[mythtv-users] Twin DVB-S2 PCIe device

Mon Jun 2 08:49:15 UTC 2014

On 01/06/14 19:00, Gavin Whitehead wrote:
> On 01/06/2014 08:26, Mike Bibbings wrote:
>> On 31/05/2014 22:24, Gavin Whitehead wrote:
>>> On 29/05/2014 10:38, Scott Moncrieff wrote:
>>>> I also use a TBS6981 dual dvb-s2 and the open source drivers are 
>>>> included in the current kernel. All you need to do to get it 
>>>> working is get the firmware from the TBS site and copy it to 
>>>> /lib/firmware/
>>>>
>>>> I spent a lot of time trying to make the TBS drivers work without 
>>>> any luck.
>>>>
>>>>
>>>>
>>>> On Thu, May 29, 2014 at 9:11 AM, Mike Bibbings 
>>>> <mike.bibbings at gmail.com <mailto:mike.bibbings at gmail.com>> wrote:
>>>>
>>>>     On 29/05/14 07:35, Josu Lazkano wrote:
>>>>
>>>>         Hello,
>>>>
>>>>         I want to upgrade mythbackend with a double DVB-S2 device,
>>>>         I want to
>>>>         use the PCIe interface for it.
>>>>
>>>>         I search some cheap devices:
>>>>
>>>>             - DVBSky S952:
>>>>         http://linuxtv.org/wiki/index.php/DVBSky_S952
>>>>
>>>>             - TeVii S480: http://linuxtv.org/wiki/index.php/TeVii_S480
>>>>
>>>>         Anyone has this devices? Any recommendation?
>>>>
>>>>         I want to add it in a HP ProLiant MicroServer (150 W).
>>>>
>>>>         Regards.
>>>>
>>>>     I use the TBS 6981, originally with the TBS linux drivers, but
>>>>     am now using the open source drivers in the latest kernels
>>>>     (3.12 and on from memory).
>>>>
>>>>     The TBS linux drivers do work, but use a very old version of
>>>>     the media software stack, which can cause problems if you have
>>>>     devices from other suppliers.
>>>>
>>>>     Mike
>>>>
>>>>
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>>>>
>>>>
>>>>
>>>>
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>>> Scott, I've just upgraded from Xubuntu 12.04 to 14.04 and tried to 
>>> get my TBS 6981 to work with the kernel drivers (3.13.0.x).  No 
>>> luck.  /var/log/syslog reported that the the 'on demand' firmware 
>>> didn't load.
>>>
>>> Can you let me know what steps you went through to get this 
>>> working?  And what Os are you running?
>>>
>>> Gavin
>>>
>>>
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>> This page gives the instructions for the  "dvb-fe-cx24117.fw" 
>> firmware file in /lib/firmware/  :
>>
>> https://github.com/ljalves/linux_media/wiki/CX24117-firmware
>>
>> Mike
>>
>>
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>
> I'm reasonably sure that I had done these things.
> I believe the TBS 6891 uses the cx23885 chipset/firmware, not the cx24117.
>
> The files 'v4l-cx23885-avcore-01.fw' and 'v4l-cx23885-enc.fw' were 
> already in /lib/firmware (from the 12.04 installation using the TBS 
> drivers) and I copied '|dvb-fe-cx24117.fw|' to /lib/firmware having 
> followed the instructions at 
> https://github.com/ljalves/linux_media/wiki/CX24117-firmware.
>
> Is there more to installing the firmware than just 'sudo cp 
> v4l-cx23885-avcore-01.fw/lib/firmware'?
>
> I will try again (though not until next weekend)
>
> Thanks for the advice,
>
> Gavin
>
>
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Gavin,
I presume you did a reboot after copying the firmware to /lib/firmware.

If you open a terminal and do 'dmesg | grep frontend' you should see 
something similar to:

[   13.184611] cx23885_dvb_register() allocating 1 frontend(s)
[   13.187238] i2c i2c-6: cx24117: Attaching frontend 0
[   13.187245] cx23885 0000:02:00.0: DVB: registering adapter 4 frontend 
0 (Conexant CX24117/CX24132)...
[   13.187458] cx23885_dvb_register() allocating 1 frontend(s)
[   13.187464] i2c i2c-6: cx24117: Attaching frontend 1
[   13.187468] cx23885 0000:02:00.0: DVB: registering adapter 5 frontend 
0 (Conexant CX24117/CX24132)...

Note your adapter numbers (4 & 5 in my case) may be different (0 &1) if 
no other dvb devices on mythbuntu.

You should also see something like this if you do 'dmesg |grep firmware' :

[   11.957967] usb 1-2: r8712u: Loading firmware from "rtlwifi/rtl8712u.bin"
[   13.169187] cx25840 7-0044: loaded v4l-cx23885-avcore-01.fw firmware 
(16382 bytes)
[   35.470272] i2c i2c-6: cx24117_load_firmware: FW version 1.44.95.2
[   35.470285] i2c i2c-6: cx24117_firmware_ondemand: Firmware upload 
complete

Both v4l-cx23885... and cx24117 firmwares are used, ignore rtlwifi... 
bit I am using wifi on the server.

The above were done on a fresh install of Myhthbuntu 14.04, with mythtv 
master (0.28-pre).

Mike

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