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Help with configuration problems with PVR-350
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Author:  rom24 [ Thu Oct 14, 2004 7:54 pm ]
Post subject:  Help with configuration problems with PVR-350
Hi:

1. My friend threw his old P3 700MHz PC at me some time back, and I've been using it as a Linux server in my bedroom. I want to add MythTV functionality to it, so it can serve as a Bedroom Entertainment Center. (I call it BECky!!)

2. I put in a new PVR-350 into it, a 30GB HDD, a PCI NIC. Installed KnoppMyth R4V4. On startup, it detected the network, the PVR-350 card, started all the daemons (beautiful!). I then configured MythTV through the setup as instructed in the MythTV HOWTO. The remote control works!

3. Now, when I go to 'Watch TV', I get a prompt saying that 'Could not open /dev/dsp. Continue without audio?'. Is this because it's not detected my sound card? Anyway, I say Yes and hope to see TV, but the screen goes blank! I have an Antenna, and everything is connected correctly. What might be happpnening here?

4. One part of my configuration that I am suspicious of is teh mapping of Video sources. the only one I mapped was Antenna to TV Tuner. Others I left as is.

5. Also, on going to the program guide, I am not able to see any channel listings. My Zap2It account is corectly set us, since I can see the channels on the web frmo another computer.

6. Do I have to run any other daemons from the command line?

TIA,
Rommel
Author:  RacerX [ Thu Oct 14, 2004 9:39 pm ]
Post subject: 
Hello

Here are a couple of thoughts.

First run lspci -v | less
and see what it detects for your sound

Second, try recompiling the IVTV drivers and see if that helps
The drivers can be found here

http://67.18.1.101/~ckennedy/ivtv/

Here is the syntax these are for the PVR-250 but they should be close

1) cd /usr/src
2) tar xvfj linux-2.4.25-chw.tar.bz2
3) cd /usr/local/lib/ivtv/
4) mv driver/ driver.old
5) Download the ivtv 106u version to something like /usr/local/src/
6) Extract it (tar zxvf ivtv-0.1.10-pre2-ck106u.tgz)
6) go inside the ivtv download folder you just untar'd
7) copy the driver folder cp -a driver/ /usr/local/lib/ivtv/
cd /usr/local/lib/ivtv/driver/
9) make clean
10) make install
11) if you get a warning, about deleting the msp3400.0 file, do it...or just rename it with something like:
mv /lib/modules/2.4.25-chw/kernel/drivers/media/video/msp3400.o
/lib/modules/2.4.25-chw/kernel/drivers/media/video/msp3400.o.old
12) vi /etc/mythtv/modules/ivtv
- I forget the actual contents. But it's something like (i'll try to edit this post tonight after I look it up).
alias char-major-81 videodev
alias char-major-61 lirc_i2c
options ivtv card=85 type=39
options tuner type=39
options msp3400 once=1 simple=1
add below ivtv msp3400 saa7115 tuner
add above ivtv lirc_dev lirc_i2c

13) update-modules
14) depmod
15) reboot. Do <ctrl><alt><f1> and log back in as root.
16) lsmod | grep ivtv
You should see about three lines. If so, goto step 19. IF you don't, do "modprobe ivtv | less"
Carefully look for any errors. Take your time and go line-by line. Look for anything that says undefined, or unknown. Look for type 85 card. Maybe unknown id's of 0016, 4009, etc. I can't stress this enough. Carefully read that output line by line.
17) lsmod | grep ivtv
1 If you see three lines, your good to go Goto step 19
19) Flip back to mythtv <Ctrl-alt-f7>. Try the tuner. If it works.
20) Reboot regardless if it worked or not.
21) If it worked before rebooting, and now it doesn't add a line to
/etc/modules with a line "ivtv" by itself. I'm not sure of the placement yet. I have mine on the bottom. I get a few warnings on boot, but it works. Can maybe move this up some.
22) If never worked before that reboot. Sorry, i don't know. I'm a noobie.
Some suggestions: Try an ivtv driver later than 106u - that was the driver released the day i setup my box. It appears a new driver is released every day.

These instructions are credited to Tazzytazzy, Xsecrets, and Cesman

Third, if you hear sound and no video you may have an IRQ conflict so try moving the card to a different pci slot. I recently had a conflict with my Oxygen Video card that caused the screen to be blue but the sound worked. When I changed out the Video card this fixed the problem.

Fourth, sometimes the listings do sync up on the first time. So open Xterm and run the command Mythfilldatabase, you might have to go though this twice. If you run Mythtv-setup you can check out the Channels in the fifth screen, if they are there then you should be ok

Hope this helps
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