On Sat, May 07, 2005 at 06:31:19PM +0100, Allan Guild wrote: > I'm having problems getting an old TT (L64781 frontend) based Nova-T > working with the current DVB drivers and a 2.6.11 kernel. > > The video and audio hangs for a few seconds once or twice a minute and > the debug messages in /var/log/syslog report "TS continuity errors". > > This card works perfectly with the DVB drivers in a Mandrake 9.2 stock > kernel (2.4.22). I have no idea what Mandrake has in their 2.4 kernels. Do you have more information? > I am getting the same problems described above using a snapshot from > before the frontend refactoring (here I used the same grundig frontend > as with 2.4.22 kernel) and a 2.6.8 kernel. > > I also have a connexant based Nova-T that is working fine under both my > 2.6.x setups (I believe that this card requires a 2.6 kernel). > > >From browsing the archives, I noticed that similar problems with a > tda10021 frontend were fixed with a register change. I'm under the > impression that this fix is not relevant for my setup, but please > correct me if I'm wrong. > > I'm more than willing to try different things to try and get this > working, but I don't really know where to start. You could compare the old and new drivers for differences in register settings (both initial and what set_frontend() and grundig_29504_401_pll_set() in budget.c does) and timing. A good start might be to load the driver (dvb-core) with frontend_debug=1 and see what it does. Then maybe look at l64781_get_tune_settings() and play with the values. I would try to set step_size and max_drift to 0 to disable zig-zag (not that usefule IMHO for dvb-t) and maybe increase min_delay_ms. http://www.linuxtv.org/mailinglists/linux-dvb/2004/03-2004/msg00288.html Please report your results. HTH, Johannes
