On Wed, Jan 5, 2011 at 2:58 PM, Tzafrir Cohen <tzaf...@cohens.org.il> wrote:
> On Wed, Jan 05, 2011 at 02:25:39PM +0200, Erez D wrote: > > HI > > > > I have 2 identical USB to Serial dongles > > > > If I connect them to an XP box, i get assigned a COM port according to > the > > usb port i connected to > > If I connect them to a Linux Box, i get assigned a ttyUSBn port according > to > > the order i connected them > > > > > > as i am not always aware of the order i connect them, and it is not > uniquly > > defined if the are both connected at boot time, > > I get the device name swapped every reboot. > > > > > > is there a way to assign a constant device name according to the USB port > it > > is connected to and not via the order it is connected > > (under linux of course) > > Use the symlinks under /dev/serial/by-id rather than /dev/ttyUSBn > directly. > > The problem is that the dongles are identical, so /dev/serial/by-id has only one file which links to the last one inserted. /dev/serial/by-path has different links, however they are not consistent either, and change every time i remove and reinsert the dongle thanks, erez. > Or figure out how they are generated from the udev rules, and make your own > custom constant device names. At first glance this is > /lib/udev/rules.d/60-persistent-serial.rules on my system. > > -- > Tzafrir Cohen | tzaf...@jabber.org | VIM is > http://tzafrir.org.il | | a Mutt's > tzaf...@cohens.org.il | | best > tzaf...@debian.org | | friend > > _______________________________________________ > Linux-il mailing list > Linux-il@cs.huji.ac.il > http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il >
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