Comment 4 for bug 455660

I have now changed installed a four-port USB PCI card and it is working very well.

Disabled the USB controller on the motherboard - so there either is a hardware issue with the MCP78s chipset that causes USB port problems, or there is something with Linux causing the problem.

lspci:

00:00.0 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory Controller (rev a2)
00:01.0 ISA bridge: nVidia Corporation MCP78S [GeForce 8200] LPC Bridge (rev a2)
00:01.1 SMBus: nVidia Corporation MCP78S [GeForce 8200] SMBus (rev a1)
00:01.2 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory Controller (rev a1)
00:01.3 Co-processor: nVidia Corporation MCP78S [GeForce 8200] Co-Processor (rev a2)
00:01.4 RAM memory: nVidia Corporation MCP78S [GeForce 8200] Memory Controller (rev a1)
00:06.0 IDE interface: nVidia Corporation MCP78S [GeForce 8200] IDE (rev a1)
00:07.0 Audio device: nVidia Corporation MCP72XE/MCP72P/MCP78U/MCP78S High Definition Audio (rev a1)
00:08.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Bridge (rev a1)
00:09.0 SATA controller: nVidia Corporation MCP78S [GeForce 8200] AHCI Controller (rev a2)
00:0b.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Express Bridge (rev a1)
00:10.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Express Bridge (rev a1)
00:12.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Express Bridge (rev a1)
00:13.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Bridge (rev a1)
00:14.0 PCI bridge: nVidia Corporation MCP78S [GeForce 8200] PCI Bridge (rev a1)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control
01:04.0 Multimedia video controller: Internext Compression Inc iTVC16 (CX23416) MPEG-2 Encoder (rev 01)
01:05.0 Multimedia video controller: Conexant Systems, Inc. CX23418 Single-Chip MPEG-2 Encoder with Integrated Analog Video/Broadcast Audio Decoder
01:06.0 USB Controller: NEC Corporation USB (rev 43)
01:06.1 USB Controller: NEC Corporation USB (rev 43)
01:06.2 USB Controller: NEC Corporation USB 2.0 (rev 04)
02:00.0 VGA compatible controller: nVidia Corporation C77 [GeForce 8200] (rev a2)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 02

cat /proc/interrupts

           CPU0 CPU1 CPU2 CPU3
  0: 23 0 0 3 IO-APIC-edge timer
  1: 0 0 0 1033 IO-APIC-edge i8042
  7: 1 0 0 0 IO-APIC-edge
  8: 0 0 0 1 IO-APIC-edge rtc0
  9: 0 0 0 0 IO-APIC-fasteoi acpi
 12: 0 0 5 10935 IO-APIC-edge i8042
 14: 0 0 3 4919 IO-APIC-edge pata_amd
 15: 0 0 0 0 IO-APIC-edge pata_amd
 16: 0 0 0 358 IO-APIC-fasteoi cx18-0
 17: 0 0 5 1903 IO-APIC-fasteoi ohci_hcd:usb3
 18: 0 0 0 0 IO-APIC-fasteoi ohci_hcd:usb2
 19: 0 0 0 162 IO-APIC-fasteoi ehci_hcd:usb1, ivtv0
 21: 0 0 0 2237 IO-APIC-fasteoi HDA Intel
 22: 0 0 1 385 IO-APIC-fasteoi nvidia
 28: 0 0 10 18133 PCI-MSI-edge ahci
 29: 0 0 4 8067 PCI-MSI-edge eth0
NMI: 0 0 0 0 Non-maskable interrupts
LOC: 26153 26642 21696 32013 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
CNT: 0 0 0 0 Performance counter interrupts
PND: 0 0 0 0 Performance pending work
RES: 36407 23527 29418 23916 Rescheduling interrupts
CAL: 8089 8069 7243 6268 Function call interrupts
TLB: 709 670 499 455 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 2 2 2 2 Machine check polls
ERR: 1
MIS: 0

nvidia is no longer sharing an IRQ with the USB controller and instead, ivtv0 is sharing it. the PVR-150 (which is the ivtv0 device) is working well without any problems while continuing to use the Bluetooth-attached device to the USB along with the USB printer attached.