Port 3: Dev 3, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 3, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 3: Dev 3, If 2, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 4: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 4: Dev 4, If 1, Class=Human Interface Device, Driver=usbhid, 12M
|__ Port 4: Dev 4, If 2, Class=Human Interface Device, Driver=usbhid, 12M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 10000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/10p, 480M
|__ Port 5: Dev 2, If 3, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 5: Dev 2, If 1, Class=Video, Driver=uvcvideo, 480M
|__ Port 5: Dev 2, If 2, Class=Audio, Driver=snd-usb-audio, 480M
|__ Port 5: Dev 2, If 0, Class=Video, Driver=uvcvideo, 480M
|__ Port 9: Dev 3, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 9: Dev 3, If 1, Class=Wireless, Driver=btusb, 12M
|__ Port 10: Dev 4, If 0, Class=Human Interface Device, Driver=usbhid, 12M
All of the devices on port 2 are the roland VT-4. just being able to make linux use the correct input route such as WET would be perfect, its all i need. just being on MIX means its totally unusable.
System:
Kernel: 5.13.19-2-MANJARO x86_64 bits: 64 compiler: gcc v: 11.1.0
parameters: BOOT_IMAGE=/boot/vmlinuz-5.13-x86_64
root=UUID=d3c1afb1-2d89-466b-bdca-5b895522df05 rw quiet apparmor=1
security=apparmor resume=UUID=e94bd4e6-8698-43ba-8804-a7f7ecacbb21
udev.log_priority=3
Console: tty pts/2 wm: kwin_x11 DM: SDDM Distro: Manjaro Linux
base: Arch Linux
Machine:
Type: Desktop Mobo: Micro-Star model: MPG B550I GAMING EDGE WIFI (MS-7C92)
v: 1.0 serial: <filter> UEFI: American Megatrends LLC. v: 1.62
date: 04/09/2021
Battery:
Message: No system battery data found. Is one present?
Memory:
RAM: total: 31.28 GiB used: 7.58 GiB (24.2%)
Array-1: capacity: 128 GiB slots: 2 EC: None max-module-size: 64 GiB
note: est.
Device-1: DIMM 0 size: 16 GiB speed: 3000 MT/s type: DDR4
detail: synchronous unbuffered (unregistered) bus-width: 64 bits
total: 64 bits manufacturer: G.Skill part-no: F4-3000C14-16GTZR serial: N/A
Device-2: DIMM 0 size: 16 GiB speed: 3000 MT/s type: DDR4
detail: synchronous unbuffered (unregistered) bus-width: 64 bits
total: 64 bits manufacturer: G.Skill part-no: F4-3000C14-16GTZR serial: N/A
CPU:
Info: 8-Core model: AMD Ryzen 7 5800X socket: AM4 bits: 64 type: MT MCP
arch: Zen 3 family: 19 (25) model-id: 21 (33) stepping: 0 microcode: A201009
cache: L1: 512 KiB L2: 4 MiB L3: 32 MiB bogomips: 121659
Speed: 3643 MHz min/max: 2200/3800 MHz base/boost: 3800/4850 boost: enabled
volts: 1.1 V ext-clock: 100 MHz Core speeds (MHz): 1: 3643 2: 3713 3: 3001
4: 3879 5: 3766 6: 4655 7: 3702 8: 2926 9: 3342 10: 3993 11: 2904 12: 4668
13: 3549 14: 3394 15: 3875 16: 3766
Flags: 3dnowprefetch abm adx aes aperfmperf apic arat avic avx avx2 bmi1
bmi2 bpext cat_l3 cdp_l3 clflush clflushopt clwb clzero cmov cmp_legacy
constant_tsc cpb cpuid cqm cqm_llc cqm_mbm_local cqm_mbm_total cqm_occup_llc
cr8_legacy cx16 cx8 de decodeassists erms extapic extd_apicid f16c
flushbyasid fma fpu fsgsbase fsrm fxsr fxsr_opt ht hw_pstate ibpb ibrs ibs
invpcid irperf lahf_lm lbrv lm mba mca mce misalignsse mmx mmxext monitor
movbe msr mtrr mwaitx nonstop_tsc nopl npt nrip_save nx ospke osvw
overflow_recov pae pat pausefilter pclmulqdq pdpe1gb perfctr_core
perfctr_llc perfctr_nb pfthreshold pge pku pni popcnt pse pse36 rdpid rdpru
rdrand rdseed rdt_a rdtscp rep_good sep sha_ni skinit smap smca smep ssbd
sse sse2 sse4_1 sse4_2 sse4a ssse3 stibp succor svm svm_lock syscall tce
topoext tsc tsc_scale umip v_spec_ctrl v_vmsave_vmload vaes vgif vmcb_clean
vme vmmcall vpclmulqdq wbnoinvd wdt xgetbv1 xsave xsavec xsaveerptr xsaveopt
xsaves
Vulnerabilities: Type: itlb_multihit status: Not affected
Type: l1tf status: Not affected
Type: mds status: Not affected
Type: meltdown status: Not affected
Type: spec_store_bypass
mitigation: Speculative Store Bypass disabled via prctl and seccomp
Type: spectre_v1
mitigation: usercopy/swapgs barriers and __user pointer sanitization
Type: spectre_v2 mitigation: Full AMD retpoline, IBPB: conditional, IBRS_FW,
STIBP: always-on, RSB filling
Type: srbds status: Not affected
Type: tsx_async_abort status: Not affected
Graphics:
Device-1: NVIDIA GA102 [GeForce RTX 3080] driver: nvidia v: 470.63.01
alternate: nouveau,nvidia_drm bus-ID: 2b:00.0 chip-ID: 10de:2206
class-ID: 0300
Device-2: Logitech Webcam C270 type: USB driver: snd-usb-audio,uvcvideo
bus-ID: 1-5:2 chip-ID: 046d:0825 class-ID: 0102 serial: <filter>
Display: server: X.Org 1.20.13 compositor: kwin_x11 driver: loaded: nvidia
display-ID: :0 screens: 1
Screen-1: 0 s-res: 7040x1440 s-dpi: 108 s-size: 1656x342mm (65.2x13.5")
s-diag: 1691mm (66.6")
Monitor-1: DP-1 res: 1920x1080 hz: 60 dpi: 93 size: 527x297mm (20.7x11.7")
diag: 605mm (23.8")
Monitor-2: DP-2 res: 2560x1440 hz: 60 dpi: 109 size: 597x336mm (23.5x13.2")
diag: 685mm (27")
Monitor-3: DP-4 res: 2560x1440 dpi: 109 size: 598x336mm (23.5x13.2")
diag: 686mm (27")
OpenGL: renderer: NVIDIA GeForce RTX 3080/PCIe/SSE2
v: 4.6.0 NVIDIA 470.63.01 direct render: Yes
Audio:
Device-1: NVIDIA GA102 High Definition Audio driver: snd_hda_intel v: kernel
bus-ID: 2b:00.1 chip-ID: 10de:1aef class-ID: 0403
Device-2: AMD Starship/Matisse HD Audio vendor: Micro-Star MSI
driver: snd_hda_intel v: kernel bus-ID: 2d:00.4 chip-ID: 1022:1487
class-ID: 0403
Device-3: Logitech Webcam C270 type: USB driver: snd-usb-audio,uvcvideo
bus-ID: 1-5:2 chip-ID: 046d:0825 class-ID: 0102 serial: <filter>
Device-4: Roland VT-4 type: USB driver: snd-usb-audio bus-ID: 3-2:5
chip-ID: 0582:021a class-ID: ff00
Sound Server-1: ALSA v: k5.13.19-2-MANJARO running: yes
Sound Server-2: sndio v: N/A running: no
Sound Server-3: JACK v: 1.9.19 running: no
Sound Server-4: PulseAudio v: 15.0 running: yes
Sound Server-5: PipeWire v: 0.3.38 running: yes
Network:
Device-1: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel bus-ID: 29:00.0
chip-ID: 8086:2723 class-ID: 0280
IF: wlo1 state: down mac: <filter>
Device-2: Realtek RTL8125 2.5GbE vendor: Micro-Star MSI driver: r8169
v: kernel port: f000 bus-ID: 2a:00.0 chip-ID: 10ec:8125 class-ID: 0200
IF: enp42s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
IP v4: <filter> type: dynamic noprefixroute scope: global
broadcast: <filter>
IP v6: <filter> type: noprefixroute scope: link
IF-ID-1: virbr0 state: down mac: <filter>
IP v4: <filter> scope: global broadcast: <filter>
WAN IP: <filter>
Bluetooth:
Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 1-9:3
chip-ID: 8087:0029 class-ID: e001
Report: rfkill ID: hci0 rfk-id: 1 state: up address: see --recommends
Logical:
Message: No logical block device data found.
RAID:
Hardware-1: Advanced Micro Devices [AMD] Device driver: N/A v: N/A port: N/A
bus-ID: 02:00.1 chip-ID: 1022.43bd rev: class-ID: 0104
Drives:
Local Storage: total: 1.86 TiB used: 380.3 GiB (19.9%)
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Sabrent model: N/A
size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 type: SSD serial: <filter> rev: ECFM12.2 temp: 33.9 C scheme: GPT
SMART: yes health: PASSED on: 1y 204d 14h cycles: 1,222
read-units: 31,248,884 [15.9 TB] written-units: 70,899,266 [36.3 TB]
ID-2: /dev/nvme1n1 maj-min: 259:4 vendor: Sabrent model: N/A
size: 953.87 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 type: SSD serial: <filter> rev: ECFM12.2 temp: 29.9 C scheme: MBR
SMART: yes health: PASSED on: 1y 204d 13h cycles: 1,223
read-units: 31,293,055 [16.0 TB] written-units: 71,265,269 [36.4 TB]
Message: No optical or floppy data found.
Partition:
ID-1: / raw-size: 919.16 GiB size: 903.66 GiB (98.31%)
used: 54.67 GiB (6.0%) fs: ext4 block-size: 4096 B dev: /dev/nvme0n1p2
maj-min: 259:2 label: N/A uuid: d3c1afb1-2d89-466b-bdca-5b895522df05
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 288 KiB (0.1%) fs: vfat block-size: 512 B dev: /dev/nvme0n1p1
maj-min: 259:1 label: NO_LABEL uuid: E746-E365
ID-3: /run/media/altirix/Nvme2 raw-size: 953.87 GiB size: 937.9 GiB (98.33%)
used: 325.34 GiB (34.7%) fs: ext4 block-size: 4096 B dev: /dev/nvme1n1p1
maj-min: 259:5 label: Nvme2 uuid: fef41033-984c-4026-95a9-04441ac7614c
Swap:
Kernel: swappiness: 60 (default) cache-pressure: 100 (default)
ID-1: swap-1 type: partition size: 34.41 GiB used: 293.5 MiB (0.8%)
priority: -2 dev: /dev/nvme0n1p3 maj-min: 259:3 label: swap
uuid: e94bd4e6-8698-43ba-8804-a7f7ecacbb21
Unmounted:
Message: No unmounted partitions found.
USB:
Hub-1: 1-0:1 info: Full speed (or root) Hub ports: 10 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Device-1: 1-5:2 info: Logitech Webcam C270 type: Video,Audio
driver: snd-usb-audio,uvcvideo interfaces: 4 rev: 2.0 speed: 480 Mb/s
power: 500mA chip-ID: 046d:0825 class-ID: 0102 serial: <filter>
Device-2: 1-9:3 info: Intel AX200 Bluetooth type: Bluetooth driver: btusb
interfaces: 2 rev: 2.0 speed: 12 Mb/s power: 100mA chip-ID: 8087:0029
class-ID: e001
Device-3: 1-10:4 info: Micro Star MYSTIC LIGHT type: HID
driver: hid-generic,usbhid interfaces: 1 rev: 1.1 speed: 12 Mb/s
power: 500mA chip-ID: 1462:7c92 class-ID: 0300 serial: <filter>
Hub-2: 2-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Hub-3: 3-0:1 info: Full speed (or root) Hub ports: 4 rev: 2.0
speed: 480 Mb/s chip-ID: 1d6b:0002 class-ID: 0900
Device-1: 3-2:5 info: Roland VT-4 type: <vendor specific>
driver: snd-usb-audio interfaces: 4 rev: 2.0 speed: 480 Mb/s power: 500mA
chip-ID: 0582:021a class-ID: ff00
Device-2: 3-3:3 info: USB HID GMMK Pro type: Keyboard,Mouse
driver: hid-generic,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
power: 100mA chip-ID: 320f:5046 class-ID: 0300
Device-3: 3-4:4 info: Logitech PRO X Wireless type: Mouse,Keyboard,HID
driver: hid-generic,usbhid interfaces: 3 rev: 2.0 speed: 12 Mb/s
power: 500mA chip-ID: 046d:c094 class-ID: 0300 serial: <filter>
Hub-4: 4-0:1 info: Full speed (or root) Hub ports: 4 rev: 3.1 speed: 10 Gb/s
chip-ID: 1d6b:0003 class-ID: 0900
Sensors:
System Temperatures: cpu: 66.4 C mobo: 38.8 C gpu: nvidia temp: 34 C
Fan Speeds (RPM): fan-1: 1311 fan-2: 1632 fan-3: 0 fan-4: 0 fan-5: 0
fan-6: 0 fan-7: 0 fan-8: 0 fan-9: 0 fan-10: 0 gpu: nvidia fan: 0%
Info:
Processes: 389 Uptime: 1d 1h 2m wakeups: 0 Init: systemd v: 249
tool: systemctl Compilers: gcc: 11.1.0 Packages: 1408 pacman: 1388 lib: 407
flatpak: 0 snap: 20 Shell: Bash (su) v: 5.1.8 running-in: konsole
inxi: 3.3.06
### Configuration dump generated at Sat Oct 9 18:46:56 2021
load-module module-device-restore
load-module module-stream-restore
load-module module-card-restore
load-module module-augment-properties
load-module module-switch-on-port-available
load-module module-udev-detect
load-module module-alsa-card device_id="3" name="usb-046d_0825_165641B0-02" card_name="alsa_card.usb-046d_0825_165641B0-02" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1"
load-module module-alsa-card device_id="0" name="pci-0000_2b_00.1" card_name="alsa_card.pci-0000_2b_00.1" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1"
load-module module-alsa-card device_id="1" name="pci-0000_2d_00.4" card_name="alsa_card.pci-0000_2d_00.4" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1"
load-module module-jackdbus-detect channels=2
load-module module-bluetooth-policy
load-module module-bluetooth-discover
load-module module-bluez5-discover
load-module module-dbus-protocol
load-module module-native-protocol-unix
load-module module-gsettings
load-module module-combine
load-module module-combine-sink
load-module module-default-device-restore
load-module module-always-sink
load-module module-intended-roles
load-module module-suspend-on-idle
load-module module-console-kit
load-module module-systemd-login
load-module module-position-event-sounds
load-module module-role-cork
load-module module-filter-heuristics
load-module module-filter-apply
load-module module-x11-publish display=:0 xauthority=/home/altirix/.Xauthority
load-module module-x11-xsmp display=:0 xauthority=/home/altirix/.Xauthority session_manager=local/Michael-PC:@/tmp/.ICE-unix/1062,unix/Michael-PC:/tmp/.ICE-unix/1062
load-module module-alsa-card device_id="2" name="usb-Roland_VT-4-01" card_name="alsa_card.usb-Roland_VT-4-01" namereg_fail=false tsched=yes fixed_latency_range=no ignore_dB=no deferred_volume=yes use_ucm=yes avoid_resampling=no card_properties="module-udev-detect.discovered=1"
load-module module-cli-protocol-unix
set-sink-volume alsa_output.pci-0000_2d_00.4.iec958-stereo 0x000
set-sink-mute alsa_output.pci-0000_2d_00.4.iec958-stereo no
suspend-sink alsa_output.pci-0000_2d_00.4.iec958-stereo yes
set-sink-volume combined 0x000
set-sink-mute combined yes
suspend-sink combined yes
set-sink-volume alsa_output.usb-Roland_VT-4-01.iec958-stereo 0x10000
set-sink-mute alsa_output.usb-Roland_VT-4-01.iec958-stereo no
suspend-sink alsa_output.usb-Roland_VT-4-01.iec958-stereo no
set-sink-volume alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2 0x000
set-sink-mute alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2 yes
suspend-sink alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2 yes
set-source-volume alsa_input.usb-046d_0825_165641B0-02.mono-fallback 0x10000
set-source-mute alsa_input.usb-046d_0825_165641B0-02.mono-fallback no
suspend-source alsa_input.usb-046d_0825_165641B0-02.mono-fallback yes
set-source-volume alsa_output.pci-0000_2d_00.4.iec958-stereo.monitor 0x10000
set-source-mute alsa_output.pci-0000_2d_00.4.iec958-stereo.monitor no
suspend-source alsa_output.pci-0000_2d_00.4.iec958-stereo.monitor yes
set-source-volume combined.monitor 0x10000
set-source-mute combined.monitor no
suspend-source combined.monitor yes
set-source-volume alsa_output.usb-Roland_VT-4-01.iec958-stereo.monitor 0x10000
set-source-mute alsa_output.usb-Roland_VT-4-01.iec958-stereo.monitor no
suspend-source alsa_output.usb-Roland_VT-4-01.iec958-stereo.monitor no
set-source-volume alsa_input.usb-Roland_VT-4-01.analog-stereo 0x10000
set-source-mute alsa_input.usb-Roland_VT-4-01.analog-stereo no
suspend-source alsa_input.usb-Roland_VT-4-01.analog-stereo yes
set-source-volume alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2.monitor 0x10000
set-source-mute alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2.monitor no
suspend-source alsa_output.pci-0000_2b_00.1.hdmi-stereo-extra2.monitor yes
set-card-profile alsa_card.usb-046d_0825_165641B0-02 input:mono-fallback
set-card-profile alsa_card.pci-0000_2b_00.1 output:hdmi-stereo-extra2
set-card-profile alsa_card.pci-0000_2d_00.4 output:iec958-stereo
set-card-profile alsa_card.usb-Roland_VT-4-01 output:iec958-stereo+input:analog-stereo
set-default-sink alsa_output.usb-Roland_VT-4-01.iec958-stereo
set-default-source alsa_input.usb-Roland_VT-4-01.analog-stereo
### EOF
have installed alsa-tools
Desktop environment is KDE plasma
Kernel 5.13.19-2-MANJARO