On 05/15/2013 10:52 AM, kedari appana wrote: > if i try without triple sampling on > and just this command #./canconfig can0 bitrate 100000 ctrlmode loopback on > > 1c > can0 bitrate: 100000, sample-point: 0.875 > RTNETLINK answers: Operation not supported > can0: failed to set ctrlmode > the same error i am getting what was the issue. Does your hardware/driver support loopback mode? Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |