Turion64x2 dmesg shows SMP is disabled in Ubuntu 9.10 x86_64
Here is my tale of woe.
I've been working to put back together a broken HP dv2000z Pavilion Laptop. Suffice it to say it has had more than its fair share of issues--I'll spare you the details.
The latest problem was a bad motherboard. The machine is out of warranty, so I opted to shop for a motherboard at eBay, found one, bought, installed.
All well and good. When I put together the machine and did an install of Ubuntu 9.10 from LiveCD, I noticed I could not get the machine to boot unless I specified a kernel boot option of 'nolapic'.
So, I thought, I'll add that to /etc/default/grub--did that and the machine boots up fine.
P.S., I went into the BIOS to check the firmware version--it turns out this motherboard part# is shared by the HP-Compaq Presario V3000 because that is what the Phoenix bios shows.
OK, so I have a newer bios that thinks its a Compaq Presario V3000. Great :P
Then, I decide to pull a terminal session and run htop and noticed it was only showing one core processor.
I went further and checked dmesg which confirmed that SMP is disabled.
cat /proc/cpuinfo also confirms one core present.
uname -a shows:
2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:05:01 UTC 2009 x86_64 GNU/Linux
So, although my machine is back up, SMP is disabled and I can't boot the HDD without nolapic.
Any thoughts on what to do?