Hey guys... I've been running a r4v? system for the past year with no problems. The box is an AMD 2200+, nforce chipset, 512M, etc. It had two software capture cards, an additional soundcard, a serial card, and a GEForce 2 agp video card.
Last week I picked up an Avermedia M179 to replace one of the software capture cards and the extra sound card. I took out those two cards and put the M179 in the top pci slot. The bios said it couldn't find the floppy controller when I tried to boot. Weird. I pulled the card and the box booted without problem. I moved the card to a lower slot and was able to get it to work after updating the ivtv drivers. This worked fine for a while, but then for no explainable reason, the M179 would not display video (dreaded black screen on 'watch live tv'). I pulled the other software capture card and tried to get the M179 working again. Still nothing. After fighting it a while I pulled the serial card and the M179 started showing video again! I moved the serial card from slot to slot until I found one that allowed the video to be displayed. As it turns out it was the top pci slot. I tried to get the software capture card back in, but was never able to get it to work while having the M179 and serial card in at the same time.
Doing a little research, it seems like the M179 and serial card both are using IRQ11. Is this part of my problem? Is this why I had the intermittent success?
Here's some info on the system (note that the software capture card is not in the box at the moment):
mythtv@mythtv:~/upgrade $ lspci -v
0000:00:00.0 Host bridge: Silicon Integrated Systems [SiS] 735 Host (rev 01)
Flags: bus master, medium devsel, latency 32
Memory at d0000000 (32-bit, non-prefetchable) [size=64M]
Capabilities: <available only to root>
0000:00:01.0 PCI bridge: Silicon Integrated Systems [SiS] Virtual PCI-to-PCI bridge (AGP) (prog-if 00 [Normal decode])
Flags: bus master, fast devsel, latency 64
Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
Memory behind bridge: cde00000-cfefffff
Prefetchable memory behind bridge: b5c00000-c5cfffff
0000:00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS85C503/5513 (LPC Bridge)
Flags: bus master, medium devsel, latency 0
0000:00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 [IDE] (rev d0) (prog-if 80 [Master])
Subsystem: Silicon Integrated Systems [SiS] SiS5513 EIDE Controller (A,B step)
Flags: bus master, fast devsel, latency 128
I/O ports at ff00 [size=16]
0000:00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] Sound Controller (rev a0)
Subsystem: C-Media Electronics Inc: Unknown device 0300
Flags: bus master, medium devsel, latency 64, IRQ 10
I/O ports at dc00 [size=256]
I/O ports at d800 [size=64]
Capabilities: <available only to root>
0000:00:03.0 Ethernet controller: Silicon Integrated Systems [SiS] SiS900 PCI Fast Ethernet (rev 90)
Subsystem: Silicon Integrated Systems [SiS] SiS900 10/100 Ethernet Adapter
Flags: bus master, medium devsel, latency 64, IRQ 5
I/O ports at d400 [size=256]
Memory at cffdd000 (32-bit, non-prefetchable) [size=4K]
Expansion ROM at cffa0000 [disabled] [size=128K]
Capabilities: <available only to root>
0000:00:09.0 Serial controller: NetMos Technology PCI 9835 Multi-I/O Controller (rev 01) (prog-if 02 [16550])
Subsystem: LSI Logic / Symbios Logic 2S (16C550 UART)
Flags: medium devsel, IRQ 11
I/O ports at d000 [size=8]
I/O ports at cc00 [size=8]
I/O ports at c800 [size=8]
I/O ports at c400 [size=8]
I/O ports at c000 [size=8]
I/O ports at bc00 [size=16]
0000:00:0b.0 Multimedia video controller: Internext Compression Inc iTVC15 MPEG-2 Encoder (rev 01)
Subsystem: Avermedia Technologies Inc: Unknown device a3cf
Flags: bus master, medium devsel, latency 64, IRQ 11
Memory at c8000000 (32-bit, prefetchable) [size=64M]
Capabilities: <available only to root>
0000:00:13.0 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 50) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 64, IRQ 11
I/O ports at b400 [size=32]
Capabilities: <available only to root>
0000:00:13.1 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 50) (prog-if 00 [UHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller
Flags: bus master, medium devsel, latency 64, IRQ 11
I/O ports at b800 [size=32]
Capabilities: <available only to root>
0000:00:13.2 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 51) (prog-if 20 [EHCI])
Subsystem: VIA Technologies, Inc. (Wrong ID): Unknown device 1234
Flags: bus master, medium devsel, latency 64, IRQ 10
Memory at cfffff00 (32-bit, non-prefetchable) [size=256]
Capabilities: <available only to root>
0000:01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev b2) (prog-if 00 [VGA])
Subsystem: Micro-Star International Co., Ltd.: Unknown device 818a
Flags: bus master, 66MHz, medium devsel, latency 248, IRQ 11
Memory at ce000000 (32-bit, non-prefetchable) [size=16M]
Memory at b8000000 (32-bit, prefetchable) [size=128M]
Expansion ROM at cfef0000 [disabled] [size=64K]
Capabilities: <available only to root>
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