> > Do you have any idea where these strange black lines come from? > > http://members.a1.net/schelander/blacklines.jpg > > > Try alterig the pci latency of the card with setpci. Thanks for answer! Change latency in which way (increase/decrease) to which value? Thanks Robert 00:0b.0 Multimedia video controller: Brooktree Corporation Bt878 (rev 11) Subsystem: Hauppauge computer works Inc. WinTV/GO Flags: bus master, medium devsel, latency 32, IRQ 10 Memory at fa000000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2 00:0b.1 Multimedia controller: Brooktree Corporation Bt878 (rev 11) Subsystem: Hauppauge computer works Inc. WinTV/GO Flags: bus master, medium devsel, latency 32, IRQ 10 Memory at f9800000 (32-bit, prefetchable) [size=4K] Capabilities: [44] Vital Product Data Capabilities: [4c] Power Management version 2