Ubuntu max number of ttyACM devices enumerated

Hi, I need help with increasing max number of ttyACM ports my linux can enumerate.

I about 30 devices that are being enumerated as ttyACM0-ttyACM15, where 16 devices seems to be a limit :(, even thou I have about 30 connected.

Previously I used same USB Hubs and same laptop to talk to 24 ttyUSBx devices, and had no problem.

Anyone knows where can I increase ttyACM[0-???] limit?

Quote:

root@thinkpad:/etc# lsusb | grep SEG Bus 001 Device 070: ID 1366:0105 SEGGER Bus 001 Device 072: ID 1366:0105 SEGGER Bus 001 Device 073: ID 1366:0105 SEGGER Bus 001 Device 075: ID 1366:0105 SEGGER Bus 001 Device 076: ID 1366:0105 SEGGER Bus 001 Device 077: ID 1366:0105 SEGGER Bus 001 Device 078: ID 1366:0105 SEGGER Bus 001 Device 079: ID 1366:0105 SEGGER Bus 001 Device 080: ID 1366:0105 SEGGER Bus 001 Device 063: ID 1366:0105 SEGGER Bus 001 Device 064: ID 1366:0105 SEGGER Bus 001 Device 065: ID 1366:0105 SEGGER Bus 001 Device 066: ID 1366:0105 SEGGER Bus 001 Device 103: ID 1366:0105 SEGGER Bus 001 Device 101: ID 1366:0105 SEGGER Bus 001 Device 094: ID 1366:0105 SEGGER Bus 001 Device 091: ID 1366:0105 SEGGER Bus 001 Device 102: ID 1366:0105 SEGGER Bus 001 Device 099: ID 1366:0105 SEGGER Bus 001 Device 092: ID 1366:0105 SEGGER Bus 001 Device 089: ID 1366:0105 SEGGER Bus 001 Device 086: ID 1366:0105 SEGGER Bus 001 Device 093: ID 1366:0105 SEGGER Bus 001 Device 090: ID 1366:0105 SEGGER Bus 001 Device 087: ID 1366:0105 SEGGER Bus 001 Device 084: ID 1366:0105 SEGGER root@thinkpad:/etc# ll /dev | grep ACM crw-rw-rw-+ 1 root dialout 166, 0 Jun 25 11:00 ttyACM0 crw-rw-rw-+ 1 root dialout 166, 1 Jun 25 11:00 ttyACM1 crw-rw-rw-+ 1 root dialout 166, 10 Jun 25 11:00 ttyACM10 crw-rw-rw-+ 1 root dialout 166, 11 Jun 25 11:00 ttyACM11 crw-rw-rw-+ 1 root dialout 166, 12 Jun 25 11:00 ttyACM12 crw-rw-rw-+ 1 root dialout 166, 13 Jun 25 11:00 ttyACM13 crw-rw-rw-+ 1 root dialout 166, 14 Jun 25 10:59 ttyACM14 crw-rw-rw-+ 1 root dialout 166, 15 Jun 25 10:59 ttyACM15 crw-rw-rw-+ 1 root dialout 166, 2 Jun 25 11:00 ttyACM2 crw-rw-rw-+ 1 root dialout 166, 3 Jun 25 11:00 ttyACM3 crw-rw-rw-+ 1 root dialout 166, 4 Jun 25 10:59 ttyACM4 crw-rw-rw-+ 1 root dialout 166, 5 Jun 25 11:00 ttyACM5 crw-rw-rw-+ 1 root dialout 166, 6 Jun 25 11:00 ttyACM6 crw-rw-rw-+ 1 root dialout 166, 7 Jun 25 11:00 ttyACM7 crw-rw-rw-+ 1 root dialout 166, 8 Jun 25 11:00 ttyACM8 crw-rw-rw-+ 1 root dialout 166, 9 Jun 25 11:00 ttyACM9

Thanks!