dmesg output (partial)
-----------------------------------------
Linux version 2.6.23-gentoo-r3 (root@Galois) (gcc version 4.1.1 (Gentoo 4.1.1-r3)) #1 SMP Wed Dec 12 12:10:02 EST 2007
Command line: root=/dev/sda3 apic apci=noirq mem=5g
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009b400 (usable)
BIOS-e820: 000000000009b400 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000d0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 000000007ff90000 (usable)
BIOS-e820: 000000007ff90000 - 000000007ff99000 (ACPI data)
BIOS-e820: 000000007ff99000 - 0000000080000000 (ACPI NVS)
BIOS-e820: 0000000080000000 - 00000000cff80000 (usable)
BIOS-e820: 00000000cff80000 - 00000000d0000000 (reserved)
BIOS-e820: 00000000e0000000 - 00000000e8000000 (reserved)
BIOS-e820: 00000000fec00000 - 00000000fec00400 (reserved)
BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved)
BIOS-e820: 00000000fff80000 - 0000000100000000 (reserved)
Entering add_active_range(0, 0, 155) 0 entries of 256 used
Entering add_active_range(0, 256, 524176) 1 entries of 256 used
Entering add_active_range(0, 524288, 851840) 2 entries of 256 used
end_pfn_map = 1048576
DMI present.
ACPI: RSDP 000F6C90, 0014 (r0 PTLTD )
ACPI: RSDT 7FF9542F, 0038 (r1 PTLTD RSDT 6040000 LTP 0)
ACPI: FACP 7FF98D9A, 0074 (r1 NVIDIA CK8S 6040000 PTL_ F4240)
ACPI: DSDT 7FF95467, 3933 (r1 NVIDIA CK8 6040000 MSFT 100000E)
ACPI: FACS 7FF99FC0, 0040
ACPI: SRAT 7FF98E0E, 00E8 (r1 AMD HAMMER 6040000 AMD 1)
ACPI: SPCR 7FF98EF6, 0050 (r1 PTLTD $UCRTBL$ 6040000 PTL 1)
ACPI: APIC 7FF98F46, 0092 (r1 PTLTD APIC 6040000 LTP 0)
ACPI: BOOT 7FF98FD8, 0028 (r1 PTLTD $SBFTBL$ 6040000 LTP 1)
Entering add_active_range(0, 0, 155) 0 entries of 256 used
Entering add_active_range(0, 256, 524176) 1 entries of 256 used
Entering add_active_range(0, 524288, 851840) 2 entries of 256 used
Zone PFN ranges:
DMA 0 -> 4096
DMA32 4096 -> 1048576
Normal 1048576 -> 1048576
Movable zone start PFN for each node
early_node_map[3] active PFN ranges
0: 0 -> 155
0: 256 -> 524176
0: 524288 -> 851840
On node 0 totalpages: 851627
DMA zone: 56 pages used for memmap
DMA zone: 1895 pages reserved
DMA zone: 2044 pages, LIFO batch:0
DMA32 zone: 11590 pages used for memmap
DMA32 zone: 836042 pages, LIFO batch:31
Normal zone: 0 pages used for memmap
Movable zone: 0 pages used for memmap
Nvidia board detected. Ignoring ACPI timer override.
If you got timer trouble try acpi_use_timer_override
ACPI: PM-Timer IO Port: 0x8008
ACPI: Local APIC address 0xfee00000
ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
Processor #0 (Bootup-CPU)
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
Processor #1
ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
Processor #2
ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] enabled)
Processor #3
ACPI: LAPIC_NMI (acpi_id[0x00] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x01] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x02] high edge lint[0x1])
ACPI: LAPIC_NMI (acpi_id[0x03] high edge lint[0x1])
ACPI: IOAPIC (id[0x04] address[0xfec00000] gsi_base[0])
IOAPIC[0]: apic_id 4, address 0xfec00000, GSI 0-23
ACPI: IOAPIC (id[0x05] address[0xdf200000] gsi_base[24])
IOAPIC[1]: apic_id 5, address 0xdf200000, GSI 24-27
ACPI: IOAPIC (id[0x06] address[0xdf201000] gsi_base[28])
IOAPIC[2]: apic_id 6, address 0xdf201000, GSI 28-31
ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 low level)
ACPI: IRQ9 used by override.
Setting APIC routing to flat
Using ACPI (MADT) for SMP configuration information
Allocating PCI resources starting at ea000000 (gap: e8000000:16c00000)
SMP: Allowing 4 CPUs, 0 hotplug CPUs
PERCPU: Allocating 38888 bytes of per cpu data
Built 1 zonelists in Zone order. Total pages: 838086
Kernel command line: root=/dev/sda3 apic apci=noirq mem=5g

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Im experiencing kernel panic when there is intensive memory use. (compiling, transfering large file and memtester hangs the computer instantly.)


I would like to know what are the best BIOS settings. Ive tried a lot of different settings without results. Now, due the Memory hole disabled setting, I only can see 3G of RAM.

Last settings (suggested from another user):
OS Linux
Node Interleave: Disabled
DRAM Bank Interleave: Disabled
MTTR Mapping: Discrete
Memory hole: Disable
Memory clock = DDR333
Swizzle memory banks= disable


Thank you!!