[00:03] <qwebirc96010> can dust/debris on a PCIe hvr card preventit from scanning channels or recording properly?
[01:40] <qwebirc96010> is it possible for a card to be successfully initialized in '/dev/dvb' with no errors on dmesg/syslog, and yet no capable of scanning any channels due to something faulty inside the ard?
[01:40] <qwebirc96010> *card
[01:41] <qwebirc96010> not*
[11:24] <x_martinb> merbanan: hello :) I've seen that you know a lot of details about mn88472 (and you've documented that knowledge here - thanks for that! https://linuxtv.org/wiki/index.php/Panasonic_MN88472)
[11:24] <x_martinb> I wonder if you know the differences to mn88473
[11:25] <x_martinb> (it seems that there are only a few differences, specifically I'm interested in statistics support for the mn88473)
[11:25] <crope> big differences
[11:25] <crope> some registers are same, but most are off by N
[11:26] <crope> x_martinb: if you can, just pressure I can get the documetation
[11:27] <crope> some vendors who are using that chipset are the one who should first pressure
[11:27] <x_martinb> what do you mean exactly with "pressure"? send someone an open letter?
[11:28] <crope> x_martinb: and it is merbanan who makes documentation :)
[11:28] <x_martinb> ah so we ask him nicely if he can add the docs for mn88473, just like he did for ..2? :)
[11:29] <crope> x_martinb: yes, just ask open linux drivers. problem is that developers has many times zero documetation unless device vendor helps
[11:30] <crope> very often the key for documentation / sdk is device vendor who uses those chips...
[11:31] <crope> I ask pretty often docs, but almost never got without any help from device vendors...
[11:33] <crope> x_martinb: actaully, last week I sent new request for the doc (I earlier tried with the help of eu division but failed)
[11:39] <x_martinb> crope: sorry, I have some connection issues today
[11:39] <x_martinb> just to clarify this: does merbanan have access to the docs / vendor sdk (so he can simply write the documentation) or do we have to ask someone else (who would that be) for docs / sdk?
[11:40] <merbzt> x_martinb: I tried to get dox a few years ago
[11:41] <merbzt> they even called me, but as I was not going to buy anything I didn't get any info from them
[11:41] <crope> merbzt: last week I sent request to that new entitny who owns the chips <name it>
[11:42] <merbzt> crope: yeah, I saw that to, lets hope they are better at releasing info
[11:42] <merbzt> or I saw that someone else bought them
[11:42] <crope> we talked with EU division "long" about those chips when they were Panasonic
[11:43] <x_martinb> merbzt: so it seems you found out all this by RE'ing the windows driver or analyzing usb captures?
[11:43] <merbzt> x_martinb: there is source code also
[11:44] <x_martinb> interesting, I did not search for mn88472 yet but I could not find anything for the mn88473
[11:44] <merbzt> crope: so you actually got hold of a person ? I only found a sales guy, he was not so helpful
[11:44] <x_martinb> (the latter one is the one I'm interested in, since I have no device with mn88472)
[11:44] <crope> look mn88473 driver - it is more simplifier than mn88472
[11:45] <merbzt> x_martinb: the mn88473 has some register offset, but probably works the same way as mn88472
[11:45] <crope> merbzt: yeh, got the persons who relly understood the issue.... but it was japan hq which denies
[11:46] <x_martinb> merbzt: ok, thanks
[11:46] <merbzt> ahh impressive that you even got so far
[11:47] <crope> merbzt: : ]
[11:47] <merbzt> x_martinb: what do you want to do ? what features are missing
[11:48] <x_martinb> merbzt: I was just interested in some statistics (signal strength, etc.)
[11:48] <x_martinb> so nothing critical
[11:49] <crope> x_martinb: I can likely measure, but it is too much effort to rev engineer so I dont....
[11:49] <merbzt> x_martinb: http://pastebin.com/vhEbKmAb
[11:49] <crope> u know, dumping the resiters against the signal generator....
[11:50] <x_martinb> crope: well, I was hoping to cheat this a bit: using DVB-T and packet capture on windows, then play around with the antenna so signal gets worse -> find out the registers and see if they are similar to ...2
[11:50] <merbzt> x_martinb: if you do the work I can guide you
[11:51] <merbzt> x_martinb: dvb-t should be doable, we can start with that
[11:52] <merbzt> dvb-t uses one reg per statistics
[11:52] <merbzt> dvb-t2 uses load and result mechanism
[11:52] <crope> merbzt: x_martinb signal stengt is just AGC gains. you can do it
[11:53] <merbzt> AGC gain should be easy
[11:54] <merbzt> https://linuxtv.org/wiki/index.php?title=Panasonic_MN88472#Signal_strength
[11:55] <x_martinb> merbzt: seems like the statistics are sorted by "implementation complexity" :)
[11:55] <crope> merbzt: thats most likely agc feedback :)
[11:56] <merbzt> just dump all registers with cable connected and unconnected
[11:56] <crope> x_martinb: yeh, trivial when you know reisters and scale
[11:56] <x_martinb> merbzt: let's say I start with signal strength: seems there is only one reg for DVB-C/T/T2. do you think registers are the same on ...3?
[11:56] <x_martinb> ah :)
[11:57] <crope> 3*255 register is pretty much o_O
[11:57] <x_martinb> that's an even easier test as the one I came up with :D
[11:57] <merbzt> it should be around -0x1D from 0x8E
[11:57] <crope> merbzt: you dont have the signal generator?
[11:57] <crope> merbzt: good work still!
[11:58] <x_martinb> merbzt: ok, I'll give this a go and let you know if I need further help
[11:58] <x_martinb> thanks for now!
[11:58] <merbzt> I have one but I never had the energy to get everything working
[11:58] <crope> merbzt: as I am too lazy to measure. I have one PCI generator I propably can give to you
[11:58] <merbzt> I also have a computer with a MN88472 MN88473 demod in
[11:59] <merbzt> if you sort out the agc feedback I'll arrange so you can test on it
[12:00] <merbzt> crope: like you I have far to much other stuff to do, but what PCI hardware is it you have ?
[12:01] <crope> dektec pci-xxx 
[12:01] <crope> without any licenses, just dvb-t and dvb-c
[12:02] <crope> I will give it to someone who really helps linuxtc
[12:03] <crope> just bought new signal genereator 3Gz, so I have now 1GHz gen for sell 
[12:04] <merbzt> x_martinb: anyway if you need any help just ping me or email, I'm sure you can get this working with some tinkering
[12:05] <merbzt> crope: gnuradio is quite capable now also, they have lots of modulators
[12:06] <crope> merbzt: y, but thats hw signal generator HP8657A
[12:06] <crope> I have now 2 generators, SME03 and 
[12:06] <merbzt> I have the budget version
[12:06] <crope> I have now 2 generators, SME03 and HP8657A
[12:07] <crope> SME03 with all those GSM and tetra options none wants, old nokia
[12:07] <merbzt> http://www.ebay.com/itm/172152204149?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
[12:09] <crope> good option if better not avalaible
[12:10] <merbzt> I used it to test the r820t tuner, > 1500MHz you get nothing even if the tuner can lock on the test hardware
[12:11] <crope> but how to genrate acutal signal?
[12:11] <crope> aah, sorry stubid q
[12:12] <crope> merbzt: is it working? lookin one hw with my prof equip it is off to 100kHz ion 1500
[12:14] <merbzt> I wanted to see if there was a slightest chance in hell if I could get the rtl-sdr to receive 1900MHz
[12:14] <merbzt> I got the tuner to lock at 1893MHz
[12:14] <merbzt> but the spectrum was dead silence
[12:15] <merbzt> so I checked how low I had to go and it was around 1500-1600MHz before I picked up the adf4350 generated signal
[12:16] <crope> not sure what my stick locks, but 1500e there is currently almost 0 sinal  (not sure how much I have to put tx in able to see it)
[12:16] <merbzt> I had the cable connected directly through
[12:17] <crope> fact the chip is hard to configure....
[12:18] <merbzt> prog has written a "better" driver for the airspy
[12:19] <crope> havent looked that
[12:19] <merbzt> but I doubt there is much to be done for the tv use case of the Astrometa sticks
[12:20] <crope> but in any case kernel driver should support dvb-t and dvb-c to it is not easy
[12:22] <merbzt> as long as you have a good signal it seems to work fine now
[12:23] <merbzt> the only issue I have heard is when people use strange frequencies
[12:23] <merbzt> for dvb-c
[12:23] <merbzt> and dvb-c/annex c is not tested/supported
[12:23] <merbzt> same with 5MHz/1.7MHz dvb-t2
[12:23] <crope> I think you break the high freq dvb-c :DDDD
[12:24] <merbzt> yeah maybe need to switch the antenna
[12:24] <merbzt> from cable to air
[12:25] <crope> fortunately it is not regression as that patch went in that early (before demod)
[12:25] <merbzt> but it is hard without a proper way to test it
[12:25] <crope> yep
[12:26] <crope> and I am too lazy... :)
[12:26] <crope> I have too many things to test, so I am not able to test all
[12:27] <merbzt> yeah, you are too lazy, only wrote like half of the drivers in recent years
[12:27] <crope> tuner are evil
[12:27] <crope> +s
[12:28] <merbzt> I still have the dibcom and connexant mn88472 dongles to write support for
[12:28] <crope> most worst are DVB-S, I dont have any real signals
[12:28] <merbzt> modulate your own
[12:29] <merbzt> I think an rpi can do that now
[12:29] <crope> earlier I has remote computer on pctv on .de but not anymore :S
[12:29] <merbzt> I have access to 10 satellites
[12:29] <crope> I have only generator....
[12:30] <merbzt> I can give you access if you need
[12:30] <crope> what kind of hw? Can I switch USB on the fly?
[12:30] <crope> sure I would like too
[12:31] <merbzt> well what kind of hardware do you need ?
[12:31] <crope> pctv there was many satellites and usb power bar I could change devices
[12:31] <crope> currently not any...
[12:32] <merbzt> so you want to be able to enable/disable usb ports ? with connected hardware to
[12:33] <crope> because those devices were connected to usb ports
[12:33] <crope> so I was able to reboot computer, reconnect USB
[12:33] <crope> select satellite using diseq
[12:34] <merbzt> need to find that kind of usb hub then
[12:34] <crope> hub that could be remotely controllrd
[12:35] <crope> but really, I am not going to work with DVB-S anymore
[12:36] <crope> generatot is enough
[12:38] <merbzt> yeah, it is so much easier to work with everything locally
[12:38] <merbzt> software controllable hub $300.00
[12:39] <merbzt> a little bit to much