[mythtv-users] HD-PVR extremely unstable on backend, works fine on laptop

Harley Peters harley at thepetersclan.com
Mon Sep 26 03:48:15 UTC 2011


On Sun, 2011-09-25 at 15:50 -0700, Erik Jensen wrote:
> On Sun, Sep 25, 2011 at 8:36 AM, Harley Peters <harley at thepetersclan.com> wrote:
> > On Sun, 2011-09-25 at 03:44 -0700, Erik Jensen wrote:
> >> I just purchased an HD-PVR to allow me to record CCI restricted
> >> channels from my cable box. When connected to my backend, it stops
> >> responding after capturing for 5-10 minutes, and I have to power cycle
> >> it to get it back.
> >>
> >> It is a Rev F2 with firmware 0x15
> >>
> >> I have tried all of the following:
> >> catting to mplayer
> >> catting to a file
> >> recording in MythTV
> >> LiveTV in MythTV
> >> Unloading and reloading the driver
> >> Upgrading the firmware to 0x17 (Killed the picture color, didn't fix
> >> the problem)
> >> Downgrading the firmware to 0x15 again
> >> Plugging the device into a different USB port
> >>
> >> There are no errors reported to dmesg
> >>
> >> When using cat, I have tried both the defaults and with the following settings:
> >>
> >> v4l2-ctl -d /dev/video0 --set-ctrl=video_bitrate_mode=0
> >> v4l2-ctl -d /dev/video0 --set-ctrl=video_bitrate=13500000
> >> v4l2-ctl -d /dev/video0 --set-ctrl=video_peak_bitrate=20200000
> >> v4l2-ctl -d /dev/video0 --set-audio-input 2
> >>
> >> However, if I connect the device to my laptop, it seems to capture
> >> just fine with the same settings (using cat, I don't have a
> >> mythbackend installed).
> >>
> >> Does anyone have an idea for tracking down the problem might be?
> >>
> >> Thanks.
> >>
> >> -- Erik Jensen
> >>
> >> "Cats are intended to teach us that not everything in nature has a purpose."
> >>   -- Garrison Keillor
> >> _______________________________________________
> >> mythtv-users mailing list
> >> mythtv-users at mythtv.org
> >> http://www.mythtv.org/mailman/listinfo/mythtv-users
> >
> > What version of the kernel are you using on the backend ?
> > Different kernel than the laptop ?
> >
> > Are you using the hdpvr's IR receiver transmitter ?
> >
> > What does lsmod show ?
> >
> > Sounds a lot like the IR receiver bug it will cause consistent failure's
> > in the 5-10 minute range.
> >
> > Even if your not actually using the IR receiver on the hdpvr  if the
> > modules that support it are loaded it will still cause it to fail.
> >
> > Harley
> 
> Hah! It seems that the IR receiver was indeed the problem. I had
> ir-kbd-i2c loaded to support the IR receiver on a different capture
> card, and it was also enabling the IR receiver on the HD-PVR. Since
> I'm not currently running a frontend on the system, I just disabled
> the ir-kbd-i2c module entirely, and my problem went away (Yay!). If I
> do need to have a combined front/back end again at some point, is
> there anyway to disable the HD-PVR receiver without disabling the
> other receiver that uses ir-kbd-i2c?
> 
> Thanks for you help,
> Erik
> _______________________________________________
> mythtv-users mailing list
> mythtv-users at mythtv.org
> http://www.mythtv.org/mailman/listinfo/mythtv-users

I have never tried as I use a separate IR receiver transmitter.
My guess is no as there would have to be some sort of module option that
you could set and I don't think there is.

You can look at the module options with modinfo.

Harley





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