Re: video from USB DVB-T get damaged after some time

kapetr Sat, 08 Feb 2014 10:36:34 -0800

Hello,

I have compile it (I hope) the more right way now :-)


The patch saved as aaa.patch in media_build/backports
and added lines to  media_build/backports/backports.txt:
----
[3.2.0]
add aaa.patch
----

Now dmesg looks like:
-----------------

[ 17.643287] usb 1-1.3: dvb_usb_af9035: prechip_version=83chip_version=02 chip_type=9135[ 17.643661] usb 1-1.3: dvb_usb_v2: found a 'ITE 9135 Generic' in coldstate[ 17.652169] usb 1-1.3: dvb_usb_v2: downloading firmware from file'dvb-usb-it9135-02.fw'

[   17.746382] usb 1-1.3: dvb_usb_af9035: firmware version=3.39.1.0

[ 17.746389] usb 1-1.3: dvb_usb_v2: found a 'ITE 9135 Generic' in warmstate[ 17.747413] usb 1-1.3: dvb_usb_v2: will pass the complete MPEG2transport stream to the software demuxer

[   17.747429] DVB: registering new adapter (ITE 9135 Generic)

[ 17.805233] i2c i2c-16: af9033: firmware version: LINK=0.0.0.0OFDM=3.9.1.0[ 17.805238] usb 1-1.3: DVB: registering adapter 0 frontend 0 (AfatechAF9033 (DVB-T))...[ 17.821832] i2c i2c-16: tuner_it913x: ITE Tech IT913X successfullyattached

[   17.858231] Registered IR keymap rc-it913x-v1

[ 17.858291] input: ITE 9135 Generic as/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/rc/rc0/input5[ 17.858395] rc0: ITE 9135 Generic as/devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.3/rc/rc0[ 17.858398] usb 1-1.3: dvb_usb_v2: schedule remote query interval to500 msecs[ 17.858401] usb 1-1.3: dvb_usb_v2: 'ITE 9135 Generic' successfullyinitialized and connected

[   17.858415] usbcore: registered new interface driver dvb_usb_af9035
------------------

First I have thing the problem is gone: It has run OK over 20 minutes(before it goes down mostly in <10 min on CH59).


But - unfortunately after cca 25 min it has go down again :-(
--------

...

status 07 | signal ffff | snr 0122 | ber 004c8030 | unc 0002fffd |

---------


So - maybe is it little better, but the problem persist.
Any chance to solve it in dvb driver ?


I have tested (with the old driver) - that it helps to CTRL+C the:
tzap -r -c /etc/channels.conf "Prima ZOOM"

And then run it again. (It was not necessary to switch to another freq.and back, as I wrote before).

Unfortunately it damages for  a while the recording (file.ts).

Is there another way how to "re-tune" (re-zap) without breakrecording/viewing ?

I could then re-tune e.g. every 5 minutes and it could solve the problem.
Could not that be done in driver itself ?

Thanks.

--kapetr




Dne 8.2.2014 16:08, Malcolm Priestley napsal(a):

On Sat, 2014-02-08 at 15:43 +0100, kap...@mizera.cz wrote:

Hello,

unfortunately I do not understand development, patching, compiling things.
I have try it but I need more help.

I have done:

git clone --depth=1 git://linuxtv.org/media_build.git
cd media_build
./build

it downloads and builds all. At begin of compiling I had stop it.
Then I did manual change of
./media_build/linux/drivers/media/usb/dvb-usb-v2/af9035.c

------------------- old part:
          { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00aa,
                  &af9035_props, "TerraTec Cinergy T Stick (rev. 2)",
NULL) },
          /* IT9135 devices */
#if 0
          { DVB_USB_DEVICE(0x048d, 0x9135,
                  &af9035_props, "IT9135 reference design", NULL) },
          { DVB_USB_DEVICE(0x048d, 0x9006,
                  &af9035_props, "IT9135 reference design", NULL) },
#endif
          /* XXX: that same ID [0ccd:0099] is used by af9015 driver too */
          { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x0099,
                  &af9035_props, "TerraTec Cinergy T Stick Dual RC (rev.
2)", NULL) },
----------------------------- new:
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x00aa,
                &af9035_props, "TerraTec Cinergy T Stick (rev. 2)", NULL) },
        /* IT9135 devices */

        { DVB_USB_DEVICE(0x048d, 0x9135,
                &af9035_props, "IT9135 reference design", NULL) },

        /* XXX: that same ID [0ccd:0099] is used by af9015 driver too */
        { DVB_USB_DEVICE(USB_VID_TERRATEC, 0x0099,
                &af9035_props, "TerraTec Cinergy T Stick Dual RC (rev. 2)", 
NULL) },
--------------------------------------------


But now I do not know how to "restart" build process.


Just

make

from media_build directory.


I have try:

cd /tmp/media_build/linux
make

It had compiled *. and *.ko files.

you need to run
/sbin/depmod -a

and reboot

it best to just run with su/sudo

make install

I have just tested all the single ids.

I am about to send a patch to add all the single tuner ids
to af9035 from it913x.

I haven't found any problems.


Regards


Malcolm

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Re: video from USB DVB-T get damaged after some time

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