Hi guys, I have been trying to get DVB working under Gentoo for quite some time now. At first my goal was to receive encrypted DVB-S through a PCI card. That adventure took me through a list of cards: Terratec Cinergy without a CAM module - this could recieve Free TV Pinnacle systems card with a CAM module - This could only recieve free TV Hauppauge-NEXUS-S card without a CAM module Hauppauge-NOVA-S with a CAM module. I actually made the last one work, but it could only tune for about 15 minutes and I often needed to coldstart the PC. I gave up on the DVB-S units almost a year ago and have now moved toward DVB-T cards, hoping that life without a CAM module is easier. Denmark recently started DVB-T services. This adventure has now taken me through 4 different cards. A pinnacle stick (USB ID: eb1a:2870) that only seem to reveal a analog tuner. So no luck with that yet. A AGK stick (USB ID: 15a4:9020), that is recognized as an af9005 device, but it cant scan any services. Two Hauppauge Nova-T-USB sticks (2040:7070). that could scan and tune, but had alot of noise in the signal. I tried variuous firmwares that finally ended up killing one of the units. A Hauppauge NOVA-T-PCI, which sort of works but there is a lot of noise in the signal. I feel I am getting closer, but it is very frustrating to spend alot of time and money getting nowhere. So i figured I would try to explain what I have done, hoping for someone to point out some obvious mistake. I have tried a range of PC's using Gentoo on all of them. The one I use now is a Core2 Duo running "i686 mode". (I tried installing an Amd64 profile, but that really made the mercurial v4l-dvb package complain.) I do a normal gentoo stage3 install following http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?full=1. On top of that i have installed "vanilla-sources", so my kernel is 2.6.23.9. Then I fetch the v4l-dvb and dvb-apps packages (as root) using: hg clone http://linuxtv.org/hg/v4l-dvb hg clone http://linuxtv.org/hg/dvb-apps then i do make && make install in both of the directories and reboot. Then I enter the v4l-dvb directory and do a "make reload". This seem to load modules, but with very mixed results. I read "dmesg" to see if my device has been detected. If this wakes up one of my devices I usually do a scan for channels using: scan /usr/share/dvb/dvb-t/dk-All (I usually use one device at a time, to avoid mixups) This evening this procedure revealed a poor subset of the channels I know is available in my signal. All very noisy. I try to record using: gnutv -out file test.mpg -timeout 5400 DR1 Thereafter i play it using VLC vlc test.mpg This reveals a noisy video stream. Sound is skipping and the image is very distorted. I have some ideas on where the error lies, but not the knowledge to proceed so I have cooked up some questions: 1) What is the right kernel to use with the latest v4l-dvb checkout, and where can I figure out which to use. 2) What is the proper firmware for DVB cards. I killed a Nova-T-USB stick trying a bad firmware, and I suspect bad firmwares to be partly responsible for some of my problems. How do I make sure I have the right firmware? 3) Is the ForwardErrorCorrection algorithm not supported by the v4l-dvb drivers. I get crisp images on Windows, but noisy on Linux? 4) What is the proper procedure for rebuilding and installing the v4l-dvb modules. "Make menuconfig" in the v4l-dvb directory gives me some options. What should I enable. And perhaps more important what should be disabled in the kernel menuconfig. Should I do something after the modules are built? What is the proper way to give modules options? How do I clean out old modules? I sure could use some guidance here. I hope my explanation pops up some obvious reason for my poor results and perhaps some answers. Thank you in advance, and sorry for the lengthy mail. Jesper Taxbøl _______________________________________________ linux-dvb mailing list linux-dvb@xxxxxxxxxxx http://www.linuxtv.org/cgi-bin/mailman/listinfo/linux-dvb
