[mythtv-users] Can't open DVB frontend with 4.2 kernel

[Josu Lazkano]

2015-10-26 16:28 GMT+01:00 Stuart Auchterlonie <stuarta at squashedfrog.net>:
> On 25/10/15 19:53, Josu Lazkano wrote:
>> Hello,
>>
>> I just upgrade the backend server to 4.2 kernel because I add a new
>> DVB-S2 device (Tevii S482).
>>
>> Now the problem is that I can not add any DVB-S2 device, it says:
>>
>> 2015-10-25 20:07:42.937872 E  Can't open DVB frontend
>> (/dev/dvb/adapter6/frontend0) for /dev/dvb/adapter6/frontend0.
>>
>> This is the adapter permissions:
>>
>> # ls -lh /dev/dvb/adapter6/
>> total 0
>> crw-rw---- 1 root video 212, 0 Oct 25 20:02 demux0
>> crw-rw---- 1 root video 212, 1 Oct 25 20:02 dvr0
>> crw-rw---- 1 root video 212, 3 Oct 25 20:02 frontend0
>> crw-rw---- 1 root video 212, 2 Oct 25 20:02 net0
>>
>> It only happens with DVB-S2 devices, I have other DVB-T devices and
>> they works great.
>>
>> My devices are Tevii S470 and Tevii S482.
>>
>> This is mythbackend version (deb-multimedia Jessie):
>>
>> # mythbackend --version
>> Please attach all output as a file in bug reports.
>> MythTV Version : ad97d24
>> MythTV Branch : fixes/0.27
>> Network Protocol : 77
>> Library API : 0.27.20141016-1
>> QT Version : 4.8.6
>> Options compiled in:
>>  linux profile use_hidesyms using_alsa using_jack using_oss
>> using_pulse using_pulseoutput using_backend using_bindings_perl
>> using_bindings_python using_bindings_php using_crystalhd using_dvb
>> using_firewire using_frontend using_hdhomerun using_ceton using_hdpvr
>> using_ivtv using_joystick_menu using_libcec using_libcrypto
>> using_libdns_sd using_libfftw3 using_libxml2 using_lirc using_mheg
>> using_opengl using_opengl_video using_qtwebkit using_qtscript
>> using_qtdbus using_taglib using_v4l2 using_x11 using_xrandr using_xv
>> using_profiletype using_mythlogserver using_bindings_perl
>> using_bindings_python using_bindings_php using_mythtranscode
>> using_opengl using_vaapi using_vdpau using_ffmpeg_threads using_mheg
>> using_libass using_libxml2
>>
>> Anyone have similar devices and kernel?
>>
>
> Check your kernel logs (dmesg, /var/log/syslog|messages, journalctl -b0)
> and see if it is throwing errors about firmware loading
>
> Regards
> Stuart
>
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Thanks Stuart,

It looks like the firmware is loaded correctlly.

There was a bug in kernel 4.2 that broke the support for M88DS3103
based devices: https://lkml.org/lkml/2015/10/22/586

I will wait for 4.3 kernel.

Regards.

-- 
Josu Lazkano