So i have a tuner askey tview99 (autodetected as card 38) and manually set to tuner 8 (though ive tried several tuners). In xawtv, i can change the channel to channel 3 and get the reception from my digital box. However, in mythtv, it seems to just leave the channel at 1. Is there some sort of fix for this?

Have you got the "Preset Tuner To Channel:" field filled in under the appropriate "Input Connection" and a valid tuner script that exits with a success indicator?

I have set the preset tuner to channel to channel 3 under the appropriate connection. I dont know if i have a valid tuner script. where/what's that?
i know i can change the channel in xawtv, and once i set it to channel 3 in xawtv, it works fine in mythtv

"External Channel Change Command:" is the field just above the preset channel one. You need something in there for the preset to get used, even if it's just a dummy. For testing you can use /bin/true. Normally that would be the name of the script that drives the IR blaster or serial connection, or firewire connection , or ... whatever you use to change the channel on the cable box.

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So maybe i havent explained this correctly. The external channel changer works flawlessly (thanks dct-channel!) but the tuner needs to go to channel 3 first. So, once i put it to channel 3 using xawtv, all is well.

Does you channel change script have an "exit 0" at the bottom or a command that completes successfully to provide a "good" exit code?

Do you have the "Input Connection" set up for the "tuner" input and only that?

well you could be on to something here. mythtv was locking up during channel changing until i told the dct-channel to just change the channel and not wait for feedback from the digital box. i checked the output while this was happening, and basically dct-channel attempted to change the channel 5 times, waiting several seconds in between, but never got the information that it had changed. However, the first try dct-channel made was successful, it just never realized. So does the new version of mythtv require a code to be set after a successful change?

As far as I'm aware it has always cared about the exit code. That is the normal way a parent process in Unix knows if the child process thought it was successful. If the tuning script returns a non-zero exit code, mythtv thinks it failed.

well then that is a fantastic point. ill broswe through the script and find out what's wrong, or hardwire the return value in. i'll let you know
thanks

edit... so i just quickly browsed through the code. It seems that using the blind mode should return 0 regardless of what happens. So, this should be ok.

this is included in main()

if (blind) {
blind_channel(chan);
if (!quiet) printf("%d\n",chan);
return 0;
}

blind_channel(int) returns a void
so regardless, this should terminate successfully

Hi,
Just as a thought, do you have a channel 3 in your channel setup? mythtv-setup Edit Channels. It won't change to a channel that doesn't exist, even if you have it as preset.

Mike

so i guess that brings up another interesting point. if i run mythtv-setup and go to the input screen, i can scan for channels (and it finds that only channel 3 has a signal). so I guess mythtv has the ability to change the channel of this card, it just doesnt do so.... is there a command line that i could use to manually set this card to channel 3 at startup? that's the easiest workaround i can think of...

ivtvctl

_________________
HP VL400 (PIII 866), Skystar2 2.6D, PVR350, Nvidia FX5200, 384MB, 200GB, KnoppMyth R5.5

well i'd just like to say BOOYAH! and thanks for everyone's help

this seems to work wonders right here....


i'll stick it into /home/mythtv/.fluxbox/apps