[mythtv-users] Ubuntu 18.04.1 & MythTV v29.1 recording failures

Tue Sep 25 16:45:32 UTC 2018

Hi, thanks for the response, yep, I am running the hauppauge kernel
and i do nonetheless see errors from dmsg which I had not noticed
before :-

andy at mustard:~$ dmesg | grep cx23885 | egrep -i '(fail|invalid|err|clear)'
[  200.800386] cx23885 0000:05:00.0: invalid short VPD tag 01 at offset 1
[  200.801834] cx23885 0000:06:00.0: invalid short VPD tag 01 at offset 1
[10423.176166] cx23885 0000:05:00.0: dma in progress detected
0x00000001 0x00000001, clearing
[10423.176187] cx23885 0000:05:00.0: dma in progress detected
0x00000001 0x00000001, clearing
[10423.176222] cx23885: cx23885[0]: mpeg risc op code error
[16544.002369] cx23885 0000:06:00.0: dma in progress detected
0x00000001 0x00000001, clearing
[17448.318946] cx23885: cx23885[0]: mpeg risc op code error
[17448.319157] cx23885 0000:05:00.0: dma in progress detected
0x00000001 0x00000001, clearing
[19683.681993] cx23885 0000:05:00.0: dma in progress detected
0x00000001 0x00000001, clearing
andy at mustard:~$

-- 
Andy
On Tue, 25 Sep 2018 at 17:38, Mike Bibbings <mike.bibbings at gmail.com> wrote:
>
> On 25/09/18 17:19, Andy Smith wrote:
> > Hi,
> >
> > It was all going so well ....  Recently migrated to new hardware and
> > OS (from Fedora) using a new Hauppauge WinTV-QuadHD quad DVB-T2 tuner
> > card. It has been working fine although MythBackend reports many
> > failures in mythbackend.log:
> >
> > Sep 25 09:28:30 mustard mythbackend: mythbackend[1255]: E
> > TVRecEventtv_rec.cpp:3743 (TuningFrequency) TVRec[1]: Failed to set
> > channel to . Reverting to kState_None
> >
> > These come initially with every recording that is started and I have
> > learned to ignore them until last night, 2 recordings failed
> > completely and apart from the fact that the log was filling with such
> > messages once per minute, it needed a reboot before anything could be
> > watched / recorded.  There was nothing particular in the backend log
> > that stood out to me that I wouldnt expect :-
> >
> > Sep 24 20:59:04 mustard mythbackend: mythbackend[1107]: E TVRecEvent
> > tv_rec.cpp:3962 (TuningSignalCheck) TVRec[2]: TuningSignalCheck: Hit
> > pre-fail timeout
> > Sep 24 20:59:05 mustard mythbackend: mythbackend[1107]: E
> > TVRecEventtv_rec.cpp:3962 (TuningSignalCheck) TVRec[1]:
> > TuningSignalCheck: Hit
> > pre-fail timeout
> > Sep 24 20:59:06 mustard mythbackend: mythbackend[1107]: W
> > TVRecEventtv_rec.cpp:3993 (TuningSignalCheck) TVRec[2]:
> > TuningSignalCheck:
> > taking more than 6000 ms to get a lock. marking this recording as 'Failing'.
> > Sep 24 20:59:06 mustard mythbackend: mythbackend[1107]: W
> > TVRecEventtv_rec.cpp:3995 (TuningSignalCheck) TVRec[2]: See 'Tuning
> > timeout' in
> > mythtv-setup for this input
> >
> > and likewise, nothing appeared in syslog or kern.log so I am a bit
> > stumped.  Has anyone seen this before with this card or has anyone got
> > any suggestions how to debug this?  Thanks.
> >
> > $ mythbackend --version
> > Please attach all output as a file in bug reports.
> > MythTV Version : v29.1-38-gb9c5f8b
> > MythTV Branch : fixes/29
> > Network Protocol : 91
> > Library API : 29.20180316-1
> > QT Version : 5.9.5
> > Options compiled in:
> >   linux profile use_hidesyms using_alsa 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_vbox 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_opengl_themepainter using_qtwebkit using_qtscript using_qtdbus
> > using_taglib using_v4l2 using_x11 using_xrandr using_xv
> > using_profiletype using_systemd_notify using_systemd_journal
> > using_bindings_perl using_bindings_python using_bindings_php
> > using_freetype2 using_mythtranscode using_opengl using_vaapi
> > using_vdpau using_ffmpeg_threads using_mheg using_libass using_libxml2
> > using_libmp3lame
> >
> > arecord -l
> > **** List of CAPTURE Hardware Devices ****
> > card 0: PCH [HDA Intel PCH], device 0: ALC887-VD Analog [ALC887-VD Analog]
> >    Subdevices: 0/1
> >    Subdevice #0: subdevice #0
> > card 0: PCH [HDA Intel PCH], device 2: ALC887-VD Alt Analog [ALC887-VD
> > Alt Analog]
> >    Subdevices: 1/1
> >    Subdevice #0: subdevice #0
> > card 2: CX23885 [Conexant CX23885], device 0: CX23885 Digital [CX23885 Digital]
> >    Subdevices: 0/1
> >    Subdevice #0: subdevice #0
> > card 3: CX23885_1 [Conexant CX23885], device 0: CX23885 Digital
> > [CX23885 Digital]
> >    Subdevices: 0/1
> >    Subdevice #0: subdevice #0
> >
> > $ nvidia-smi
> > Tue Sep 25 16:21:54 2018
> > +------------------------------------------------------+
> > | NVIDIA-SMI 340.106    Driver Version: 340.106        |
> > |-------------------------------+----------------------+----------------------+
> > | GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
> > | Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
> > |===============================+======================+======================|
> > |   0  GeForce 210         Off  | 0000:01:00.0     N/A |                  N/A |
> > | N/A   31C   P12    N/A /  N/A |     49MiB /   511MiB |     N/A      Default |
> > +-------------------------------+----------------------+--
> > _______________________________________________
> Assuming you are the standard Ubuntu 18.04 LTS kernel, I suspect if you
> have a look at dmesg output you will find errors relating to cx23885 driver.
>
> The solution is to use the hauppauge kernel which includes an updated
> media stack (V4L), which contains a lot of patches for the Hauppauge
> range of cards.
> These patches (mostly) have been upstreamed, but Ubuntu do not backport
> to older kernels.
>
> See https://github.com/b-rad-NDi/Ubuntu-media-tree-kernel-builder
>
> Basically :
> sudo add-apt-repository ppa:b-rad/kernel+mediatree+hauppauge
> sudo apt-get install linux-image-mediatree linux-headers-mediatree
> linux-firmware-hauppauge
> sudo reboot
>
>
> Note linux-firmware-hauppauge is only required for DVB-T/T2 users
>
> Mike
>
>
>
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