I have a fresh install of Unity 7.6:
root@chris-Aura:/dev# uname -a
Linux chris-Aura 5.19.0-26-generic #27-Ubuntu SMP PREEMPT_DYNAMIC Wed Nov 23 20:44:15 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
The /dev/ttyUSBx device path does not currently exist or appear when my desired device is plugged in.
I have seen similar posts regarding the Brltty screen reader being the issue so I have removed this and restarted but this does not improve the situation.
sudo apt remove brltty
I can see the device being recognised when I run dmesg:
[ 2785.269566] usb 1-1: new full-speed USB device number 14 using xhci_hcd
[ 2785.426355] usb 1-1: New USB device found, idVendor=2100, idProduct=9068, bcdDevice=10.00
[ 2785.426364] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2785.426368] usb 1-1: Product: CT68 Radio Cable
[ 2785.426371] usb 1-1: Manufacturer: RT Systems
[ 2785.426374] usb 1-1: SerialNumber: RT7DCUPB
Is is the CT68 Radio Cable that I'm hoping to use. I note in the above output that the information stops after the device's serial number - there is no 'attaching' to a USB port.
The lsusb command shows the CT68 device (second from bottom line):
root@chris-Aura:/dev# lsusb
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface
Bus 001 Device 007: ID 046d:c31d Logitech, Inc. Media Keyboard K200
Bus 001 Device 006: ID 1bcf:0005 Sunplus Innovation Technology Inc. Optical Mouse
Bus 001 Device 005: ID 0b95:6802 ASIX Electronics Corp. AX68002 KVM Switch SoC
Bus 001 Device 003: ID 1a40:0101 Terminus Technology Inc. Hub
Bus 001 Device 014: ID 2100:9068 RT Systems CT68 Radio Cable
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
root@chris-Aura:/dev#
Running the command - usb-devices does show the device (5th line) :
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 14 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
P: Vendor=2100 ProdID=9068 Rev=10.00
S: Manufacturer=RT Systems
S: Product=CT68 Radio Cable
S: SerialNumber=RT7DCUPB
C: #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=90mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=02(O) Atr=02(Bulk) MxPS= 64 Ivl=0ms
E: Ad=81(I) Atr=02(Bulk) MxPS= 64 Ivl=0ms
My output from lsmod is:
root@chris-Aura:/dev# lsmod
Module Size Used by
cp210x 40960 0
usbserial 57344 1 cp210x
ccm 20480 3
rfcomm 86016 4
snd_hda_codec_hdmi 81920 1
cmac 16384 3
snd_hda_codec_realtek 163840 1
snd_hda_codec_generic 102400 1 snd_hda_codec_realtek
algif_hash 16384 1
ledtrig_audio 16384 1 snd_hda_codec_generic
algif_skcipher 16384 1
af_alg 32768 6 algif_hash,algif_skcipher
bnep 28672 2
snd_soc_avs 131072 0
snd_soc_skl 176128 0
snd_soc_hdac_hda 24576 1 snd_soc_skl
binfmt_misc 24576 1
snd_hda_ext_core 36864 3 snd_soc_avs,snd_soc_hdac_hda,snd_soc_skl
snd_soc_sst_ipc 20480 1 snd_soc_skl
snd_soc_sst_dsp 36864 1 snd_soc_skl
snd_soc_acpi_intel_match 69632 1 snd_soc_skl
snd_soc_acpi 16384 2 snd_soc_acpi_intel_match,snd_soc_skl
snd_soc_core 368640 3 snd_soc_avs,snd_soc_hdac_hda,snd_soc_skl
snd_compress 24576 1 snd_soc_core
ac97_bus 16384 1 snd_soc_core
snd_pcm_dmaengine 20480 1 snd_soc_core
intel_rapl_msr 20480 0
intel_rapl_common 40960 1 intel_rapl_msr
snd_hda_intel 53248 3
intel_tcc_cooling 16384 0
x86_pkg_temp_thermal 20480 0
snd_intel_dspcfg 36864 3 snd_soc_avs,snd_hda_intel,snd_soc_skl
intel_powerclamp 24576 0
snd_intel_sdw_acpi 20480 1 snd_intel_dspcfg
coretemp 24576 0
snd_hda_codec 172032 6 snd_hda_codec_generic,snd_soc_avs,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda
snd_hda_core 118784 9 snd_hda_codec_generic,snd_soc_avs,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_soc_hdac_hda,snd_soc_skl
snd_hwdep 20480 1 snd_hda_codec
kvm_intel 430080 0
snd_pcm 155648 9 snd_soc_avs,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_compress,snd_soc_core,snd_soc_skl,snd_hda_core,snd_pcm_dmaengine
i915 3121152 88
joydev 32768 0
input_leds 16384 0
snd_seq_midi 20480 0
kvm 1138688 1 kvm_intel
iwlmvm 610304 0
nls_iso8859_1 16384 1
snd_seq_midi_event 16384 1 snd_seq_midi
drm_buddy 20480 1 i915
crct10dif_pclmul 16384 1
ttm 98304 1 i915
snd_rawmidi 45056 1 snd_seq_midi
ghash_clmulni_intel 16384 0
mac80211 1327104 1 iwlmvm
mei_pxp 20480 0
drm_display_helper 184320 1 i915
aesni_intel 376832 6
snd_seq 77824 2 snd_seq_midi,snd_seq_midi_event
mei_hdcp 24576 0
btusb 61440 0
cec 81920 2 drm_display_helper,i915
btrtl 24576 1 btusb
hid_generic 16384 0
libarc4 16384 1 mac80211
drm_kms_helper 200704 2 drm_display_helper,i915
btbcm 24576 1 btusb
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
crypto_simd 16384 1 aesni_intel
btintel 45056 1 btusb
cryptd 24576 3 crypto_simd,ghash_clmulni_intel
btmtk 16384 1 btusb
snd_timer 40960 2 snd_seq,snd_pcm
i2c_algo_bit 16384 1 i915
iwlwifi 503808 1 iwlmvm
rapl 20480 0
fb_sys_fops 16384 1 drm_kms_helper
intel_cstate 20480 0
snd 114688 19 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
intel_wmi_thunderbolt 20480 0
bluetooth 827392 34 btrtl,btmtk,btintel,btbcm,bnep,btusb,rfcomm
usbhid 65536 0
wmi_bmof 16384 0
mei_me 49152 2
syscopyarea 16384 1 drm_kms_helper
ee1004 20480 0
cfg80211 1040384 3 iwlmvm,iwlwifi,mac80211
soundcore 16384 1 snd
hid 159744 2 usbhid,hid_generic
sysfillrect 20480 1 drm_kms_helper
ecdh_generic 16384 2 bluetooth
sysimgblt 20480 1 drm_kms_helper
ecc 40960 1 ecdh_generic
ir_rc6_decoder 20480 0
mei 139264 5 mei_hdcp,mei_pxp,mei_me
intel_xhci_usb_role_switch 16384 0
intel_pch_thermal 20480 0
rc_rc6_mce 16384 0
ite_cir 28672 0
rc_core 65536 5 ite_cir,ir_rc6_decoder,rc_rc6_mce,cec
acpi_pad 184320 0
mac_hid 16384 0
msr 16384 0
parport_pc 53248 0
ppdev 24576 0
lp 28672 0
parport 73728 3 parport_pc,lp,ppdev
drm 585728 14 drm_kms_helper,drm_display_helper,drm_buddy,i915,ttm
pstore_blk 16384 0
ramoops 28672 0
reed_solomon 28672 1 ramoops
pstore_zone 32768 1 pstore_blk
efi_pstore 20480 0
ip_tables 32768 0
x_tables 57344 1 ip_tables
autofs4 45056 2
rtsx_pci_sdmmc 36864 0
crc32_pclmul 16384 0
e1000e 303104 0
rtsx_pci 106496 1 rtsx_pci_sdmmc
i2c_i801 36864 0
i2c_smbus 20480 1 i2c_i801
ahci 49152 2
libahci 49152 1 ahci
xhci_pci 24576 0
xhci_pci_renesas 20480 1 xhci_pci
wmi 32768 2 intel_wmi_thunderbolt,wmi_bmof
video 61440 1 i915
root@chris-Aura:/dev#
I've seen other questions attempting to create the device path with the mknod command but I haven't heard of any success from doing this - I may try this if I become desperate enough.
Is there anything else I can investigate.
Many thanks in advance.