The gpsd program, and its bundled 99-gpsd-usb.rules file, are handling udev "add" events correctly for me. However, for some reason, the "remove" events are not being matched correctly by the rules file. After two suspend/resume cycles with a GPS device left plugged in, this problem causes gpsd to become inoperable. This problem was seen with gpsd-2.39-r1, udev-146-r1, and a kernel built from gentoo-sources-2.6.31-r6. The working "add" line from the Gentoo rules file goes like this: ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", SUBSYSTEM=="tty", ACTION=="add", KERNEL=="ttyUSB[0-9]*", SYMLINK="gps%n", RUN+="/etc/hotplug/usb/gpsd.hotplug add $root/%k" The non-working "remove" line is very similar: ATTRS{idVendor}=="067b", ATTRS{idProduct}=="2303", SUBSYSTEM=="tty", ACTION=="remove", KERNEL=="ttyUSB[0-9]*", RUN+="/etc/hotplug/usb/gpsd.hotplug remove $root/%k" The following remove line seems to do the job: ENV{ID_VENDOR_ID}=="067b", ENV{ID_MODEL_ID}=="2303", SUBSYSTEM=="tty", ACTION=="remove", KERNEL=="ttyUSB[0-9]*", RUN+="/etc/hotplug/usb/gpsd.hotplug remove $root/%k"
Fixed in portage. Thanks; I just love how udev and kernel behavior changes over time with respect to custom rules...
