> @Marian: > Which kernel version, which application software did you use? > Could you tell us the value of fe->inversion? Tried on 2.6.13rc6 with CVS, and also on 2.6.9 with older dvb-kernel version (something near the last release driver). On the first tuning attempt, it tunes immediately, with inversion=0: dvb_frontend_autotune: DVB0 drift:0 bending:0 inversion:0 auto_step:0 auto_sub_step:0 started_auto_step:0 HAS LOCK When the lock is lost, it starts to zigzag and gets lock only when inversion transitions from 1 to 0: .... dvb_frontend_autotune: DVB1 drift:-13744 bending:0 inversion:0 auto_step:8 auto_sub_step:2 started_auto_step:0 dvb_frontend_autotune: DVB1 drift:-13744 bending:0 inversion:1 auto_step:8 auto_sub_step:3 started_auto_step:0 dvb_frontend_autotune: DVB1 drift:0 bending:0 inversion:1 auto_step:0 auto_sub_step:0 started_auto_step:0 dvb_frontend_autotune: DVB1 drift:0 bending:0 inversion:0 auto_step:0 auto_sub_step:1 started_auto_step:0 HAS LOCK When the original driver code is used, there are no inversion changes during retuning, so it never gets lock. With kind regards, M. -------------------------------------------------------------------------- ---- ---- ---- Marian Durkovic network manager ---- ---- ---- ---- Slovak Technical University Tel: +421 2 524 51 301 ---- ---- Computer Centre, Nam. Slobody 17 Fax: +421 2 524 94 351 ---- ---- 812 43 Bratislava, Slovak Republic E-mail/sip: md@xxxxxx ---- ---- ---- --------------------------------------------------------------------------