[mythtv-users] HDPVR intermittent failure

Jim lists at morton.hrcoxmail.com
Thu Jul 2 13:47:36 UTC 2020


On 7/2/2020 9:35 AM, DryHeat122 . wrote:
>
>
> On Thu, Jul 2, 2020, 5:08 AM Jim <lists at morton.hrcoxmail.com 
> <mailto:lists at morton.hrcoxmail.com>> wrote:
>
>     On 7/1/2020 9:23 PM, DryHeat122 . wrote:
>     >
>     > On Sun, Jun 28, 2020 at 9:32 AM Greg <gregl at nycap.rr.com
>     <mailto:gregl at nycap.rr.com>
>     > <mailto:gregl at nycap.rr.com <mailto:gregl at nycap.rr.com>>> wrote:
>     >
>     >
>     >     On 6/27/20 9:46 PM, DryHeat122 . wrote:
>     >>     On Mon, May 11, 2020 at 12:59 PM DryHeat122 .
>     >>     <dryheat122 at gmail.com <mailto:dryheat122 at gmail.com>
>     <mailto:dryheat122 at gmail.com <mailto:dryheat122 at gmail.com>>> wrote:
>     >>
>     >>         On Mon, May 11, 2020 at 2:41 AM Stephen Worthington
>     >>         <stephen_agent at jsw.gen.nz
>     <mailto:stephen_agent at jsw.gen.nz> <mailto:stephen_agent at jsw.gen.nz
>     <mailto:stephen_agent at jsw.gen.nz>>>
>     >>         wrote:
>     >>
>     >>             On Sun, 10 May 2020 20:20:30 -0700, you wrote:
>     >>
>     >>             >On Sun, May 10, 2020, 7:58 PM Greg
>     <gregl at nycap.rr.com <mailto:gregl at nycap.rr.com>
>     >>             <mailto:gregl at nycap.rr.com
>     <mailto:gregl at nycap.rr.com>>> wrote:
>     >>
>     >>             >Ok thanks I will investigate that.  But it's been
>     >>             working fine with the
>     >>             >current power source for like a year now, and
>     others on
>     >>             this list use it
>     >>             >too.
>     >>
>     >>             <snip><https://forum.mythtv.org>
>     >>
>     >>
>     >>         Thanks for all the suggestions.  I will investigate all of
>     >>         them.  Something I do not see in here is an opinion
>     that some
>     >>         software problem could have evolved.  I was kind of
>     thinking
>     >>         of that as a possibility given that it worked fine for so
>     >>         long then seems to be degrading.  OTOH I never thought
>     of the
>     >>         possibility that the USB connection could be
>     degrading.  I'm
>     >>         going to try Greg's connector, assuming I can get parts
>     >>         during the Apocalypse.  Also, his link specifies Radio
>     Shack
>     >>         parts.  What's Radio Shack?!? ;-)
>     >>
>     >>
>     >>     Well folks this is getting frustrating.  I addressed a possible
>     >>     ventilation issue.  I also unplugged the power cord I had from
>     >>     the Myth box USB and connected it to an old iPad charger
>     rated at
>     >>     5V/2A.  No help.  It wouldn't record anything, no matter
>     how much
>     >>     rebooting and power-cycling. So I concluded the HDPVR was hosed
>     >>     and got a new one (more accurately, a replacement circuit board
>     >>     for it).  Powered it with the same wall wart. Recorded
>     great for
>     >>     a day.  Just turned it on and I have failed recordings and it
>     >>     won't respond when I try to manually play a channel. 
>     Reboot, and
>     >>     it works fine, same pattern as before.
>     >>
>     >>     I finally got a molex connector and am still going to try what
>     >>     Greg suggested, but I really don't think it's a power issue.
>     >>     Apply makes good electronics and that wart has the same
>     specs as
>     >>     the power supply that comes with the HDPVR. The HDPCR isn't
>     >>     overheating.  It's not the HDPVR itself. That only leaves the
>     >>     software on the myth box.  Anyone have ideas how to
>     troubleshoot
>     >>     that?
>     >>
>     >>
>     >      The next time it won't record,try to cat it and see if it
>     >     responds.  This is the command I use,  cat /dev/video0 > test ..
>     >     dmesg for the proper port it's connected to. This may help
>     too see
>     >     if it is the software or not..
>     >
>     >     I am curious were you got the motherboard? There used to be a
>     >     place in Ohio (I believe) ,but they have gone out of business.
>     >
>     > It failed again (despite putting the conf file in place). 
>     Here's the
>     > result:
>     >
>     > steve at steve-EP45-UD3P:~$ cat /dev/video0 > test.ts
>     > cat: /dev/video0: Input/output error
>     >
>     > I don't know how to "dmesg for the proper port it's connected
>     to."  I
>     > think it's just connected to a USB port, but I don't know how to
>     find
>     > out which one. Can you be more specific?
>     >
>     >
>     This works on my system
>
>     dmesg | grep pvr
>     [    6.231302] hdpvr 2-2:1.0: firmware version 0x15 dated Jun 17 2010
>     09:26:53
>     [    6.452748] hdpvr 2-2:1.0: device now attached to video0
>     [    6.452844] usbcore: registered new interface driver hdpvr
>     docbuntu:~$
>
>
> Ok next time it crashes I will try that.
>
>
Just to be clear - this is to confirm which device your hdpvr is 
attached to
such as  /dev/video0 so that you can formulate the proper cat command.

Jim


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