So, I've read through a number of great threads on here and the 350-tvout howto, all great.

Unfortunately I ran into a problem when I tried to use the fb for the tvout with the pvr-350.

I can get the old dd method to work for /dev/video to /dev/video16 just fine, so that part of things is configured correctly. MythTV can even output to the tv when I'm running the front end on a monitor.

However when I try and switch X to output using the fb, the screen just stays black. No error, no dying, it's as if it's trying to output to.... something, and it thinks it's succeeding. For curiousity sake I even tried using mplayer to output to the /dev/fb1 device, it as well thinks it's outputting to something... some mysterious screen. I've tried mplayer to /dev/fb0 from the command line, it displays quite nicely on my monitor, so again, the fb dirver seems to be working.

I've plugged both the svideo and composite outputs into my tv to see if it might just be trying to putput to the wrong one, no luck.


Anyone have any ideas? Below I'm pasting a number of my config files in case anyone can spot a dumb mistake I made.... Thanks!

/etc/mythtv/modules/ivtv:
alias char-major-81 videodev
alias char-major-61 lirc_i2c
options ivtv debug=1
options tuner type=2
options saa7127 enable_output=1 output_select=0
options msp3400 once=1 simple=1
add below ivtv msp3400 saa7115 saa7127 tuner
add above ivtv lirc_dev lirc_i2c ivtv-fb

/etc/modules.conf
# This is for WinTV PVR-350 IVTV
alias char-major-61 lirc_i2c
alias char-major-81 videodev
alias char-major-81-0 ivtv
alias char-major-81-1 bttv
post-install ivtv-fb /usr/local/bin/ivtvfbctl /dev/fb1 -globalalpha -nolocalalpha -alpha 0 # Added to get rid of the 20 white interlaced lines

/etc/X11/XF86Config-4:
Section "Monitor"
Identifier "NTSC Monitor"
HorizSync 30-68
VertRefresh 50-120
Mode "720x480"
# D: 34.563 MHz, H: 37.244 kHz, V: 73.897 Hz
DotClock 34.564
HTimings 720 752 840 928
VTimings 480 484 488 504
Flags "-HSync" "-VSync"
EndMode
EndSection

Section "Device"
Identifier "Hauppauge PVR 350 iTVC15 Framebuffer"
Driver "fbdev"

### change fb1 to whatever number you got in the previous section
Option "fbdev" "/dev/fb1"

### change the busid to whatever is reported by lspci. Note that
### output of lspci is hex, so add a preceding "0x" to the BusID
BusID "0:0x09:0"
EndSection

Section "Screen"
Identifier "TV Screen"
Device "Hauppauge PVR 350 iTVC15 Framebuffer"
Monitor "NTSC Monitor"
DefaultDepth 24
DefaultFbbpp 32
Subsection "Display"
Depth 24
FbBpp 32
Modes "720x480"
EndSubsection
EndSection

Section "DRI"
Mode 0666
EndSection

/var/log/XFree86.0.log line of interest:
(EE) FBDEV(0): FBIOPAN_DISPLAY: Invalid argument

Hrm, I found the problem, sort of.

It turned out it was this line:
post-install ivtv-fb /usr/local/bin/ivtvfbctl /dev/fb1 -globalalpha -nolocalalpha -alpha 0

Now I vaguely understand about these frame buffers. I thought I once read that Myth is suppose to adjust the frame buffer settings when it goes between tv and menu modes. By taking out the above line, X suddenly worked (from what I understand that line was making the fb transparent) but now when I go to watch playback IT's black but with sound.

So, how do I make Myth switch this back and forth as it goes between the two modes?

Assistance greatly appriciated, Thanks.

Ah-ha!

For anyone stubling upon this with similar problems... I found the solution....

http://mysettopbox.tv/phpBB2/viewtopic.php?t=697

You need to remake the node that is created incorrectly.

Yay Myth!