I have an Compaq Presario V6107AU, with an nvidia MCP51 chipset, as shown by the lspci output below: # /sbin/lspci 00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2) 00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2) 00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2) 00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2) 00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2) 00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2) 00:02.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:05.0 VGA compatible controller: nVidia Corporation C51 [Geforce 6150 Go] (rev a2) 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2) 00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a3) 00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a3) 00:0a.3 Co-processor: nVidia Corporation MCP51 PMU (rev a3) 00:0b.0 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0b.1 USB Controller: nVidia Corporation MCP51 USB Controller (rev a3) 00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev f1) 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev f1) 00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) 00:10.1 Audio device: nVidia Corporation MCP51 High Definition Audio (rev a2) 00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a3) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 03:00.0 Network controller: Broadcom Corporation BCM4310 UART (rev 01) 07:05.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller 07:05.1 Generic system peripheral [0805]: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 19) 07:05.2 System peripheral: Ricoh Co Ltd Unknown device 0843 (rev 01) 07:05.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 0a) 07:05.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 05) If you are experiencing lockups with F7, try adding "pci=noacpi" to the kernel boot parameter. You could also try "noapic", but with "noapic", usb 2.0 highspeed does not work ... or any usb devices connected after startup does not work at all: http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=244563 With FC6, I did not try "pci=noapic", but only tried "noapic". Now if only I could get HPET working..... John
