do (took me 1 year to find out): Hardware: 1.plug the PCTV-beast into a PCI slot with no IRQ-Sharing (lock into Interrupt Request Table for this Mainboard) BIOS: 2.set Delayed Transaction to on 3.set PCI 2.1 Latency Compliat to on 4.Give PCI-Slot with PCTV-beast a free usable IRQ (lock into Standard Interrupt Assignments) 5.in PCI IRQ Resource Exclusion set the IRQ to [Yes] with Athlon: 6.use newest Kernel or use kernel-parameter: mem=nopentium 7.compile newest 2.4 kernel with CONFIG_IDEPCI_SHARE_IRQ = N CONFIG_IDEDMA_PCI_AUTO = Y 8.compile and install newest bttv-0.8.xxx 9.in /etc/modules.conf (deb: /etc/modutils/aliases, don't forget update-modules): alias char-major-81 bttv options bttv card=52 radio=1 post-install bttv modprobe -k msp3400 ; modprobe -k tuner ; v4lctl capture grabdisplay post-remove bttv rmmod tuner ; rmmod msp3400 ; rmmod tvaudio ; rmmod vidoedev ; rmmod i2c-algo-bit 10.be happy