Memory issue in kernel 2.6.18
Hello,
I have a system based on an AMD Athlon(tm) 64 X2 Dual Core Processor 3600+, Gigabyte GA-M61PM-S2 (mother-board) with 8Gb of physical memory. Linux (Debian Etch, kernel 2.6.18 amd64) recognizes only 6.5 Gb. Does anybody have an idea on how to get 8 Gb memory working in this system? Thanks. |
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uname -a Linux tomjobim 2.6.18-4-amd64 #1 SMP Mon Mar 26 11:36:53 CEST 2007 x86_64 GNU/Linux ------------------------------- cat /proc/meminfo MemTotal: 7020332 kB MemFree: 3103104 kB Buffers: 125560 kB Cached: 208132 kB SwapCached: 0 kB Active: 3521348 kB Inactive: 171556 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 7020332 kB LowFree: 3103104 kB SwapTotal: 9767512 kB SwapFree: 9767512 kB Dirty: 56 kB Writeback: 0 kB AnonPages: 3359344 kB Mapped: 52328 kB Slab: 188580 kB PageTables: 13416 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 13277676 kB Committed_AS: 3563520 kB VmallocTotal: 34359738367 kB VmallocUsed: 267528 kB VmallocChunk: 34359470823 kB ------------------------------- cat /proc/meminfo MemTotal: 7020332 kB MemFree: 3103104 kB Buffers: 125560 kB Cached: 208132 kB SwapCached: 0 kB Active: 3521348 kB Inactive: 171556 kB HighTotal: 0 kB HighFree: 0 kB LowTotal: 7020332 kB LowFree: 3103104 kB SwapTotal: 9767512 kB SwapFree: 9767512 kB Dirty: 56 kB Writeback: 0 kB AnonPages: 3359344 kB Mapped: 52328 kB Slab: 188580 kB PageTables: 13416 kB NFS_Unstable: 0 kB Bounce: 0 kB CommitLimit: 13277676 kB Committed_AS: 3563520 kB VmallocTotal: 34359738367 kB VmallocUsed: 267528 kB VmallocChunk: 34359470823 kB ------------------------------- cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 75 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ stepping : 2 cpu MHz : 2009.171 cache size : 256 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy bogomips : 4023.15 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 75 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ stepping : 2 cpu MHz : 2009.171 cache size : 256 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy bogomips : 4018.50 TLB size : 1024 4K pages clflush size : 64 cache_alignment : 64 address sizes : 40 bits physical, 48 bits virtual power management: ts fid vid ttp tm stc ------------------------------- lshw tomjobim description: Desktop Computer width: 32 bits capabilities: smbios-2.3 dmi-2.3 configuration: boot=normal chassis=desktop *-core description: Motherboard product: M61PM-S2 vendor: Gigabyte Technology Co., Ltd. physical id: 0 *-firmware description: BIOS vendor: Award Software International, Inc. physical id: 0 version: F3 (09/18/2006) size: 128KB capacity: 448KB capabilities: pci pnp apm upgrade shadowing cdboot bootselect socketedrom edd int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int9keyboard int14serial int17printer int10video acpi usb ls120boot zipboot biosbootspecification *-cpu:0 description: CPU product: AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ vendor: Advanced Micro Devices [AMD] physical id: 3 bus info: cpu@0 version: AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ slot: Socket M2 size: 2GHz capacity: 3200MHz width: 64 bits clock: 200MHz capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp x86-64 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm cr8_legacy *-cache:0 description: L1 cache physical id: b slot: Internal Cache size: 128KB capacity: 128KB capabilities: synchronous internal write-back *-cache:1 description: L2 cache physical id: d slot: External Cache size: 256KB capacity: 256KB capabilities: synchronous internal write-back *-cpu:1 description: CPU product: Athlon ( ) vendor: AMD physical id: 4 bus info: cpu@1 version: AMD Athlon(tm) 64 X2 Dual Core Processor 3600+ slot: Socket M2 size: 2GHz capacity: 3200MHz clock: 200MHz *-cache:0 description: L1 cache physical id: c slot: Internal Cache size: 128KB capacity: 128KB capabilities: synchronous internal write-back *-cache:1 DISABLED description: L2 cache physical id: e slot: External Cache capacity: 1MB capabilities: synchronous internal write-through *-memory:0 description: System Memory physical id: 1b slot: System board or motherboard size: 8GB *-bank:0 description: DIMM 400 MHz (2.5 ns) physical id: 0 slot: A0 size: 2GB width: 64 bits clock: 400MHz (2.5ns) *-bank:1 description: DIMM 400 MHz (2.5 ns) physical id: 1 slot: A1 size: 2GB width: 64 bits clock: 400MHz (2.5ns) *-bank:2 description: DIMM 400 MHz (2.5 ns) physical id: 2 slot: A2 size: 2GB width: 64 bits clock: 400MHz (2.5ns) *-bank:3 description: DIMM 400 MHz (2.5 ns) physical id: 3 slot: A3 size: 2GB width: 64 bits clock: 400MHz (2.5ns) *-memory:1 UNCLAIMED description: RAM memory product: MCP61 Memory Controller vendor: nVidia Corporation physical id: 5 bus info: pci@00:00.0 version: a1 width: 32 bits clock: 66MHz (15.2ns) capabilities: bus_master cap_list configuration: latency=0 ... |
That says it is running a 64bit kernel so it must be BIOS related somehow I see that your board has a version F7 whereas you have F3 installed you might want to consider upgrading if checking around in there does not yield an option to set it for 64bit mode because what you are seeing here looks like it is using 32bit addressing reserving space for the devices. On my board with 4gb using 64bit I get it all if I boot with 32bit OS then ~3.5gb is available which if you would double it comes to what you are seeing. Another thing the Gigabyte website has a support option where you can submit them a question I have used it a couple of times and they usually only take a couple of days at most to get back to you.
http://www.giga-byte.com.tw/Support/ServiceCenter.aspx |
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Yes, I updated the BIOS to F7 and it worked! Thanks for you help! |
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