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Thread: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it here

  1. #11
    Join Date
    May 2005
    Location
    Canada
    Beans
    80

    Cooling helps, a LOT.

    I recently set up a Mythtv system for a buddy, using an HDPVR to capture from a Rogers cable box (HDMI) via an HD-Fury (HDMI-to-component).

    In initial testing, nothing would record reliably / repeatedly.

    So we opened up the (fanless) HDPVR, measured chip temperatures, and decided it was poorly designed and in need of extra cooling.

    We glued heatsinks onto the two primary chips, and plugged a 40x40x10mm fan into the "fan power" socket on the mainboard. My buddy drilled holes for airflow on two sides, and glued the fan to the case over one set of the holes.

    Thus far, it has been a reliable set-up after the refit.

    -ml

  2. #12
    Join Date
    Nov 2010
    Location
    South Jersey
    Beans
    15
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Distro and release (eg. Ubuntu 10.10, Fedora 13):
    Mythbuntu 10.10

    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*):
    mythtv-backend 2:0.24.0+fixes.20110

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc):
    mythtv-updates repository (mythbuntu-repos)

    Tuners you see the issue on:
    HD-PVR

    Other tuners on your system:
    Firmware version version (eg. 'dmesg | grep hdpvr'):
    [ 11.755147] hdpvr 1-2:1.0: untested firmware version 0x12, the driver might not work
    [ 12.049269] hdpvr 1-2:1.0: device now attached to video0
    [ 12.049293] usbcore: registered new interface driver hdpvr

    Kernel Version (uname -a):
    Linux HTPC 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:40:58 UTC 2011 i686 GNU/Linux

    Snippet of dmesg around the time the issue is happening:
    Any other info you think is relevant:
    Recording failed and without any input from me, it was able to record another show 4 hours later no problem on a different channel, and record the next day on the same channel.

    Here is the failed recording on channel BBC America from yesterday, it changes channels using 6200ch. This happens about once every two months but is not consistent on any channel or program. I only record maybe one or two programs a day. My system also uses mythwelcome for shutdown and ACPI Wakeup.

    There are times that I do have to powercycle the HD-PVR for this same error, but this time I did not. The times I do have to powercycle and reboot the computer, until I do that, all recordings are 0-byte files.

    mythbackend.log

    Code:
    2011-03-15 17:59:32.530 Started recording: "Top Gear": channel 2114 on cardid 1, sourceid 2
    Warning: Unit Spec ID different.
    Warning: Unit Software Version different.
    2011-03-15 17:59:37.234 Updating status for "Top Gear" on cardid 1 (Tuning => Recording)
    2011-03-15 17:59:37.362 TVRec(1): rec->GetPathname(): '/var/lib/mythtv/recordings/2114_20110315180000.mpg'
    2011-03-15 17:59:37.805 MPEGRec(/dev/video0) Error: StartEncoding failed
                            eno: Resource temporarily unavailable (11)
    2011-03-15 17:59:37.872 MPEGRec(/dev/video0) Error: Failed to start recording
    2011-03-15 17:59:38.552 TVRec(1): Changing from RecordingOnly to None
    2011-03-15 17:59:38.594 Updating status for "Top Gear" on cardid 1 (Recording => Recorder Failed)
    2011-03-15 17:59:38.687 Reschedule requested for id 0.
    2011-03-15 17:59:38.804 MainServer::ANN Playback
    2011-03-15 17:59:38.844 adding: HTPC as a client (events: 0)
    2011-03-15 17:59:38.886 MainServer::ANN Monitor
    2011-03-15 17:59:38.891 Scheduled 83 items in 0.2 = 0.05 match + 0.15 place
    2011-03-15 17:59:38.928 adding: HTPC as a client (events: 1)
    2011-03-15 17:59:39.027 Preview Error: Encountered problems running '/usr/bin/mythpreviewgen --size 0x0 --chanid 2114 --starttime 20110315180000  > $
    2011-03-15 17:59:40.962 I'm idle now... shutdown will occur in 1200 seconds.

  3. #13
    Join Date
    Sep 2009
    Location
    In a cold, dark place
    Beans
    186
    Distro
    Ubuntu 9.04 Jaunty Jackalope

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Distro and release (eg. Ubuntu 10.10, Fedora 13):
    Mythbuntu 10.4

    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*):
    ii mythtv-backend 0.23.0++fixes25362 A personal video recorder application (server)
    ii mythtv-backend-mas 0.23.0++fixes25362 Metapackage to setup and configure a "Master Backend

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc):
    Std repos included with Mythbuntu

    Tuners you see the issue on:
    NOVA TD500

    Other tuners on your system:
    NOVA T500

    Firmware version version (eg. 'dmesg | grep hdpvr'):
    [ 10.855181] cx88/2: cx2388x dvb driver version 0.0.7 loaded
    [ 10.855188] cx88/2: registering cx8802 driver, type: dvb access: shared

    Kernel Version (uname -a):
    Linux bgrsvr-v 2.6.32-27-generic #49-Ubuntu SMP Wed Dec 1 23:52:12 UTC 2010 i686 GNU/Linux

    Snippet of dmesg around the time the issue is happening:
    Not available - issue is not currently happening.

    I have observed I lose a lot of recordings when the dual-card NOVA TD 500 is installed. I could not figure out why, but I removed the card and I have a sinlge NOVA T 500 in now - every single recording works. Could it be the TD500 I wonder? Could it be the specification of the computer after all, it's only a P4 3GHZ with 1GB of RAM, not the most exciting specification by a long shot! I was about to make a new thread asking for a definate answer: If I install a 2nd card, do I need to scan for channels on it, or will the ones picked up by the existing card "just work" on the new card ... ?
    It's not just about "Why should I want Linux?". It's also about "Why should Linux want me?"

  4. #14
    Join Date
    Sep 2008
    Beans
    341

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Yes, this has happened to me as well. Here's the info:

    Distro and release (eg. Ubuntu 10.10, Fedora 13):

    Ubuntu 10.04

    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*):

    Code:
    dpkg -l mythtv-backend*
    Desired=Unknown/Install/Remove/Purge/Hold
    | Status=Not/Inst/Cfg-files/Unpacked/Failed-cfg/Half-inst/trig-aWait/Trig-pend
    |/ Err?=(none)/Reinst-required (Status,Err: uppercase=bad)
    ||/ Name           Version        Description
    +++-==============-==============-============================================
    ii  mythtv-backend 0.23.1+fixes26 A personal video recorder application (serve
    ii  mythtv-backend 0.23.1+fixes26 Metapackage to setup and configure a "Master

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc):

    Not entirely sure I understand this, but I guess the answer is whatever the default option is in Mythbuntu. I've enabled autobuilds in the MythTV control centre.

    Tuners you see the issue on:

    Hauppauge WinTV NOVA T 500

    Other tuners on your system:

    None

    Firmware version version (eg. 'dmesg | grep hdpvr'):

    Sorry, that command does nothing on my system. Happy to try again if someone can suggest some alternative syntax (I'm really not a Linux expert

    Kernel Version (uname -a):

    Linux htpc 2.6.32-29-generic #58-Ubuntu SMP Fri Feb 11 20:52:10 UTC 2011 x86_64 GNU/Linux

    Snippet of dmesg around the time the issue is happening:

    Sorry, I don't know what dmesg is. Happy to post it if someone can explain to a Linux n00b how to find it

    Any other info you think is relevant:

    It's happened a couple of times, separated by a few weeks, most recently this week. Both times it stopped recording all programs, but was cured by a reboot. Here's the mythtv backend log around the time one of the recordings started:

    Code:
    2011-03-16 20:57:16.123 AutoExpire: CalcParams(): Max required Free Space: 100.0 GB w/freq: 15 min
    2011-03-16 20:57:30.341 TVRec(4): ASK_RECORDING 4 29 0 0
    2011-03-16 20:58:01.922 TVRec(4): Changing from None to RecordingOnly
    2011-03-16 20:58:01.923 ProgramInfo(): Updated pathname '':'' -> '1031_20110316205800.mpg'
    2011-03-16 20:58:01.934 TVRec(4): HW Tuner: 4->4
    2011-03-16 20:58:02.103 AutoExpire: CalcParams(): Max required Free Space: 102.0 GB w/freq: 14 min
    2011-03-16 20:58:02.111 Started recording: Dark Blue "K-Town": channel 1031 on cardid 4, sourceid 1
    2011-03-16 21:01:23.220 UPnpMedia: BuildMediaMap VIDEO scan starting in :/media/disk2/mythtv/videos:
    2011-03-16 21:01:23.261 UPnpMedia: BuildMediaMap Done. Found 87 objects
    2011-03-16 21:12:16.215 AutoExpire: CalcParams(): Max required Free Space: 102.0 GB w/freq: 14 min
    and here's the same log around the time the same recording finished:
    Code:
    2011-03-16 21:59:30.601 TVRec(4): ASK_RECORDING 4 29 0 0
    2011-03-16 22:00:02.903 TVRec(4): Changing from RecordingOnly to None
    2011-03-16 22:00:02.999 ProgramInfo(): Updated pathname '':'' -> '1031_20110316205800.mpg'
    2011-03-16 22:00:03.010 Finished recording Dark Blue "K-Town": channel 1031
    2011-03-16 22:00:03.027 TVRec(4): Changing from None to RecordingOnly
    2011-03-16 22:00:03.032 TVRec(4): HW Tuner: 4->4
    2011-03-16 22:00:03.108 AutoExpire: CalcParams(): Max required Free Space: 102.0 GB w/freq: 14 min
    2011-03-16 22:00:03.120 Started recording: Sons of Anarchy "Fa Guan": channel 1031 on cardid 4, sourceid 1
    2011-03-16 22:00:03.144 ProgramInfo(): Updated pathname '':'' -> '1031_20110316205800.mpg'
    2011-03-16 22:00:03.155 ProgramInfo(): Updated pathname '':'' -> '1031_20110316220000.mpg'
    and here's a bit in the middle which appears to be riddled with error messages (no idea if it's relevant):

    Code:
    2011-03-16 21:37:46.895 adding: htpc as a client (events: 2)
    2011-03-16 21:37:46.968 MainServer::ANN Monitor
    2011-03-16 21:37:46.973 adding: htpc as a client (events: 2)
    2011-03-16 21:37:47.059 ProgramInfo(1031_20110316205800.mpg), Error: GetPlaybackURL: '1031_20110316205800.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.063 ProgramInfo(1028_20110315235800.mpg), Error: GetPlaybackURL: '1028_20110315235800.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.075 ProgramInfo(1031_20110315150800.mpg), Error: GetPlaybackURL: '1031_20110315150800.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.086 ProgramInfo(1002_20110314203000.mpg), Error: GetPlaybackURL: '1002_20110314203000.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.097 ProgramInfo(1003_20110314195800.mpg), Error: GetPlaybackURL: '1003_20110314195800.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.108 ProgramInfo(1001_20110313222300.mpg), Error: GetPlaybackURL: '1001_20110313222300.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.119 ProgramInfo(1002_20110313205800.mpg), Error: GetPlaybackURL: '1002_20110313205800.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.146 ProgramInfo(1010_20100624000500.mpg), Error: GetPlaybackURL: '1010_20100624000500.mpg' should be local, but it can not be found.
    2011-03-16 21:37:47.936 MainServer::ANN Monitor
    2011-03-16 21:37:47.940 adding: htpc as a client (events: 2)
    2011-03-16 21:38:14.602 MainServer::ANN Monitor
    2011-03-16 21:38:14.617 adding: htpc as a client (events: 2)
    2011-03-16 21:38:14.677 MainServer::ANN Monitor
    2011-03-16 21:38:14.762 adding: htpc as a client (events: 2)
    2011-03-16 21:38:14.855 ProgramInfo(1031_20110316205800.mpg), Error: GetPlaybackURL: '1031_20110316205800.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.863 ProgramInfo(1028_20110315235800.mpg), Error: GetPlaybackURL: '1028_20110315235800.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.874 ProgramInfo(1031_20110315150800.mpg), Error: GetPlaybackURL: '1031_20110315150800.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.885 ProgramInfo(1002_20110314203000.mpg), Error: GetPlaybackURL: '1002_20110314203000.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.897 ProgramInfo(1003_20110314195800.mpg), Error: GetPlaybackURL: '1003_20110314195800.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.908 ProgramInfo(1001_20110313222300.mpg), Error: GetPlaybackURL: '1001_20110313222300.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.919 ProgramInfo(1002_20110313205800.mpg), Error: GetPlaybackURL: '1002_20110313205800.mpg' should be local, but it can not be found.
    2011-03-16 21:38:14.945 ProgramInfo(1010_20100624000500.mpg), Error: GetPlaybackURL: '1010_20100624000500.mpg' should be local, but it can not be found.
    2011-03-16 21:38:15.866 MainServer::ANN Monitor
    2011-03-16 21:38:15.884 adding: htpc as a client (events: 2)
    Good luck in figuring out what the problem is!

  5. #15
    Join Date
    Mar 2011
    Beans
    3

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Distro and release (eg. Ubuntu 10.10, Fedora 13):
    Ubuntu 10.10 Maverick Meerkat

    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*):
    mythtv-backend 2:0.24.0+fixes

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc):
    Avenard repos

    Tuners you see the issue on:
    DigitalNow TinyTwin DVB-T Receiver

    Other tuners on your system:
    None

    Firmware version version (eg. 'dmesg | grep hdpvr'):
    [ 22.683937] af9013: firmware version:4.95.0
    [ 22.984929] af9013: found a 'Afatech AF9013 DVB-T' in warm state.
    [ 22.988445] af9013: firmware version:4.95.0
    [ 23.147882] usbcore: registered new interface driver dvb_usb_af9015

    Kernel Version (uname -a):
    Linux XBMCLive 2.6.35-28-generic #49-Ubuntu SMP Tue Mar 1 14:40:58 UTC 2011 i686 GNU/Linux

    Snippet of dmesg around the time the issue is happening:
    [ 4799.687555] af9013: I2C read failed reg:d330
    [ 4844.773478] af9015: command failed:2
    [ 4844.773497] af9013: I2C read failed reg:d330
    [ 4854.648916] af9015: command failed:2
    [ 4854.648938] af9013: I2C read failed reg:d330
    [ 4861.248886] af9015: command failed:2
    [ 4861.248905] af9013: I2C read failed reg:d330
    [ 5027.434997] af9015: command failed:2
    [ 5027.435018] af9013: I2C read failed reg:d2e6

    Any other info you think is relevant:
    Have been running XBMC/MythTV on my ASRock Ion system for 18 months now, starting with Ubuntu 9.04 (XBMCLive) and always immediately applying latest updates. Have infrequently experienced issue of 0-byte recordings before - recompiling the DVB-drivers upon kernel upgrades seemed to have resolved it over time. However, the 0-byte recordings issue has now come back in my latest setup and has been persistently annoying over the last 3 weeks. Only solution seems to be to power off system & unplug DVB card for about 10 minutes and then reboot. This is my only major annoyance with an otherwise wonderful XBMC/MythTV setup and it would be great to see this bug resolved. Thanks to whoever is looking into this.

  6. #16
    Join Date
    May 2007
    Beans
    2,337

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Quote Originally Posted by ian dobson View Post
    Hi,

    I sometimes see 0 byte recordings. When I see one every recording after it is 0 byte until I reboot the box.

    More info here http://ubuntuforums.org/showthread.php?t=1676491

    Kernel
    Linux alpha2 2.6.35-25-generic #44-Ubuntu SMP Fri Jan 21 17:40:44 UTC 2011 x86_64 GNU/Linux

    2 DVB-C tuner cards
    Code:
    07:00.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
            Subsystem: KNC One Device 0022
            Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
            Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
            Latency: 32 (3750ns min, 9500ns max)
            Interrupt: pin A routed to IRQ 18
            Region 0: Memory at fb101000 (32-bit, non-prefetchable) [size=512]
            Kernel driver in use: budget_av
            Kernel modules: budget-av
    
    07:01.0 Multimedia controller: Philips Semiconductors SAA7146 (rev 01)
            Subsystem: KNC One Device 002c
            Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
            Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
            Latency: 32 (3750ns min, 9500ns max)
            Interrupt: pin A routed to IRQ 19
            Region 0: Memory at fb100000 (32-bit, non-prefetchable) [size=512]
            Kernel driver in use: budget_av
            Kernel modules: budget-av
    MythTV version
    Code:
    ii  libmyth-0.23-0                             0.23.1+fixes26732-0ubuntu0+mythbuntu2             Common library code for MythTV and add-on modules (runtime)
    ii  libmythtv-perl                             0.23.1+fixes26732-0ubuntu0+mythbuntu2             A PERL library to access some MythTV features
    ii  mythbuntu-repos                            8.5-0ubuntu0+mythbuntu~auto20101013003830         Mythbuntu repos installer
    ii  mythtv-backend                             0.23.1+fixes26732-0ubuntu0+mythbuntu2             A personal video recorder application (server)
    ii  mythtv-common                              0.23.1+fixes26732-0ubuntu0+mythbuntu2             A personal video recorder application (common data)
    ii  mythtv-database                            0.23.1+fixes26732-0ubuntu0+mythbuntu2             A personal video recorder application (database)
    ii  mythtv-transcode-utils                     0.23.1+fixes26732-0ubuntu0+mythbuntu2             Utilities used for transcoding MythTV tasks
    ii  mythweb                                    0.23.1+fixes26732-0ubuntu0+mythbuntu2             Web interface add-on module for MythTV
    syslog messages when the tuners die
    Code:
    Feb 22 01:19:25 alpha2 kernel: [116475.798614] irq 18: nobody cared (try booting with the "irqpoll" option)
    Feb 22 01:19:25 alpha2 kernel: [116475.798626] Pid: 30780, comm: FahCore_a3.exe Tainted: P            2.6.35-25-generic #44-Ubuntu
    Feb 22 01:19:25 alpha2 kernel: [116475.798628] Call Trace:
    Feb 22 01:19:25 alpha2 kernel: [116475.798630]  <IRQ>  [<ffffffff810cbc1b>] __report_bad_irq+0x2b/0xa0
    Feb 22 01:19:25 alpha2 kernel: [116475.798638]  [<ffffffff810cbe1c>] note_interrupt+0x18c/0x1d0
    Feb 22 01:19:25 alpha2 kernel: [116475.798642]  [<ffffffff8102cd89>] ? ack_apic_level+0x79/0x1b0
    Feb 22 01:19:25 alpha2 kernel: [116475.798645]  [<ffffffff810cc61d>] handle_fasteoi_irq+0xdd/0x110
    Feb 22 01:19:25 alpha2 kernel: [116475.798648]  [<ffffffff8100cb12>] handle_irq+0x22/0x30
    Feb 22 01:19:25 alpha2 kernel: [116475.798651]  [<ffffffff815921ec>] do_IRQ+0x6c/0xf0
    Feb 22 01:19:25 alpha2 kernel: [116475.798655]  [<ffffffff8158add3>] ret_from_intr+0x0/0x11
    Feb 22 01:19:25 alpha2 kernel: [116475.798656]  <EOI>
    Feb 22 01:19:25 alpha2 kernel: [116475.798658] handlers:
    Feb 22 01:19:25 alpha2 kernel: [116475.798662] [<ffffffffa0a96380>] (interrupt_hw+0x0/0x2b0 [saa7146])
    Feb 22 01:19:25 alpha2 kernel: [116475.798681] [<ffffffffa005d890>] (sil24_interrupt+0x0/0x1ac [sata_sil24])
    Feb 22 01:19:25 alpha2 kernel: [116475.798695] Disabling IRQ #18
    Feb 22 01:19:26 alpha2 kernel: [116476.085905] saa7146 (0) saa7146_i2c_writeout [irq]: timed out waiting for end of xfer
    Feb 22 01:19:26 alpha2 kernel: [116476.128119] saa7146 (0) saa7146_i2c_writeout [irq]: timed out waiting for end of xfer
    Feb 22 01:19:26 alpha2 kernel: [116476.168091] saa7146 (0) saa7146_i2c_writeout [irq]: timed out waiting for end of xfer
    Feb 22 01:19:26 alpha2 kernel: [116476.218061] saa7146 (0) saa7146_i2c_writeout [irq]: timed out waiting for end of xfer
    Feb 22 01:19:26 alpha2 kernel: [116476.238064] DVB: TDA10023(0): tda10023_readreg: readreg error (reg == 0x11, ret == -5)
    Running on a Asus p8p67 with a 2600CPU/16Gb ram and 8Tb RAID5 array.

    Note the system was running on a quad core2 for almost 2years with out any major problems. The nobody cared errors started after upgrading the motherboard. The error can take upto a week for it to appear. I'm now testing with the irqpoll kernel parameter......

    Regards
    Ian Dobson
    irqpoll fixed it for me. It looks as if the PCI-e to PCI bridge sometimes has timing problems.

    Regards
    Ian DObson
    Walking on water and writing software to specification is easy if they're frozen.

    My corner of the internet http://www.planet-ian.com

  7. #17
    Join Date
    Nov 2010
    Location
    South Jersey
    Beans
    15
    Distro
    Ubuntu 10.04 Lucid Lynx

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Just a follow-up to my post (#12) with 0-byte recordings on my HD-PVR. A few days after I made the post I changed the tuner timeout on the capture card setup from 3000ms (old setting from 0.23?) to 7000ms and I have had no problems. I have since increased my recordings now that it seems stable.

  8. #18
    Join Date
    Jan 2010
    Location
    London
    Beans
    81

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    I get this a lot (but I can be very specific about what causes it in my instance)

    Distro and release (eg. Ubuntu 10.10, Fedora 13): Mythbuntu 10.10
    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*): 0.23.1+fixes26

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc): standard repos (I assume, not changed any setting)

    Tuners you see the issue on: Nova-T PCI (dvb-t)

    Other tuners on your system: none

    Firmware version version (eg. 'dmesg | grep hdpvr'): uses cx88 module

    Kernel Version (uname -a): Linux HTPC 2.6.35-25-generic-pae #44-Ubuntu SMP Fri Jan 21 19:01:46 UTC 2011 i686 GNU/Linux

    Snippet of dmesg around the time the issue is happening:

    Any other info you think is relevant:

    Ok, what triggers it for me is suspend/resume. Scheduled recordings give me zero byte recordings after resume.

    I've got "/etc/init.d/myth-backend restart" in a resume script but that's not fixing it.


    EDIT: OK, I have fixed it for my system now.

    I've got a script in /etc/pm/sleep.d which stops myth-backend when suspending (note my spelling mistake in the post above, should have been "mythtv-backend").
    After the backend is stopped I remove the cx88_dvb module.

    When resuming the maching I do it the other way round, I insert the module and then restart the backend.

    I'm not taking any credit for this - solution came from here - although I had to stop backend before I could remove module, and I used the init.d stop route rather than the "stop mythtv-backend".

    Bingo, no more 0B recordings for me (touch wood).
    Last edited by el_Paraguayo; April 26th, 2011 at 08:37 AM. Reason: Added solution
    Me fail English? That's unpossible.

  9. #19
    Join Date
    Mar 2011
    Beans
    3

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Just a follow-up to my post (#12) with 0-byte recordings on my HD-PVR. A few days after I made the post I changed the tuner timeout on the capture card setup from 3000ms (old setting from 0.23?) to 7000ms and I have had no problems. I have since increased my recordings now that it seems stable.
    I can confirm that changing the tuner timeout from 3000ms to 7000ms solved the issue for me as well. I haven't experienced empty recordings for about three weeks now.
    Last edited by Zennon; May 9th, 2011 at 12:57 AM.

  10. #20
    Join Date
    May 2008
    Beans
    10

    Re: RFH: Do you get 0-byte recordings? (Even infrequently) Please post info about it

    Distro and release (eg. Ubuntu 10.10, Fedora 13):
    Mythbuntu 11.04

    Full version of the MythTV Backend package (eg. dpkg -l mythtv-backend*):
    mythtv-backend 2:0.24.0+fixes

    Where you get your mythtv packages from (standard repos, avenard repos, mythbuntu repos, compile from source, etc):
    Haven't changed anything so standard

    Tuners you see the issue on:
    HDHomeRun DVB-T

    Other tuners on your system:
    None

    Firmware version version (eg. 'dmesg | grep hdpvr'):
    Latest for HDHomeRun, can't remember off the top of my head.

    Kernel Version (uname -a):
    Linux core 2.6.38-8-generic

    Snippet of dmesg around the time the issue is happening:
    Random and haven't caught one yet.

    Any other info you think is relevant:

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