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George Andguladze gandguladze at hotmail.comHi Sylvain, thanks for that, already getting somewhere. Here are last several lines from strace output: open("/dev/ttyUSB0", O_RDWR|O_NOCTTY) = 3 14:21:07.712932 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0 14:21:07.713657 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0 14:21:07.713847 ioctl(3, SNDCTL_TMR_START or TCSETS, {B115200 -opost -isig -icanon -echo ...}) = 0 14:21:07.715039 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 -opost -isig -icanon -echo ...}) = 0 14:21:07.715261 ioctl(3, TIOCMBIS, [TIOCM_DTR|TIOCM_RTS]) = -1 EPIPE (Broken pipe) 14:21:07.717054 close(3) = 0 14:21:07.720986 write(2, "Cannot open serial device /dev/t"..., 39Cannot open serial device /dev/ttyUSB0 I got -1 at ioctl(3, TIOCMBIS, [TIOCM_DTR|TIOCM_RTS]) (Broken pipe). But it was actually able to open "/dev/ttyUSB0" (returned 3). Have to find out what -1 means at this point. > Date: Tue, 11 Jun 2013 11:21:23 +0200 > Subject: Re: Cannot open serial device /dev/ttyUSB0 > From: 246tnt at gmail.com > To: gandguladze at hotmail.com > CC: baseband-devel at lists.osmocom.org > > On Tue, Jun 11, 2013 at 10:44 AM, George Andguladze > <gandguladze at hotmail.com> wrote: > > 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) > > Try to strace it. > > strace osmocon .... > > > Cheers, > > Sylvain > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/baseband-devel/attachments/20130611/f825ca65/attachment.htm>