FloppyDTV DVB-C mythtv

[mark271]

Has anyone been able to get a floppy dvb-c working on linux. I was using a beta copy of windows 7 but that had expired so decided to install linux for use on the HTPC. I checked and there where drivers created for linux.

I installed mythtv ubunt distro.

The problem is I can not get any channels.

My NTL area is bolton
I have tried creating a conf file for scan eg
C 267000000 6887000 NONE QAM64
C 268000000 6887000 NONE QAM64
C 252000000 6887000 NONE QAM64

If I run dvbscan with the above file i get the following error.
unable to query frontend status
if I run scan with the above file I get the following.
>>> tune to 25200000:inversion_auto:6887000:FEC_NONE:QAM_64
Warning >>> tuning failed!!!
It then continues displaying each entry in the file with the above.

I have gone into mythtv and setup the tv card and tried to do a scan. The details it asks for are frequency symbol rate. I have tried all different values for frequency and symbol rate.
eg
450000000 6887000
666750000 6887000

Can anyone help me set this up or am I going to have to go back to windows.

Thanks

[mark271]

Think i have found what the problem is the driver does not support the frequency rates or symbol rate i need to enter.

The linux device only accepts
frequency (470000000 - 866000000)
symbol rate (87000 - 6900000)

The symbol rate I need to enter is 6952000 as this is what I used on the windows setup.

Anyone know anything about changing linux drivers?

Thanks Mark

[hethemlrijk]

crappy drivers, they are only allowing you to access the UHF tv spectrum (c21-69). i suggest you modify the program, or attempt to use different drivers.

you want to scan from about 98.75mhz to 874.75mhz to ensure u get all the channels available, in NGTV areas there is about 50odd transponders.v and you need to use 6.952Msymbol/s

[mark271]

I have found the code I need to change I just now need to figure out how to compile and install a new linux kernel. Going to try and do this tomorrow. Never done anything on linux before and getting str8 into creating new kernels is probably not the easiest thing to do.

case FIREDTV_DVB_C:
fi->type = FE_QAM;
fi->frequency_min = 47000000;
fi->frequency_max = 866000000;
fi->frequency_stepsize = 62500;
fi->symbol_rate_min = 870000;
fi->symbol_rate_max = 6900000;
fi->caps = FE_CAN_INVERSION_AUTO |
FE_CAN_QAM_16 |
FE_CAN_QAM_32 |
FE_CAN_QAM_64 |
FE_CAN_QAM_128 |
FE_CAN_QAM_256 |

[hethemlrijk]

when scanning you need a 8mhz step and the above parameters