Cannot open serial device /dev/ttyUSB0

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George Andguladze gandguladze at
Tue Jun 11 08:44:20 UTC 2013

I can read/write baud rates to EEPROM of the device using cp210x-program. Basically I have tried everything apart from reinstalling the OS (Ubuntu 10.04). What might be the issue? (for more info refer to the older conversations)

> Date: Tue, 11 Jun 2013 10:39:16 +0200
> Subject: Re: Cannot open serial device /dev/ttyUSB0
> From: 246tnt at
> To: gandguladze at
> CC: steve at; baseband-devel at
> Hi,
> > Thanks for help, but ModemManager doesn't seem to be an issue. Question:
> > Does "Cannot open serial device /dev/ttyUSB0" error mean that
> > it is unable to connect to my USB adapter or that there might not be a phone
> > connected on the other end of the adapter?
> It means it can't open the char device ... basically the call to
> open("/dev/ttyUSB0") failed somehow. nothing to do with the phone.
> Cheers,
>     Sylvain
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