I experience some random glitches/drop-outs with my usb dac. I cannot see something relevant in dmesg when it happen.
In fact, there’s nothing about deconnexions.
if I let a :
dmesg | grep usb I’ve got this :
[ 0.692800] usbcore: registered new interface driver usbfs [ 0.692806] usbcore: registered new interface driver hub [ 0.692822] usbcore: registered new device driver usb [ 1.013513] usb 1-3: new full-speed USB device number 2 using xhci_hcd [ 1.148988] usbcore: registered new interface driver usbhid [ 1.148989] usbhid: USB HID core driver [ 1.149287] input: Razer Razer Imperator as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/0003:1532:002F.0001/input/input0 [ 1.149312] hid-generic 0003:1532:002F.0001: input,hidraw0: USB HID v1.11 Mouse [Razer Razer Imperator] on usb-0000:00:14.0-3/input0 [ 1.149420] input: Razer Razer Imperator as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1/0003:1532:002F.0002/input/input1 [ 1.203451] hid-generic 0003:1532:002F.0002: input,hidraw1: USB HID v1.11 Keyboard [Razer Razer Imperator] on usb-0000:00:14.0-3/input1 [ 1.316857] usb 1-4: new low-speed USB device number 3 using xhci_hcd [ 1.533367] input: USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.0/0003:04D9:1818.0003/input/input2 [ 1.590434] hid-generic 0003:04D9:1818.0003: input,hidraw2: USB HID v1.10 Keyboard [USB Keyboard] on usb-0000:00:14.0-4/input0 [ 1.613739] input: USB Keyboard as /devices/pci0000:00/0000:00:14.0/usb1/1-4/1-4:1.1/0003:04D9:1818.0004/input/input3 [ 1.670411] hid-generic 0003:04D9:1818.0004: input,hidraw3: USB HID v1.10 Device [USB Keyboard] on usb-0000:00:14.0-4/input1 [ 1.783344] usb 1-5: new high-speed USB device number 4 using xhci_hcd [ 2.032343] input: Audio-gd Audio-gd as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:040D:3410.0005/input/input4 [ 2.086966] hid-generic 0003:040D:3410.0005: input,hidraw4: USB HID v1.00 Device [Audio-gd Audio-gd] on usb-0000:00:14.0-5/input2 [ 2.597518] usbcore: registered new interface driver snd-usb-audio [ 42.188891] usb 1-5: USB disconnect, device number 4 [ 937.770211] usb 1-5: new high-speed USB device number 5 using xhci_hcd [ 938.137075] input: Audio-gd Audio-gd as /devices/pci0000:00/0000:00:14.0/usb1/1-5/1-5:1.2/0003:040D:3410.0006/input/input18 [ 938.193780] hid-generic 0003:040D:3410.0006: input,hidraw4: USB HID v1.00 Device [Audio-gd Audio-gd] on usb-0000:00:14.0-5/input2
no errors finally. But this happen anyway.
Does it concern usb power ? usb alimentation ?
I see that “usb-devices | grep ‘Product=|MxPwr’” show me that the max power is very low ?!
S: Product=Audio-gd C: #Ifs= 3 Cfg#= 1 Atr=c0 MxPwr=50mA
only 50ma. Is it correct ? I don’t think so.
I also change the firmware of my DAC, no results…
if anyone got an answer ?