9 replies to this topic

[peba]

I'm using a sundtek-dvb-c and a hauppauge-wintv-nova-td (it's a dvb-t twin-tuner) in addition to the internal tuner on my 800se.
Both usb-tuner-sticks are working fine, but I can see only 3 of 4 tuners at the same time.
It depends on the order starting the tuners:


1. Starting firstly the sundtek and then the hauppauge:
cat /proc/bus/nim_sockets·
NIM Socket 0:

Type: DVB-C

Name: Philips CU1216Mk3

Has_Outputs: yes

Frontend_Device: 0

I2C_Device: 2

NIM Socket 1:

Type: DVB-C

Name: Sundtek MediaTV Digital Home (U

Has_Outputs: no

Frontend_Device: 1

NIM Socket 2:

Type: DVB-T

Name: NovaT 500Stick

Has_Outputs: no

Frontend_Device: 2

2. Starting firstly the hauppauge and then the sundtek:
cat /proc/bus/nim_sockets·
NIM Socket 0:

Type: DVB-C

Name: Philips CU1216Mk3

Has_Outputs: yes

Frontend_Device: 0

I2C_Device: 2

NIM Socket 1:

Type: DVB-T

Name: NovaT 500Stick

Has_Outputs: no

Frontend_Device: 1

NIM Socket 2:

Type: DVB-T

Name: NovaT 500Stick

Has_Outputs: no

Frontend_Device: 2

Maybe the problem is that I need three /dev/misc/vtuner* devices, but mdev creates only two.
ls -l /dev/misc
crw-rw---- 1 root root 10, 60 Dec 4 16:45 vtuner0
crw-rw---- 1 root root 10, 59 Dec 4 16:45 vtuner1

I posted this issue already in the german forum, but didn't get any help.

Any idea?

[pieterg]

If you have only two vtuner devicenodes, the limit is indeed 2.
mdev only creates nodes for devices which exists. Even if you would manually add a 3rd one, it would not work (because the driver does not provide a 3rd device)

[peba]

Thanks for the answer, but now I'm confused.

mdev creates always 2 vtuner nodes - even if none of the usb-tuners is plugged in.
So I don't understand the statement "mdev only creates nodes for devices which exists".

[pieterg]

"mdev only creates nodes for devices which exists".

with devices I meant device instances in the driver.
Not actual hardware devices.
The stuff you see in /sys/devices

[peba]

That means the driver providing the /dev/misc/vtuner interfaces has hardcoded to support only two instances?

[daddelfalk]

Hi,

right, DMM-Drivers only have build-in support for max of two vTuners.

[peba]

Maybe it's a very stupid question, but I do not understand why DMM-drivers are mentioned in the last post?
I thought the openpli-image is completely based on open-source.

Can anybody give me some explanation on this topic?

[Gennar1]

The OpenPli image is completely opensource, but the low-level device drivers (for the Broadcom SoC and the DVB-S2 tuners) are closed source and are provided by the manufacturer (DMM, Vuplus, ET).

The closed source drivers are the basic kernel modules that you can see with the command lsmod (this is from my ET9000):

dvb				  4903005  15
modloader2			 33264  1 dvb
modloader			  22329  0
tpm					 7873  3 dvb,modloader2,modloader

[gorath]

Can I ask something else? The Hauppauge Nova TD is seen by Dreambox as two tuners separately?

[peba]

Yes, I can see both tuners separately when starting firstly the hauppauge. Look on the first entry in this thread above.
And both can be used (e. g. for simultaneously recording movies on two different transponders).