Problem NPVR compared to DVBLink with DVB-C

[eurojojo]

Hi,

For many years I use NextPVR with Technotrend C-1501 DVB-C cards. I posted about this before on this forum. I worked perfectly.

Until last Sunday. My network provider (KPN) is making changes, which can all be overcome, except some change they made last Sunday. NPVR can not find the channels anymore, except when I run DVBLink after a reboot of the PC. So, DVBLink apparently does something that NPVR does not. DVBLink works every time. NPVR now only after DVBLink. Before I found this I tried everything, installing and removing three generations of drivers, removing the DVB-C-card and putting it back, changing the chipset driver to reset the motherboard. I use Windows 7, 32-bit.

I will explain.

The tuning INI that I made years ago is:

[INDENT][CABTYPE]
1=Nederland
2=Glashart (that used to be the network name years ago)

[DVB]
0=16
1=C,304000,6875,QAM64,8
2=C,312000,6875,QAM64,8
3=C,320000,6875,QAM64,8
etc.[/INDENT]

Currently that does not seem to be enough to find the channels. There are none. And when I want to record with the channels that are in place the tuner can not lock the channel and it records a file of 0 bytes.

Channels look like this:

[INDENT]<Channels Type="DVB-C">
<Channel>
<Name>Ned 1</Name>
<Number>1</Number>
<ServiceType>25</ServiceType>
<tuning>
<type>DVB-C</type>
<locator>
<frequency>368000</frequency>
<bandwidth>8</bandwidth>
<symbol_rate>6875</symbol_rate>
<modulation>QAM64</modulation>
</locator>
<service_id>9101</service_id>
<tsid>9</tsid>
<onid>3300</onid>
<service_type>25</service_type>
</tuning>
<EPGSource>XMLTV</EPGSource>
<epg>
<source>XMLTV</source>
<file>C:\Users\Public\XMLTV\guide.xml</file>
<mapping_id>Ned1</mapping_id>
<mapping_name>Ned 1</mapping_name>
</epg>
</Channel>[/INDENT]

When using the DVBLink-software beforehand the channel list is not changed, and the network ID is still 3300.

After the PC needs rebooting for something, I need to go to the DVBLink webinterface, go to source, "Select channel search mode, fast", enter frequency 304000 and speed 6875 and click on "Search networks". It will find "KPN-ITNS WAH (ID: 3300)" and I let it scan for channels. That is enough. After that NPVR can also find channels and record programs without further modification to the configuration.

So, apparently DVBLink does something concerning the network ID on my system that NPVR does not.

When I stop the NPVR service, and restart again, the trick holds. So, I guess DVBLink changes something in the Windows configuration that sticks until reboot. Something NPVR can use.

I saw on the forum other people that mention NPVR can not find channels, but I believe these people encounter this problem when installing and move on to another software if NPVR does not work for them. I am a happy user since GBPVR and DVB user since 2011 with this same setup and only got this trouble last Sunday.

I think it is worthwhile to find the solution, also for those other people. What can I do further to track the key to success? :confused:

[sub]

See if this DVB-C patch makes any difference:

http://forums.nextpvr.com/showthread.php...post487732

[eurojojo]

See if this DVB-C patch makes any difference:

http://forums.nextpvr.com/showthread.php...post487732

Wow! Indeed that works. I did check the forum beforehand, and did not see this solution.

Also, apparently it has nothing to do with my provider, but everything that I rebooted the system last Sunday for the first time after installing the update. Should have thought about that!

Thanx, Sub.

[sub]

Great!