Sorry, I wasn't paying attention, need coffee. It won't attach, no /dev/ttyACM node were created. I had attempted to manually set the driver with `modprobe cdc-acm vendor=0x04b8 product=0x0d12`, It didn't attach, but I removed it just in case. Original /sys/kernel/debug/usb/devices ``` T: Bus=07 Lev=02 Prnt=48 Port=00 Cnt=01 Dev#= 49 Spd=480 MxCh= 0 D: Ver= 2.01 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04b8 ProdID=0335 Rev= 0.03 S: Manufacturer=EPSON S: Product=EPSON HMD Audio C:* #Ifs= 1 Cfg#= 1 Atr=e0 MxPwr=100mA I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=86(I) Atr=03(Int.) MxPS= 64 Ivl=1ms T: Bus=07 Lev=02 Prnt=48 Port=01 Cnt=02 Dev#= 50 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04b8 ProdID=0d12 Rev= 2.00 S: Manufacturer=Seiko Epson Corporation S: Product=EPSON HMD Com&Sens S: SerialNumber=NPH269690577 C:* #Ifs= 4 Cfg#= 1 Atr=c0 MxPwr=100mA A: FirstIf#= 1 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01 I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=1ms I:* If#= 1 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=(none) E: Ad=84(I) Atr=03(Int.) MxPS= 8 Ivl=16ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=(none) E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=82(I) Atr=03(Int.) MxPS= 64 Ivl=1ms ``` /sys/kernel/debug/usb/devices after `sudo modprobe usbserial vendor=0x04b8 product=0x0d12` ``` T: Bus=07 Lev=02 Prnt=48 Port=01 Cnt=02 Dev#= 50 Spd=12 MxCh= 0 D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1 P: Vendor=04b8 ProdID=0d12 Rev= 2.00 S: Manufacturer=Seiko Epson Corporation S: Product=EPSON HMD Com&Sens S: SerialNumber=NPH269690577 C:* #Ifs= 4 Cfg#= 1 Atr=c0 MxPwr=100mA A: FirstIf#= 1 IfCount= 2 Cls=02(comm.) Sub=02 Prot=01 I:* If#= 0 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=83(I) Atr=03(Int.) MxPS= 64 Ivl=1ms I:* If#= 1 Alt= 0 #EPs= 1 Cls=02(comm.) Sub=02 Prot=01 Driver=(none) E: Ad=84(I) Atr=03(Int.) MxPS= 8 Ivl=16ms I:* If#= 2 Alt= 0 #EPs= 2 Cls=0a(data ) Sub=00 Prot=00 Driver=usbserial_generic E: Ad=01(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms I:* If#= 3 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid E: Ad=82(I) Atr=03(Int.) MxPS= 64 Ivl=1ms ``` Thank you, Ian On Sun, Nov 26, 2023 at 10:08 AM Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > On Sun, Nov 26, 2023 at 10:03:24AM -0600, Ian Zurutuza wrote: > > It won't attach, no /dev/ttyACM node were created. > > <snip> > > For some reason you sent this only to me, which is a bit rude to > everyone else on the mailing list. I'll be glad to respond if you > resend it to everyone. > > thanks, > > greg k-h