![]() ![]() It is not a modem.Ĭdc_acm 2-1.4.1:1.0: ttyACM0: USB ACM device Usb 2-1.4.1: configuration #1 chosen from 1 choiceĬdc_acm 2-1.4.1:1.0: This device cannot do calls on its own. Usb 2-1.4.1: Manufacturer: Microchip Technology Inc. Usb 2-1.4.1: Product: Simple CDC Device Demo Usb 2-1.4.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Usb 2-1.4.1: New USB device found, idVendor=04d8, idProduct=000a Cdc rs 232 emulation demo driver windows 7 full#Usb 2-1.4.1: new full speed USB device number 18 using ehci_hcd I also tried setting selinux in 'permissive' mode, but that did not help either. OK, I just did a yum update, got a new kernel and glibc. Both machines are running the *same* system software. Cdc rs 232 emulation demo driver windows 7 serial#Try to access the device (typically with minicom, but any software that can work with a serial port also fails). Version-Release number of selected component (if applicable):minicom-2.3-6.1.el6Ģ. I cannot figure out what is different between the two machines. Also the desktop machine has a PCI quad serial port card and has the 8250.nr_uarts kernel parameter set to 8 (I use one of these ports for a dialup modem for Internet access). The only real differences between the machines are that the desktop machine has several VMs defined (under KVM) and one running. root dialout system_u:object_r:tty_device_t:s0 /dev/ttyACM0ĭevice /dev/ttyACM0 access failed: No such file or directory. 'ls' on the problem machine shows the device file:Ĭrw-rw. The 'getbooleans' out for both machines are exactly the same. I have added myself to the 'dialout' group on both machines. Both machines are running the same O/S: CentOS 6.7, with the same kernel (2.6.32-573.12.1.el6.x86_64), both with SELINUX 'enforcing'. This device works just fine one one machine (my laptop) and not on another machine (my desktop). Usbcore: registered new interface driver cdc_acmĬdc_acm: v0.26:USB Abstract Control Model driver for USB modems and ISDN adapters It is not a modem.Ĭdc_acm 2-1.1:1.0: ttyACM0: USB ACM device Usb 2-1.1: configuration #1 chosen from 1 choiceĬdc_acm 2-1.1:1.0: This device cannot do calls on its own. Usb 2-1.1: Manufacturer: Microchip Technology Inc. Usb 2-1.1: Product: Simple CDC Device Demo Usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 Usb 2-1.1: New USB device found, idVendor=04d8, idProduct=000a Usb 2-1.1: new full speed USB device number 6 using ehci_hcd I have a USB serial port device, a RR CirKits LCC Buffer USB, which shows up as: ![]()
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