[mythtv-users] hdpvr rmmod hanging

[Greg]

On 10/18/2014 04:19 PM, Ken Truesdale wrote:
>
> I’m new to the HD-PVR and have recently installed it on my working 
> backend.  It is mostly working now – I can tune live TV using it and 
> recordings fire off a channel change.  I’ve got a problem with my 
> channel change script when starting a recording (which doesn’t happen 
> with live TV) but I should be able to figure that out on my own. But I 
> also see that the HD-PVR sometimes doesn’t stop recording.  The show 
> it tried to record (but recorded a different program instead due to 
> the aforementioned script issue) lasted a half hour and MythTV seems 
> to have correctly stopped recording at the half hour mark even though 
> the HD-PVR didn’t get the notification to stop recording.
>
> To try and debug it, I thought about looking into a script to reload 
> the hdpvr module.  Seemed simple enough and there are script examples 
> out there.  But when I try typing the following in the command line:
>
>      sudo modprobe -r -v hdpvr
>
> the command just hangs there indefinitely showing:
>
>     rmmod hdpvr
>
> I can kill the sudo process that kicked off the modprobe but I can’t 
> kill the modprobe process.  The only way I have found to clear the 
> problem is a reboot and even then, during shutdown, the process won’t 
> die and hangs the computer on the waiting for processes to end step 
> requiring me to push and hold the power button.  Nasty. Clearly 
> something is very wrong somewhere.
>
> This is what I see in dmesg before trying the modprobe –r:
>
>     [   15.456135] hdpvr 1-3:1.0: firmware version 0x1e dated Mar  7 
> 2012 08:25:15
>
>     [   15.966780] hdpvr 1-3:1.0: device now attached to video0
>
>     [   15.966841] usbcore: registered new interface driver hdpvr
>
> And this is what I see from dmesg after the modprobe –r starts (and 
> then hangs):
>
>     [   15.456135] hdpvr 1-3:1.0: firmware version 0x1e dated Mar  7 
> 2012 08:25:15
>
>     [   15.966780] hdpvr 1-3:1.0: device now attached to video0
>
>     [   15.966841] usbcore: registered new interface driver hdpvr
>
>     [  846.134280] usbcore: deregistering interface driver hdpvr
>
>     [  846.134308] hdpvr 1-3:1.0: device video0 disconnected
>
> If I don’t plug in the USB connection to the HD-PVR when I boot up, 
> the hdpvr module doesn’t get loaded, of course.  So I can modprobe 
> hdpvr and it loads fine.  Then I can modprobe –r no problem.  The 
> inability to remove the hdpvr module could be related to the way the 
> device keeps recording sometimes.  So I’m hopeful that fixing one will 
> fix the other.  But I’m out of ideas about what to check or what could 
> be the source of the problem.
>
> I am running Mythbuntu so my setup for the HD-PVR was pretty easy.  
> Mostly just plugged it in and set it up in the Backend setup.  A few 
> extra steps to enable the IR flashing.  And I did start with updating 
> the firmware to the latest using a Windows computer.
>
> I have checked my BIOS settings for USB settings.  I don’t have much 
> in there for options (6 year-old ASUS BYO) and what is there seems to 
> things set appropriately, at least as far I can tell.
>
> Anybody have suggestions on where to look to chase down a problem like 
> this (or these, as the case may be)?  Thanks!!
>
> Ken.
>
>
>
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hdpvr 1-5:1.0: firmware version 0x15 dated Jun 17 2010 09:26:53

This is the firmware that I have been using..I have never experienced 
any of the problems you are having.. The hdpvr has been bullet proof for 
me..  The only other thing is I use firewire for channel changing..
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