Public bug reported:
i386 Ubuntu Desktop -generic kernel (updated as of 2008-04-14) sees only
3GB RAM in my 64-bit 8GB computer.
Booting using an i386 Hardy Beta LiveCD finds all 8GB - also a Gutsy
64-bit LiveCD finds all 8GB.
I've booted using mem=8192M and this does not help.
I've tried both 2.6.24-16-generic and 2.6.24-12-generic and they both
only see 3GB.
[EMAIL PROTECTED]:~$ uname -a
Linux ws1-249 2.6.24-16-generic #1 SNMP Thu Apr 10 13:23:42 UTC 2008 i686
GNU/Linux
[EMAIL PROTECTED]:~$ cat /proc/mtrr
reg00: base=0x00000000 ( 0MB), size=2048MB: write-back, count=1
reg01: base=0x80000000 (2048MB), size=1024MB: write-back, count=1
reg02: base=0xc0000000 (3072MB), size= 256MB: write-back, count=1
reg03: base=0x100000000 (4096MB), size=4096MB: write-back, count=1
reg04: base=0x200000000 (8192MB), size=1024MB: write-back, count=1
reg05: base=0xcfc00000 (3324MB), size= 4MB: uncachable, count=1
reg06: base=0xd8000000 (3456MB), size= 16MB: write-combining, count=1
[EMAIL PROTECTED]:~$ cat /proc/meminfo
MemTotal: 3365072 kB
MemFree: 2558552 kB
Buffers: 13800 kB
Cached: 306848 kB
SwapCached: 0 kB
Active: 529352 kB
Inactive: 230964 kB
HighTotal: 2485568 kB
HighFree: 1728764 kB
LowTotal: 879504 kB
LowFree: 829788 kB
SwapTotal: 6008300 kB
SwapFree: 6008300 kB
Dirty: 88 kB
Writeback: 0 kB
AnonPages: 439856 kB
Mapped: 36212 kB
Slab: 22324 kB
SReclaimable: 12744 kB
SUnreclaim: 9580 kB
PageTables: 1824 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
CommitLimit: 7690836 kB
Committed_AS: 1081764 kB
VmallocTotal: 114680 kB
VmallocUsed: 6284 kB
VmallocChunk: 108156 kB
** Affects: ubuntu
Importance: Undecided
Status: New
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8.04 i386 -generic kernel seeing 3GB RAM on 64-bit 8GB RAM system
https://bugs.launchpad.net/bugs/217309
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