I assume the sound output of your tv card goes through line in. Try KMix to deselect line in.
I love the new Knoppix DVD but have a problem I haven't encountered with any other distro of Linux - previous Knoppix included:
I have an old ATI TV Card in my computer and when my machine boots with Knoppix, it "senses" the card and immediate begins playing TV sound. If I try to load the TV software xawtv, the software works flawlessly - as good as the MS software that was made for the card. However, if I close the program, the sound stays on until I turn off the machine.
Of course I could mute it, but finding out how to fix the problem is so much more fun.
I assume the sound output of your tv card goes through line in. Try KMix to deselect line in.
IBM System X3250 M3 Server 8GB RAM Intel Xeon x3440 2.53ghz (NO HDD)
$41.99
IBM Power S822 8284-22A 12SFF Power8 3.89GHz 6Core 64GB RAM No HDD Server System
$359.99
IBM Server System X3100 M4 | Xeon @ 3.10 Ghz | 8GB | 250GB HDD No OS (IG-PC26)
$96.01
1U IBM x3550 M5 4 Bay SFF SAS3 Server 2x E5-2683 V3 28 Core 128GB DDR4 2x Tray
$318.00
$16000.00
IBM System x3550 M3 Dual Intel Xeon X5650 @2.67GHz 32GB RAM No HDD
$68.50
IBM x3650 M4 Server Intel Xeon E5-2640 (x2) 144GB RAM No HDDs (#4XN7N)
$199.99
IBM SYSTEM X3500 M3 SERVER 7380AC1 2*XEON E5620 2.4GHz 8GB SEE NOTES
$24.18
IBM x3650 M4 2x Xeon E5-2670 2.6ghz 16-Core / 64GB / M5110e / 2x PSU
$229.99
IBM 5362 Server System/36 60MB HDD With Manuals
$7700.00