RE: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

RE: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[M. Fletcher]

I am trying to setup a Compro U680F USB DVB-T adaptor in Ubuntu 12.04
(kernel
3.2.0-29-generic).

The compro device ID is given (lsusb) as 185b:0680. The following page
suggests
this device is supported by the RT2832U driver:
http://www.dfragos.me/2011/11/installation-of-the-rt2832u-driver-in-linux/

I successfully built the v4l-dvb package from source following this how to,
using the "Basic Approach": 
http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_D
evice_Drivers

After restarting the system the device does not appear to be working. The
output from "lsmod | grep dvb" is as follows:

root@DCTbox:/home/dct# lsmod | grep dvb
dvb_usb                32369  0 
dvb_core              110590  1 dvb_usb
rc_core                26343  1 dvb_usb


If I unplug the device and plug back in, I get the following from "dmesg |
tail":

root@DCTbox:/home/dct# dmesg | tail -n 27
[  160.015155] usb 5-2: new high-speed USB device number 4 using xhci_hcd
[  160.051152] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
desc says 0 microframes
[  160.133825] WARNING: You are using an experimental version of the media
stack.
[  160.133826]     As the driver is backported to an older kernel, it
doesn't
offer
[  160.133827]     enough quality for its usage in production.
[  160.133828]     Use it with care.
[  160.133829] Latest git patches (needed if you report a bug to
linux-media@vger.kernel.org):
[  160.133830]     9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
export b2c2_flexcop_debug symbol
[  160.133832]     88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
Makefile rules
[  160.133833]     893430558e5bf116179915de2d3d119ad25c01cf [media]
cx23885-cards: fix netup card default revision
[  160.144374] WARNING: You are using an experimental version of the media
stack.
[  160.144376]     As the driver is backported to an older kernel, it
doesn't
offer
[  160.144377]     enough quality for its usage in production.
[  160.144378]     Use it with care.
[  160.144379] Latest git patches (needed if you report a bug to
linux-media@vger.kernel.org):
[  160.144380]     9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
export b2c2_flexcop_debug symbol
[  160.144381]     88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
Makefile rules
[  160.144383]     893430558e5bf116179915de2d3d119ad25c01cf [media]
cx23885-cards: fix netup card default revision
[  160.173311] dvb_usb_rtl2832u: disagrees about version of symbol
dvb_usb_device_init
[  160.173315] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
-22)
[  392.860811] dvb_usb_rtl2832u: disagrees about version of symbol
dvb_usb_device_init
[  392.860815] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
-22)
[ 1282.328055] usb 5-2: USB disconnect, device number 4
[ 1288.697208] usb 5-2: new high-speed USB device number 5 using xhci_hcd
[ 1288.732785] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
desc says 0 microframes
[ 1288.747585] dvb_usb_rtl2832u: disagrees about version of symbol
dvb_usb_device_init
[ 1288.747589] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
-22)



If I attempt to load the driver manually I get the following error message:

root@DCTbox:/home/dct# modprobe dvb_usb_rtl2832u
FATAL: Error inserting dvb_usb_rtl2832u
(/lib/modules/3.2.0-29-generic/kernel/drivers/media/dvb/dvb-usb/dvb-usb-rtl2
832u.ko):
Invalid argument



Any advice on how to get this device working successfully would be greatly
appreciated.

Kind regards,
Marc

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[Antti Palosaari]

On 08/21/2012 05:24 PM, M. Fletcher wrote:
> I am trying to setup a Compro U680F USB DVB-T adaptor in Ubuntu 12.04
> (kernel
> 3.2.0-29-generic).
>
> The compro device ID is given (lsusb) as 185b:0680. The following page
> suggests
> this device is supported by the RT2832U driver:
> http://www.dfragos.me/2011/11/installation-of-the-rt2832u-driver-in-linux/
>
> I successfully built the v4l-dvb package from source following this how to,
> using the "Basic Approach":
> http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_D
> evice_Drivers
>
> After restarting the system the device does not appear to be working. The
> output from "lsmod | grep dvb" is as follows:
>
> root@DCTbox:/home/dct# lsmod | grep dvb
> dvb_usb                32369  0
> dvb_core              110590  1 dvb_usb
> rc_core                26343  1 dvb_usb
>
>
> If I unplug the device and plug back in, I get the following from "dmesg |
> tail":
>
> root@DCTbox:/home/dct# dmesg | tail -n 27
> [  160.015155] usb 5-2: new high-speed USB device number 4 using xhci_hcd
> [  160.051152] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
> desc says 0 microframes
> [  160.133825] WARNING: You are using an experimental version of the media
> stack.
> [  160.133826]     As the driver is backported to an older kernel, it
> doesn't
> offer
> [  160.133827]     enough quality for its usage in production.
> [  160.133828]     Use it with care.
> [  160.133829] Latest git patches (needed if you report a bug to
> linux-media@vger.kernel.org):
> [  160.133830]     9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
> export b2c2_flexcop_debug symbol
> [  160.133832]     88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
> Makefile rules
> [  160.133833]     893430558e5bf116179915de2d3d119ad25c01cf [media]
> cx23885-cards: fix netup card default revision
> [  160.144374] WARNING: You are using an experimental version of the media
> stack.
> [  160.144376]     As the driver is backported to an older kernel, it
> doesn't
> offer
> [  160.144377]     enough quality for its usage in production.
> [  160.144378]     Use it with care.
> [  160.144379] Latest git patches (needed if you report a bug to
> linux-media@vger.kernel.org):
> [  160.144380]     9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
> export b2c2_flexcop_debug symbol
> [  160.144381]     88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
> Makefile rules
> [  160.144383]     893430558e5bf116179915de2d3d119ad25c01cf [media]
> cx23885-cards: fix netup card default revision
> [  160.173311] dvb_usb_rtl2832u: disagrees about version of symbol
> dvb_usb_device_init
> [  160.173315] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
> -22)
> [  392.860811] dvb_usb_rtl2832u: disagrees about version of symbol
> dvb_usb_device_init
> [  392.860815] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
> -22)
> [ 1282.328055] usb 5-2: USB disconnect, device number 4
> [ 1288.697208] usb 5-2: new high-speed USB device number 5 using xhci_hcd
> [ 1288.732785] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
> desc says 0 microframes
> [ 1288.747585] dvb_usb_rtl2832u: disagrees about version of symbol
> dvb_usb_device_init
> [ 1288.747589] dvb_usb_rtl2832u: Unknown symbol dvb_usb_device_init (err
> -22)
>
>
>
> If I attempt to load the driver manually I get the following error message:
>
> root@DCTbox:/home/dct# modprobe dvb_usb_rtl2832u
> FATAL: Error inserting dvb_usb_rtl2832u
> (/lib/modules/3.2.0-29-generic/kernel/drivers/media/dvb/dvb-usb/dvb-usb-rtl2
> 832u.ko):
> Invalid argument
>
>
>
> Any advice on how to get this device working successfully would be greatly
> appreciated.
>
> Kind regards,
> Marc

There is no driver named dvb_usb_rtl2832u. It is dvb_usb_rtl28xxu. I 
don't know how in the world you could have such driver. It is not from 
the LinuxTV.org / Kernel as you argue.

regards
Antti

-- 
http://palosaari.fi/

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[poma]

On 08/21/2012 07:54 PM, M. Fletcher wrote:
> I appreciate all of your help. 
> 
> I found the following http://sdr.osmocom.org/trac/wiki/rtl-sdr which seems
> to support the E4000 on the Compro U680F. Could that driver be incorporated
> with the RTL83xxu from V4L-DVB?
> 
> Regards,
> Marc
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-media" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Fletcher, 'dvb_usb_rtl2832[u]' is original(patched) Realtek "Out Of
Tree" driver.
https://github.com/tmair/DVB-Realtek-RTL2832U-2.2.2-10tuner-mod_kernel-3.0.0#readme
Although this one have tuner issue(irregularly), too ;)
WARNING: filter timeout pid 0x00\x02…
…
'dvb-usb-rtl28xxu' and 'rtl2832' are "In House" drivers/modules.
http://git.linuxtv.org/media_build.git

FMTTM,
poma

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[Antti Palosaari]

On 08/21/2012 08:54 PM, M. Fletcher wrote:
> I appreciate all of your help.
>
> I found the following http://sdr.osmocom.org/trac/wiki/rtl-sdr which seems
> to support the E4000 on the Compro U680F. Could that driver be incorporated
> with the RTL83xxu from V4L-DVB?
>
> Regards,
> Marc
>

It is userspace driver, kernel drivers are little bit different. It is 
not possible to use as it is.

regards
Antti


-- 
http://palosaari.fi/

RE: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[M. Fletcher]

I appreciate all of your help. 

I found the following http://sdr.osmocom.org/trac/wiki/rtl-sdr which seems
to support the E4000 on the Compro U680F. Could that driver be incorporated
with the RTL83xxu from V4L-DVB?

Regards,
Marc

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[Antti Palosaari]

On 08/21/2012 07:13 PM, M. Fletcher wrote:
>> Open the rtl28xxu.c file and find line:
>> 	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK, replace
> it:
>> 	{ DVB_USB_DEVICE(0x185b, 0x0680,
>
> Line changed as follows:
>
> //{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
> { DVB_USB_DEVICE(0x185b, 0x0680,
> 	&rtl2832u_props, "NOXON DAB/DAB+ USB dongle", NULL) },
>
>> Compile and install.
>
> Successful.
>
>> Enable debugs:
>> #modprobe dvb_usb_rtl28xxu; echo -n 'module dvb_usb_rtl28xxu +p' >
> /sys/kernel/debug/dynamic_debug/control
>
> Executing this entire line produced:
> bash: /sys/kernel/debug/dynamic_debug/control: No such file or directory
>
> Succesfully executed:
> modprobe dvb_usb_rtl28xxu
>
> Module loaded:
> root@DCTbox:/# lsmod | grep dvb
> dvb_usb_rtl28xxu       18522  0
> dvb_usbv2              23726  1 dvb_usb_rtl28xxu
> rc_core                26343  2 dvb_usb_rtl28xxu,dvb_usbv2
> rtl2830                18340  1 dvb_usb_rtl28xxu
> dvb_core              110590  2 dvb_usbv2,rtl2830
>
>> plug stick in and look what dmesg says. With a good luck there is supported
> RF-tuner and it works, but most likely there is some RF-tuner which is >not
> supported and it does not work.
>
> root@DCTbox:/home/dct# dmesg
> [  136.285497] usb 5-2: new high-speed USB device number 4 using xhci_hcd
> [  136.319609] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
> desc says 0 microframes
> [  136.367747] WARNING: You are using an experimental version of the media
> stack.
> [  136.367748] 	As the driver is backported to an older kernel, it doesn't
> offer
> [  136.367749] 	enough quality for its usage in production.
> [  136.367750] 	Use it with care.
> [  136.367750] Latest git patches (needed if you report a bug to
> linux-media@vger.kernel.org):
> [  136.367751] 	9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
> export b2c2_flexcop_debug symbol
> [  136.367752] 	88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
> Makefile rules
> [  136.367753] 	893430558e5bf116179915de2d3d119ad25c01cf [media]
> cx23885-cards: fix netup card default revision
> [  136.389963] WARNING: You are using an experimental version of the media
> stack.
> [  136.389964] 	As the driver is backported to an older kernel, it doesn't
> offer
> [  136.389965] 	enough quality for its usage in production.
> [  136.389965] 	Use it with care.
> [  136.389966] Latest git patches (needed if you report a bug to
> linux-media@vger.kernel.org):
> [  136.389966] 	9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
> export b2c2_flexcop_debug symbol
> [  136.389967] 	88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
> Makefile rules
> [  136.389968] 	893430558e5bf116179915de2d3d119ad25c01cf [media]
> cx23885-cards: fix netup card default revision
> [  136.407633] usb 5-2: dvb_usbv2: found a 'NOXON DAB/DAB+ USB dongle' in
> warm state
> [  136.407655] usbcore: registered new interface driver dvb_usb_rtl28xxu
> [  136.434729] usb 5-2: dvb_usbv2: will pass the complete MPEG2 transport
> stream to the software demuxer
> [  136.434796] DVB: registering new adapter (NOXON DAB/DAB+ USB dongle)
> [  136.470930] usb 5-2: dvb_usb_rtl28xxu: E4000 tuner found
> [  136.482557] usb 5-2: dvb_usbv2: 'NOXON DAB/DAB+ USB dongle' error while
> loading driver (-19)
> [  136.483313] usb 5-2: dvb_usbv2: 'NOXON DAB/DAB+ USB dongle' successfully
> deinitialized and disconnected
>
> If this is an unsupported tuner do I need to get a different usb device or
> can I try a different rtl driver?

No luck, no driver for e4000.

I think vendor driver could support your device, try to find it.

regards
Antti

-- 
http://palosaari.fi/

RE: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[M. Fletcher]

>Open the rtl28xxu.c file and find line:
>	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK, replace
it:
>	{ DVB_USB_DEVICE(0x185b, 0x0680,

Line changed as follows:

//{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
{ DVB_USB_DEVICE(0x185b, 0x0680,
	&rtl2832u_props, "NOXON DAB/DAB+ USB dongle", NULL) },

>Compile and install.

Successful.

>Enable debugs:
>#modprobe dvb_usb_rtl28xxu; echo -n 'module dvb_usb_rtl28xxu +p' >
/sys/kernel/debug/dynamic_debug/control

Executing this entire line produced:
bash: /sys/kernel/debug/dynamic_debug/control: No such file or directory

Succesfully executed:
modprobe dvb_usb_rtl28xxu

Module loaded:
root@DCTbox:/# lsmod | grep dvb
dvb_usb_rtl28xxu       18522  0 
dvb_usbv2              23726  1 dvb_usb_rtl28xxu
rc_core                26343  2 dvb_usb_rtl28xxu,dvb_usbv2
rtl2830                18340  1 dvb_usb_rtl28xxu
dvb_core              110590  2 dvb_usbv2,rtl2830

>plug stick in and look what dmesg says. With a good luck there is supported
RF-tuner and it works, but most likely there is some RF-tuner which is >not
supported and it does not work.

root@DCTbox:/home/dct# dmesg
[  136.285497] usb 5-2: new high-speed USB device number 4 using xhci_hcd
[  136.319609] usb 5-2: ep 0x81 - rounding interval to 32768 microframes, ep
desc says 0 microframes
[  136.367747] WARNING: You are using an experimental version of the media
stack.
[  136.367748] 	As the driver is backported to an older kernel, it doesn't
offer
[  136.367749] 	enough quality for its usage in production.
[  136.367750] 	Use it with care.
[  136.367750] Latest git patches (needed if you report a bug to
linux-media@vger.kernel.org):
[  136.367751] 	9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
export b2c2_flexcop_debug symbol
[  136.367752] 	88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
Makefile rules
[  136.367753] 	893430558e5bf116179915de2d3d119ad25c01cf [media]
cx23885-cards: fix netup card default revision
[  136.389963] WARNING: You are using an experimental version of the media
stack.
[  136.389964] 	As the driver is backported to an older kernel, it doesn't
offer
[  136.389965] 	enough quality for its usage in production.
[  136.389965] 	Use it with care.
[  136.389966] Latest git patches (needed if you report a bug to
linux-media@vger.kernel.org):
[  136.389966] 	9b78c5a3007e10a172d4e83bea18509fdff2e8e3 [media] b2c2:
export b2c2_flexcop_debug symbol
[  136.389967] 	88f8472c9fc6c08f5113887471f1f4aabf7b2929 [media] Fix some
Makefile rules
[  136.389968] 	893430558e5bf116179915de2d3d119ad25c01cf [media]
cx23885-cards: fix netup card default revision
[  136.407633] usb 5-2: dvb_usbv2: found a 'NOXON DAB/DAB+ USB dongle' in
warm state
[  136.407655] usbcore: registered new interface driver dvb_usb_rtl28xxu
[  136.434729] usb 5-2: dvb_usbv2: will pass the complete MPEG2 transport
stream to the software demuxer
[  136.434796] DVB: registering new adapter (NOXON DAB/DAB+ USB dongle)
[  136.470930] usb 5-2: dvb_usb_rtl28xxu: E4000 tuner found
[  136.482557] usb 5-2: dvb_usbv2: 'NOXON DAB/DAB+ USB dongle' error while
loading driver (-19)
[  136.483313] usb 5-2: dvb_usbv2: 'NOXON DAB/DAB+ USB dongle' successfully
deinitialized and disconnected

If this is an unsupported tuner do I need to get a different usb device or
can I try a different rtl driver?

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[Antti Palosaari]

On 08/21/2012 06:37 PM, M. Fletcher wrote:
>> It should be inside drivers/media/usb/dvb-usb-v2/ modinfo dvb_usb_rtl28xxu
> should list it.
>
> Correct, it was in drivers/media/usb/dvb-usb-v2/
> modinfo gives the expected output
>
>> Also it is highly possible your device usb id is not known >by driver, you
> should add it, easiest is just replace some existing rtl2832u device id.
>
> Can you please advise how I do this? lsusb gives my device ID as 185b:0680

Open the rtl28xxu.c file and find line:
	{ DVB_USB_DEVICE(USB_VID_TERRATEC, USB_PID_NOXON_DAB_STICK,
replace it:
	{ DVB_USB_DEVICE(0x185b, 0x0680,

Compile and install.

Enable debugs:
#modprobe dvb_usb_rtl28xxu; echo -n 'module dvb_usb_rtl28xxu +p' > 
/sys/kernel/debug/dynamic_debug/control

plug stick in and look what dmesg says. With a good luck there is 
supported RF-tuner and it works, but most likely there is some RF-tuner 
which is not supported and it does not work.


regards
Antti

-- 
http://palosaari.fi/

RE: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[M. Fletcher]

>It should be inside drivers/media/usb/dvb-usb-v2/ modinfo dvb_usb_rtl28xxu
should list it. 

Correct, it was in drivers/media/usb/dvb-usb-v2/
modinfo gives the expected output

>Also it is highly possible your device usb id is not known >by driver, you
should add it, easiest is just replace some existing rtl2832u device id.

Can you please advise how I do this? lsusb gives my device ID as 185b:0680

Regards,
Marc

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[Antti Palosaari]

On 08/21/2012 06:29 PM, M. Fletcher wrote:
> Apologies for the confusion. Having done more digging I think the
> dvb_usb_rtl2832u module was added by the package download from here
> http://www.dfragos.me/2011/11/installation-of-the-rt2832u-driver-in-linux/.
> This is confirmed by looking through the corresponding 'MakeFile'. I have
> therefore removed references to dvb_usb_rtl2832u from
> /lib/modules/3.2.0-29-generic/kernel/drivers/media/usb/dvb-usb.
>
> I have also performed a clean, build & install of V4L-DVB.
>
> The contents of the dvb-usb folder are now as follows:
>
> dct@DCTbox:/lib/modules/3.2.0-29-generic/kernel/drivers/media/usb/dvb-usb$
> ls
> dvb-usb-a800.ko           dvb-usb-dib0700.ko        dvb-usb-dtv5100.ko
> dvb-usb-nova-t-usb2.ko     dvb-usb-vp702x.ko
> dvb-usb-af9005.ko         dvb-usb-dibusb-common.ko  dvb-usb-dw2102.ko
> dvb-usb-opera.ko           dvb-usb-vp7045.ko
> dvb-usb-af9005-remote.ko  dvb-usb-dibusb-mb.ko      dvb-usb-friio.ko
> dvb-usb-pctv452e.ko
> dvb-usb-az6027.ko         dvb-usb-dibusb-mc.ko      dvb-usb-gp8psk.ko
> dvb-usb-technisat-usb2.ko
> dvb-usb-cinergyT2.ko      dvb-usb-digitv.ko         dvb-usb.ko
> dvb-usb-ttusb2.ko
> dvb-usb-cxusb.ko          dvb-usb-dtt200u.ko        dvb-usb-m920x.ko
> dvb-usb-umt-010.ko
>
> I cannot see any reference to the dvb_usb_rtl28xxu module. Having said that
> a reference to 'dvb_usb_rtl28xxu' does appear when I build V4L-DVB.
>
> Can you please advise how I correctly add dvb_usb_rtl28xxu?
>

It should be inside drivers/media/usb/dvb-usb-v2/
modinfo dvb_usb_rtl28xxu should list it. Also it is highly possible your 
device usb id is not known by driver, you should add it, easiest is just 
replace some existing rtl2832u device id.


regards
Antti

-- 
http://palosaari.fi/

Re: Unable to load dvb-usb-rtl2832u driver in Ubuntu 12.04

[M. Fletcher]

Apologies for the confusion. Having done more digging I think the
dvb_usb_rtl2832u module was added by the package download from here
http://www.dfragos.me/2011/11/installation-of-the-rt2832u-driver-in-linux/.
This is confirmed by looking through the corresponding 'MakeFile'. I have
therefore removed references to dvb_usb_rtl2832u from
/lib/modules/3.2.0-29-generic/kernel/drivers/media/usb/dvb-usb.

I have also performed a clean, build & install of V4L-DVB.

The contents of the dvb-usb folder are now as follows:

dct@DCTbox:/lib/modules/3.2.0-29-generic/kernel/drivers/media/usb/dvb-usb$
ls
dvb-usb-a800.ko           dvb-usb-dib0700.ko        dvb-usb-dtv5100.ko
dvb-usb-nova-t-usb2.ko     dvb-usb-vp702x.ko
dvb-usb-af9005.ko         dvb-usb-dibusb-common.ko  dvb-usb-dw2102.ko
dvb-usb-opera.ko           dvb-usb-vp7045.ko
dvb-usb-af9005-remote.ko  dvb-usb-dibusb-mb.ko      dvb-usb-friio.ko
dvb-usb-pctv452e.ko
dvb-usb-az6027.ko         dvb-usb-dibusb-mc.ko      dvb-usb-gp8psk.ko
dvb-usb-technisat-usb2.ko
dvb-usb-cinergyT2.ko      dvb-usb-digitv.ko         dvb-usb.ko
dvb-usb-ttusb2.ko
dvb-usb-cxusb.ko          dvb-usb-dtt200u.ko        dvb-usb-m920x.ko
dvb-usb-umt-010.ko

I cannot see any reference to the dvb_usb_rtl28xxu module. Having said that
a reference to 'dvb_usb_rtl28xxu' does appear when I build V4L-DVB.

Can you please advise how I correctly add dvb_usb_rtl28xxu?