On Tue, 18 Jan 2005 10:55:44 -0000, Nick <[EMAIL PROTECTED]> wrote: > > I've been following Jarod's guide for FC3, and have got most things > > working. Unfortunately I'm having great difficulty getting my PVR > > 350's TV out to work. > > > > If I run the commands > > > > # /sbin/rmmod saa7127 > > # /sbin/modprobe saa7127 test_image=1 > > > > I see the test pattern correctly, however if I try to pipe video > > through the tv out, with the commands: > > > > # /usr/bin/ivtvfbctl /dev/fb1 -noglobalalpha -localalpha > > # dd if=/dev/video0 of=/dev/video16 bs=64k > > I just get what looks like a blank screen with a load of interference > overlayed. > > First unload the test image. Which input have you selected for output - you > may be seeing the tuner which is likely not yet tuned to a signal. Can you > see any movement on the TV or just snow? > > Check to make sure your devices exist: > > # ls -l /dev/video* > > Also, check your system logs for the ivtv init output, this can provide > useful info on what's happening. > > Now repeat these two commands, changing x in the first command for values > between 0 and 9: > > # /usr/bin/ivtvctl -p x > # dd if=/dev/video0 of=/dev/video16 bs=64k > > This will go through the card's inputs in turn - hopefully you'll see > something on the TV on one of them - have you got a composite or S-Video > source hooked up to the card? > > If /dev/fb1 is your ivtv framebuffer you can also try: > > # /usr/bin/ivtvfbctl /dev/fb1 -globalalpha -nolocalalpha > > or > > # /usr/bin/ivtvfbctl /dev/fb1 -alpha -on -globalalpha -nolocalalpha (I have > to use this one) > > to try to get rid of the lines on the screen when ivtv loads. > > > I've also tried to run X through the tv out, using the appropriate > > xorg.conf file. In this case I get a static screen made up of lots of > > tiny dots that looks pink/purple/blue from a distance. > > Try and get normal TV-out working first, then X once this is working > normally. > > Check here for ivtv help: > http://www.gossamer-threads.com/lists/ivtv/devel/ - lots of valuable info. > > Nick > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.7.0 - Release Date: 17/01/2005 > >
Thanks for your reply, Here's a better explanation of what happens: # /sbin/rmmod saa7127 [completely blank screen on tv] # /sbin/modprobe saa7127 test_image=1 [test image of coloured lines on tv] # /sbin/rmmod saa7127 [back to blank screen] # /sbin/modprobe saa7127 [black and white fuzzy background, overlaid with 5-6 horizontal and diagonal flickering lines] #/usr/bin/ivtvfbctl /dev/fb1 -noglobalalpha -localalpha [background goes darker, still have flickering lines] #dd if=/dev/video0 of=/dev/video16 bs=64k [sound comes out of the tv's speakers. No change to the screen] ctrl-c # /usr/bin/ivtvfbctl /dev/fb1 -alpha -on -globalalpha -nolocalalpha[background goes black, still have the flickering lines but not so bad]. #dd if=/dev/video0 of=/dev/video16 bs=64k [sound comes out of the tv's speakers. the background changes to something that could be a very distorted black and white tv signal, but could not be, still have those flickering lines] ctrl-c Just to check that my tv signal is ok #cat /dev/video0 > /tmp/test_capture.mpg #mplayer -vo xv /tmp/test_capture.mpg results in a perfect picture through the monitor. I couldn't find anything in the logs and # ls -l /dev/video* shows that my devices exist. I'm in the UK, so I'm using an S Video -> Scart cable going into a PAL TV. Am I right in thinking that as the test patter displays ok, I can rule out a problem with my cable? Thanks, Chris
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