Hi, On Wed, 3 Mar 2010 15:17:18 +0100 Johan Hovold <jhovold@xxxxxxxxx> wrote: > On Wed, Mar 03, 2010 at 11:47:05AM +0100, peter@xxxxxxxx wrote: > > Quoting Greg KH <greg@xxxxxxxxx>: > > > On Mon, Mar 01, 2010 at 07:07:00PM +0100, Peter Feuerer wrote: > > >> I connected two pls2302 usb-serial converters to two different > > >> usb-ports of my machine and connected them with a rs232-nullmodem > > >> cable to each other. > > >> > > >> Terminal1: > > >> cat /dev/ttyUSB1 > > >> > > >> Terminal2: > > >> while true; do echo 123456789012345678901234567890 > /dev/ttyUSB0 ; done > > > > > > cat and echo are known to not work well with usb to serial devices. Can > > > you duplicate this with a "real" tty program like minicom or something > > > else? > > > > I will try to set up a test use-case which uses kermit. > > > > But there is a calltrace in kernel log when using cat & echo, so > > something in the driver went wrong. > > Thus there is a bug which can be reproduced and it should be fixed, > > don't you agree? > > Not necessarily. The warning you attached to your first post is a false > one (it has been fixed in 2.6.33) and is not directly related to the > problem you describe. > Are udev rules around which attach gpsd to the usb to serial adapter? That might interfere. I had problems with pl2302 adaptors due to that reason. I wondered why stty -F /dev/ttyUSBx showed different things than on earlier calls. Greetings Andreas Kemnade
Attachment:
signature.asc
Description: PGP signature
