[mythtv-users] DVB-T USB problems

[Josu Lazkano]

Hello list, I have dedicated backend with 4 DVB devices to feed 2 frontends.

This is my DVB adapters:

2xDVB-S2 = 1xUSB and 1xPCIe
2xDVB-T = both USB

I never had problems with DVB-S2, but I have lots of problems with the
DVB-T USB devices, I have lots of them:

KWorld PlusTV Dual DVB-T Stick (DVB-T 399U)
Pinnacle PCTV 72e
Hauppauge WinTV-MiniStick HD
Hauppauge Nova-T Stick
Hauppauge WinTV Duet HD Stick
Avermedia Volar Black HD (A850)
WideView WT-220U PenType Receiver

With all of them I have problem, I don't know if this related to the
driver, firmware, hardware or other thing.

When I add them on the backend, sometimes they work well for 10-15
days. But finally the devices can not lock the channel.

Now I have this devices:

# lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 2040:7070 Hauppauge Nova-T Stick 3
Bus 001 Device 004: ID 2040:c000 Hauppauge Windham

And this is the error:

# tail -n 5 /var/log/syslog
Jan 16 18:12:15 server kernel: [103447.308517] smsusb_onresponse:
line: 118: error, urb status -71, 0 bytes
Jan 16 18:12:15 server kernel: [103447.318018] smsusb_onresponse:
line: 118: error, urb status -71, 0 bytes
Jan 16 18:12:15 server kernel: [103447.327888] smsusb_onresponse:
line: 118: error, urb status -71, 0 bytes
Jan 16 18:12:15 server kernel: [103447.337767] smsusb_onresponse:
line: 118: error, urb status -71, 0 bytes
Jan 16 18:12:15 server kernel: [103447.346262] smsusb_onresponse:
line: 118: error, urb status -71, 0 bytes

With other devices has similar problems, I am connected remotely and I
can not change the device, I will post later the other device errors.

My system is a Debian Wheezy (3.2.0-4-amd64 kernel) and the backend is
a HP ProLiant MicroServer.

Do you have any problems with this kind of devices? Do yo recommend to
buy a DVB-T PCI device?

I will appreciate your help.

Kind regards.

--
Josu Lazkano