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Author: jernej

Drop backported DVB drivers?

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Post time 2016-5-30 02:38:37 | Show all posts
But is there any hardware working without porting drivers stopped working after you make backporting
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 Author| Post time 2016-5-31 05:04:47 | Show all posts
There were some reports, but I don't remember which. I don't have any DVB dongle.
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Post time 2016-6-2 06:15:38 | Show all posts
jernej i have a usb dvb-s2, which is a clone of geniatech hdstar. This device is called DS3000 revision 2.1.

I can use it on ubuntu 14.04 which has 3.19.0-59-generic kernel.

I guess porting the firmware from ubuntu to arm is not enough to make it work. What am i missing?
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Post time 2016-6-2 08:04:54 | Show all posts
Geniatech MyGica T230 seems to work fine in your OpenELEC

also made it run on current Armbian H3 with modprobe --force
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 Author| Post time 2016-6-18 18:24:04 | Show all posts
Does it work with native 3.4 drivers?
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Post time 2016-6-18 21:03:28 | Show all posts
jernej replied at 2016-6-18 18:24
Does it work with native 3.4 drivers?

the T230?

it works with the backported media_build drivers you include
it wont work with vanilla 3.4 as officially in kernel >3.19 only
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Post time 2016-6-23 17:15:15 | Show all posts
First, I want to say a big thank you to jernej for your fantastic work!

My posting is in this thread as the issue is a backported driver. I have a MyGica T230 which is recognized without problems in the 05-10 build, but not the 06-02 one. This is an excerpt of the dmesg log:

  1. [   20.809668] Latest git patches (needed if you report a bug to linux-media@vger.kernel.org):
  2. [   20.809676]  d3f5193019443ef8e556b64f3cd359773c4d377b Merge tag 'v4.6-rc1' into patchwork
  3. [   20.809683]  f55532a0c0b8bb6148f4e07853b876ef73bc69ca Linux 4.6-rc1
  4. [   20.809689]  d5a38f6e4668b3110a66cd96ce2096184bf66def Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
  5. [   20.844678] dvb-usb: found a 'Mygica T230 DVB-T/T2/C' in warm state.
  6. [   22.075435] gmac0: probed
  7. [   22.075855] gmac0 gmac0: eth0: eth0: PHY ID 00441400 at 0 IRQ poll (gmac0-0:00)
  8. [   22.103597] 8021q: 802.1Q VLAN Support v1.8
  9. [   22.990274] dvb-usb: bulk message failed: -110 (1/0)
  10. [   23.100769] dvb-usb: will pass the complete MPEG2 transport stream to the software demuxer.
  11. [   23.101065] DVB: registering new adapter (Mygica T230 DVB-T/T2/C)
  12. [   23.101107] usb 3-1: media controller created
  13. [   23.104137] dvb_create_media_entity: media entity 'dvb-demux' registered.
  14. [   23.133843] i2c i2c-1: Added multiplexed i2c bus 2
  15. [   23.133881] si2168 1-0064: Silicon Labs Si2168 successfully attached
  16. [   25.140261] dvb-usb: bulk message failed: -110 (6/0)
  17. [   27.140264] dvb-usb: bulk message failed: -110 (6/0)
  18. [   27.140331] si2157: probe of 2-0060 failed with error -121
  19. [   27.141229] dvb-usb: no frontend was attached by 'Mygica T230 DVB-T/T2/C'
  20. [   27.142500] dvb-usb: schedule remote query interval to 100 msecs.
  21. [   27.902199] [pm]state:1 valid
  22. [   27.902215] [pm]state:3 valid
  23. [   27.902221] [pm]state:7 valid
  24. [   29.140244] dvb-usb: bulk message failed: -110 (2/0)
  25. [   29.140277] dvb-usb: Mygica T230 DVB-T/T2/C successfully initialized and connected.
  26. [   29.140469] usbcore: registered new interface driver dvb_usb_cxusb
  27. [   31.140395] dvb-usb: bulk message failed: -110 (1/0)
  28. [   33.240258] dvb-usb: bulk message failed: -110 (1/0)
  29. [   35.340229] dvb-usb: bulk message failed: -110 (1/0)
  30. [   37.440271] dvb-usb: bulk message failed: -110 (1/0)
Copy the Code

The "dvb-usb: bulk message failed: -110 (1/0)" error is then repeated often.

Let me describe for what I use my OPi PC: As as selfmade receiver and recorder for the newly introduced DVB-T2 with H.265 in Germany. As tvheadend can stream over network, I could attach the stick to my RasPi, which has a recent kernel and stream to the OPi, but that means running 2 devices.

If it is too much hassle for you and slows you down from important improvements, then drop the backported drivers. If I understand it correctly, it is an issue of a few months only until there is a mainline kernel for the OPi and then we have the drivers back.
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Post time 2016-6-23 18:20:52 | Show all posts
Edited by giaur500 at 2016-6-23 18:30

Actually, due to missing vsync, dvb-t on OPI is generally useless. You will get jerky image with horizontal artiffacts (unless your dvb-t is not interlaced) - especially on dynamic scenes. So 1080i (hd) and 576i (sd) dvb-t is rather horrible experience. I would not recommend it, so dvb drivers don't matter. There is 720p dvb-t standard also, but it's not widely used.

In summary, I think there is nothing to fight for now. First need to focus on vsync, then dvb-t in later time. I however got sad news from jernej, this is difficult and no chance in near future.
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Post time 2016-6-23 19:51:20 | Show all posts
have any of you tried the armbian with 4.x kernel as a dvb host to stream on lan? would that help the dvb drivers work?
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Post time 2016-6-23 20:42:53 | Show all posts
giaur500 replied at 2016-6-23 18:20
Actually, due to missing vsync, dvb-t on OPI is generally useless. You will get jerky image with hor ...

German public television (I watch only public TV) uses 720p for DVB-C and DVB-S. All broadcasters in Germany will use 1080p for DVB-T2 (you can see at https://de.wikipedia.org/wiki/DVB-T2_HD#Senderangebot_Pilotmux (in German, but numbers are the same in English)).

So the vsync issue is no problem for me. Indeed, if I stream the DVB-T2 stream from another device and use Kodi on the OPi PC the picture is perfect
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