On Mon, Jul 12, 2010 at 10:14 PM, Jack O'Quin wrote: > On Mon, Jul 12, 2010 at 4:59 PM, Kim Houck wrote: > >> I like the idea of a 'retries' parameter, either defaulted to 1 or 2 or >> to 0. > > I created a ticket for this problem (#4251)... > >  https://code.ros.org/trac/ros-pkg/ticket/4251 On further consideration, I decided Eric was right. There is little risk in unconditionally retrying the open a couple of times. For cameras that are already working it will have no effect. For those inclined to hang when opened with invalid parameters, the open will succeed and the camera will hang, just as before. Since this is a simple change and it does no harm with my unit test cameras, I committed the change to SVN in the camera_drivers trunk. There is also a patch attached to ticket #4251. None of my cameras require retries, but they tolerate them just fine. @Kim: Would you please: (1) check out https://code.ros.org/svn/ros-pkg/stacks/camera_drivers/trunk (2) put it in front of cturtle in your $ROS_PACKAGE_PATH (3) rosmake camera1394 (4) test it with your Sony DFW-X710 If you are using cturtle from svn and not binaries, it might be simpler to just patch your copy of the driver and rebuild. Either approach should work. If you have questions, please ask. If this fix works for you, we can close the ticket and release it in the next cturtle update. Thanks for helping, --  joq