[mythtv-users] Begging for help with live TV freeze

[Kevin]

        Now this could be part of the reason for my problems.

        I have an antenna feed so some of my signals are very weak. I was having the freeze up far more frequently until I got rid of the non-existent or poor channels. The channels I have left are okay for the most part but still far below cable quality. Could noise in the input signal be the cause of all these lockups? This seems odd as the recording side (mythbackend) still works fine when the lockups occur. It is just the playback (recorded or live-which is really recorded anyway) that gets stuck. Could a glitch on the input side cause the output side to freeze? Perhaps there is an error condition being reported by the PVR-350 that is not being processed by the ivtv drivers?

        I am grasping here but as I said, the freeze ups did occur more frequently when I had the non-existent (signal wise) channels still in my database. Although how this would be related to doing things on the frontend (forward/reverse, pause) beats me. Maybe there is more than one thing causing the lockups and noise is just one of them.

At 11:56 AM 2003-12-09, Curtis Wood wrote:
>   Ive been playing around with MythTV, finally have it reliably running
>on my cable system. At first I was having a few of these lock ups my
>self, I resolved the lock ups by finetuning the channels. Essentially it
>looks as though MythTV does not like weak signals. To get around this, I
>tuned the channel untill the color was way to much (assuming a very good
>signal), and then used the controls to lower everything to a comfortable
>level - after this I just got the staggering playback from CPU
>overload... I have the ATV-TV Wonder (VE) and the Pinnacle TVCard - both
>had the same issue, Im currently piping everything through the composite
>which makes things a lot better (no tuning needed) - MythTV has been
>running for two three days straight now (continuously) with no problems
>:-)
>
>Curtis
>
>On Tue, 2003-12-09 at 06:08, Alan Snyder wrote:
>> --- "Patrick E. McKnight" <pem at theriver.com> wrote:
>> > Alan Snyder wrote:
>> > > A number of people, myself included, have reported
>> > > frontend freezes in live TV, the symptom being
>> > frozen
>> > > picture and sound, the frontend spitting out
>> > "Waited 2
>> > > seconds for data to become available, waiting
>> > > again...", and the backend seemingly working
>> > normally.
>> > >  
>> > > 
>> <snip> 
>> > Let me see if I can help you here.  I too had the
>> > screen freezes but I 
>> > did the following and now it no longer freezes. 
>> > First, I originally 
>> > compiled bttv into the kernel - big mistake.  I'm
>> > using 2.6.0-test11 on 
>> > gentoo and by recompiling the bttv, btaudio, etc as
>> > modules, I was able 
>> > to control the driver configs in the modules.conf
>> > (or whatever file you 
>> > use to control these things).
>> > 
>> > BTW, I followed the directions from:
>> > 
>> > http://www.linuxlogin.com/linux/ati_tv.php
>> > 
>> > and in particular I used the following (since I was
>> > using the ATI card 
>> > myself):
>> > 
>> > alias char-major-81 bttv
>> > options bttv card=1 autoload=0 radio=0
>> > post-install bttv insmod tuner type=2
>> > 
>> > I now have some other niggling problems but I am
>> > getting close to having 
>> > a full-working and stable MythTV setup.  So my
>> > scientific (!) wild ass 
>> > guess is the kernel drivers.  Have you tried to load
>> > them at boot rather 
>> > than compiling them in?
>> > 
>> Hmmm... bttv was installed by my Mandrake 9.1 install
>> and it's always just worked.  lsmod lists
>> 
>> bttv                   78496   0  [lirc_gpio]
>> videodev                7872   3  [bttv]
>> i2c-algo-bit            9064   1  [bttv]
>> i2c-core               21192   0  [tuner bttv
>> i2c-algo-bit]
>> soundcore               6276   0  [snd bttv]
>> 
>> My modules.conf is
>>  
>> alias char-major-61 lirc_gpio
>> probeall usb-interface usb-uhci
>> above snd-via82xx snd-pcm-oss
>> alias eth0 3c59x
>> alias sound-slot-0 snd-via82xx
>> options bttv card=78 tuner=2 radio=1 gbuffers=4
>> alias /dev/nvidia*   nvidia
>> 
>> modules.devfs, which is auto-generated when devfs
>> starts, has a comment that reads
>> 
>> #   Sample configurations that you may want to place
>> in /etc/modules.conf
>> #
>> #alias          sound-slot-0            sb
>> #alias          /dev/v4l                bttv
>> #alias          /dev/misc/watchdog      pcwd
>> #alias          gen-md                  raid0
>> #alias          /dev/joysticks          joystick
>> #probeall       scsi_hostadapter        sym53c8xx
>> 
>> I'm not sure what to make of that.
>> 
>> __________________________________
>> Do you Yahoo!?
>> Protect your identity with Yahoo! Mail AddressGuard
>> http://antispam.yahoo.com/whatsnewfree
>> 
>> ______________________________________________________________________
>> 
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>_______________________________________________
>mythtv-users mailing list
>mythtv-users at mythtv.org
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users