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 Post subject: just static
PostPosted: Wed Dec 06, 2006 8:17 pm 
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Joined: Wed Dec 06, 2006 8:13 pm
Posts: 6
I've been trying to get mythtv working for quite some time and this is my first time to use knoppmyth and everything seemed to set up correctly but when I go to watch tv I don't ever get anything but static. I am using a pvr-150 and I am just trying to pick up a regular broadcast as I don't have cable. Any help would be appreciated.


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 Post subject: Re: just static
PostPosted: Wed Dec 06, 2006 8:25 pm 
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Joined: Wed Nov 16, 2005 8:55 pm
Posts: 1381
Location: Farmington, MI USA
wts97m wrote:
I've been trying to get mythtv working for quite some time and this is my first time to use knoppmyth and everything seemed to set up correctly but when I go to watch tv I don't ever get anything but static. I am using a pvr-150 and I am just trying to pick up a regular broadcast as I don't have cable. Any help would be appreciated.
Forgive me if this sounds flippant, but what do you have the PVR-150 attached to? An antenna? If you connect that same source to your TV do you get good reception?


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 Post subject:
PostPosted: Wed Dec 06, 2006 8:29 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
See this troubleshooting page - http://www.knoppmythwiki.org/index.php?page=BlackScreenWatchingTV
If you're using an antenna you should be using the us-broadcast frequency set. Also, with PVR-150s pay special attention to the section on unrecognized tuner chip issues.


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 Post subject:
PostPosted: Wed Dec 06, 2006 8:45 pm 
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Well now I am just going to have to sound stupid, but this is how it is. I have a coax cable attached to the card which goes out my window and is then slung up to my roof where it acts as a large antenna. I have a modded XBOX running Sagetv and it works perfectly with that program but will not show a picture in mythtv. I've never been so frustrated trying to set up a program before.


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 Post subject:
PostPosted: Wed Dec 06, 2006 9:24 pm 
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Joined: Wed Nov 16, 2005 8:55 pm
Posts: 1381
Location: Farmington, MI USA
wts97m wrote:
I have a modded XBOX...

Sorry, I wouldn't have a clue here. I hope someone can give you a hand...


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 Post subject:
PostPosted: Wed Dec 06, 2006 10:24 pm 
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I am using the broadcast frequency set. Is there anything I can type to give a log that you can look at that may be beneficial?


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 Post subject:
PostPosted: Wed Dec 06, 2006 11:04 pm 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
Yes. If you follow the link to the KnoppMyth wiki page I provided above you'll find references to the "CheckingLogFiles" page which has any number of things to look at in the logs, along with the exact commands needed. This is why I posted the link for you here. I also wrote most of the content on those pages so we could could just post the links, instead of filling the forums with hundreds of repetions of the same stuff. If you think I sound mildly irked and a bit pendantic I apologize, but think how strained your patience would get under these circumstances... :(


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 Post subject:
PostPosted: Wed Dec 06, 2006 11:15 pm 
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Posts: 6
I read through the link and tried each part but nothing is working for me. Maybe I'm just not spacing things out correctly. I even typed in all the logs but it doesn't return anything, just says no directory. Yes I have been on the other side of this especially when it comes to helping others with their xbox's but you also have to understand what it is like for someone with no experience. I have followed your link as well as experimenting on my own and I don't know what to do with this card. It seems like I can almost hear something over the static but I can never see anything. Well, thanks for your help anyway, I'll try to work on it for another couple of days on my own and then probably revert back to SageTV but if anyone can think of something else, let me know.


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 Post subject:
PostPosted: Wed Dec 06, 2006 11:25 pm 
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Posts: 9551
Location: Arlington, MA
Are you logging in as root? You need root privileges to browse most of the system logs.

Are you able to get to the /var/log directory? If that's missing your system is broken in some important way. Remember this is Unix so _case matters_. See the LinuxTips page for more imformation on this topic.

I'm guessing that the very first diagnostic on the CheckingLogFiles page is your issue. If that returns nothing when you're logged in as root and using the commands exactly as shown, then try the next couple. If you get to the third one post the results here so we can look at them.


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 Post subject:
PostPosted: Wed Dec 06, 2006 11:57 pm 
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I have been logging on as root and nothing has given me a log including typing /var/log


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 Post subject:
PostPosted: Thu Dec 07, 2006 12:00 am 
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I typed in the first command dmesg | grep "tuner model is TCL M2523_.*_E" which returned something like tuner model tcl m2523_5n_e but any other command I type returns something to the effect of missing directory or not a directory.


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 Post subject:
PostPosted: Thu Dec 07, 2006 12:14 am 
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Joined: Thu Mar 25, 2004 11:00 am
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Location: Arlington, MA
Ah, go back and look at the LinuxTips page again. To get to a directory you use the "cd" command e.g. "cd /var/log". Here is an example session from my machine (hand colorized: machine output in black, typed commands in red, comments in green):
Quote:
root@black2:~# id # Who am I?
uid=0(root) gid=0(root) groups=0(root)
root@black2:~# hostname # What machine?
black2
root@black2:~# pwd # Present working directory?
/root
root@black2:~# cd /var/log # Notice how the prompt changes
root@black2:/var/log# ls -altr | tail -20 # Show the 20 most recently changed
-rw-r----- 1 mysql adm 20 Dec 4 06:25 mysql.log.3.gz
-rw-r----- 1 root adm 20 Dec 4 06:25 mysql.err.3.gz
-rw-r----- 1 root adm 954 Dec 5 06:25 syslog.1.gz
-rw-r----- 1 mysql adm 20 Dec 5 06:25 mysql.log.2.gz
-rw-r----- 1 root adm 20 Dec 5 06:25 mysql.err.2.gz
-rw-r----- 1 root adm 9982 Dec 6 06:25 syslog.0
-rw-r----- 1 mysql adm 20 Dec 6 06:25 mysql.log.1.gz
-rw-r----- 1 mysql adm 0 Dec 6 06:25 mysql.log
-rw-r----- 1 root adm 20 Dec 6 06:25 mysql.err.1.gz
-rw-r----- 1 root adm 0 Dec 6 06:25 mysql.err
drwxr-s--- 2 mysql adm 4096 Dec 6 06:25 mysql
drwxr-xr-x 13 root root 4096 Dec 6 06:25 .
drwxrwsr-x 2 mythtv mythtv 4096 Dec 6 15:35 mythtv
drwxr-xr-x 2 root root 4096 Dec 6 19:10 ntpstats
-rw-rw-r-- 1 root utmp 28416 Dec 6 19:45 wtmp
-rw-rw-r-- 1 root utmp 30952 Dec 6 19:45 lastlog
-rw-r--r-- 1 root root 45212 Dec 7 00:12 XFree86.0.log
-rw-r----- 1 root adm 18396 Dec 7 00:55 messages
-rw-r----- 1 root adm 7694 Dec 7 01:05 syslog
-rw-r----- 1 root adm 57359 Dec 7 01:05 auth.log
root@black2:/var/log# dmesg | grep "tuner model is TCL M2523_.*_E" # I don't have one of these, you might
root@black2:/var/log#


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 Post subject:
PostPosted: Thu Dec 07, 2006 12:23 am 
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Joined: Thu Mar 25, 2004 11:00 am
Posts: 9551
Location: Arlington, MA
wts97m wrote:
I typed in the first command dmesg | grep "tuner model is TCL M2523_.*_E" which returned something like tuner model tcl m2523_5n_e but any other command I type returns something to the effect of missing directory or not a directory.

Well there's your problem. Follow the link from the diagnostic to the prescription.

Again the LinuxTips page contains a description of how to edit a file to add the option settings. You don't have to become a Linux expert to get a KnoppMyth system working, but you do need to learn the basics. Consider it like learning to drive in snow for a southerner, not something you'll need everyday but vital when the occasion arises.


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