On Samstag, 6. April 2013 10:37:52 you wrote: > Em Sat, 06 Apr 2013 12:20:41 +0200 > > Hans-Peter Jansen <hpj@xxxxxxxxx> escreveu: > > Dear Mauro, > > > > first of all, thank you for providing a proper fix that quickly. > > > > On Freitag, 5. April 2013 13:18:54 Mauro Carvalho Chehab wrote: > > > Em Fri, 05 Apr 2013 13:25:01 +0100 > > > > > > Adam Sampson <ats@xxxxxxxxx> escreveu: > > > > Hans-Peter Jansen <hpj@xxxxxxxxx> writes: > > > > > In one of my systems, I've used a > > > > > Hauppauge Nova-S-Plus DVB-S card successfully, but after a system > > > > > upgrade to openSUSE 12.2, it cannot tune in all but one channel. > > > > > > > > [...] > > > > > > > > > initial transponder 12551500 V 22000000 5 > > > > > > > > > >>>> tune to: 12551:v:0:22000 > > > > > > > > > > DVB-S IF freq is 1951500 > > > > > WARNING: >>> tuning failed!!! > > > > > > > > I suspect you might be running into this problem: > > > > https://bugzilla.kernel.org/show_bug.cgi?id=9476 > > > > > > > > The bug title is misleading -- the problem is actually that the card > > > > doesn't get configured properly to send the 22kHz tone for high-band > > > > transponders, like the one in your error above. > > > > > > > > Applying this patch makes my Nova-S-Plus work with recent kernels: > > > > https://bugzilla.kernel.org/attachment.cgi?id=21905&action=edit > > > > > > Applying that patch would break support for all other devices with > > > isl6421. > > > > > > Could you please test the enclosed patch? It allows the bridge > > > driver to tell if the set_tone should be overrided by isl6421 or > > > not. The code only changes it for Hauppauge model 92001. > > > > Unfortunately, it appears to be more problematic. While the fix allows to > > scan the channel list, it is not complete (in another setup at the same > > dish (via multiswitch), vdrs channel list has about 1600 channels, while > > scan does collect 1138 only. > > > > More importantly, a single channel (arte) is received with 0 BER and a S/N > > ratio of 99%, while all other channels produce more BER, eg. "Das Erste" > > with about 320 BER (SNR 99%, a few artifacts/distortions occasionally), > > "ZDF" about 6400 BER, (SNR drops down to 75%, constant distortions, and > > many channels doesn't produce anything beyond distortions with a video > > stream below 0.3 MBit/s and about 160000 BER. (measured using vdr femon > > plugin v. 1.6.7) > > > > So, still no cigar, sorry. > > > > I've tested both patches, just to be sure, with the same result. I had to > > relocate and refresh yours in order to apply it to 3.4, since the paths > > changed, result attached. > > > > > If it works, please answer this email with a: > > > Tested-by: your name <your@email> > > > > > > For me to add it when merging the patch upstream. > > > > > > Regards, > > > Mauro. > > > > It looks like the idea is sound, but the logic is still missing something > > that prevents it from tuning most channels properly. > > Well, what it is expected from this patch is to be able of seeing > channels with H and V polarization. Nothing more, nothing less. Okay. Yes, I do. > From what I understood, you're now seeing more than just one channel, > so, it is likely part of the fix, right? Yes. > If are there any other issues, then it it would require other fixes, > likely at cx24123 frontend. My guess is that it could be due to some > precision loss maybe at cx24123_set_symbolrate(). It helps if you could > check if the channels that are more problematic have a higher or a > lower bit rate. It probably makes sense to change the code there to > use u64 and asm/div64.h, in order to allow the calculus to have more > precision. I'll try to write such patch. ..that I'm testing right now. Build is on the way. You wrote and published the fix in less then 8 minutes. Wow, unbelievable. Since I use a rpm build of an otherwise unchanged distribution kernel, the build will take slightly longer, unfortunately.. > With regards to this fix, could you please confirm that you can > now get channels with both polarizations? Yes, confirmed. Tested-by: Hans-Peter Jansen <hpj@xxxxxxxxx> Thanks Mauro for the great support. Cheers, Pete -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
