This is the kind of message I had 2 years ago with a nvidia Graphic card, on a motherboard AsRock (the behavior of the same Graphic card, a nvidia 8400gs, on another machine, a Dell computer desktop, is completly different, no freeze as long as I use nv or the proprietary driver provided by the repositories):
With this command as root, launched just after a reboot following immediatly a freeze:
tail -n 800 /var/log/messages.log
I was getting this types of "irq mess"
Apr 14 18:28:55 squirrel Pid: 5118, comm: xmms Tainted: P 2.6.24-ARCH #1
Apr 14 18:28:55 squirrel [<c015c244>] __report_bad_irq+0x24/0x80
Apr 14 18:28:55 squirrel [<f988fe1c>] nv_kern_isr+0x6c/0xd0 [nvidia]
Apr 14 18:28:55 squirrel [<c015c52b>] note_interrupt+0x28b/0x2d0
Apr 14 18:28:55 squirrel [<c015b740>] handle_IRQ_event+0x30/0x60
Apr 14 18:28:55 squirrel [<c015d102>] handle_level_irq+0x92/0xf0
Apr 14 18:28:55 squirrel [<c01083bb>] do_IRQ+0x3b/0x70
Apr 14 18:28:55 squirrel [<c01334eb>] irq_exit+0x5b/0x90
Apr 14 18:28:55 squirrel [<c011cfe5>] smp_apic_timer_interrupt+0x55/0x80
Apr 14 18:28:55 squirrel [<c0105f47>] common_interrupt+0x23/0x28
Apr 14 18:28:55 squirrel =======================
Apr 14 18:29:28 squirrel SysRq : Keyboard mode set to system default
Apr 14 18:30:47 squirrel SysRq : Terminate All Tasks
Apr 14 19:07:27 squirrel BIOS-e820: 000000000009fc00 - 00000000000a0000 (reserved)
Apr 14 19:07:27 squirrel BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved)
Then I had tried the following advice : at the end of the kernel boot line, in the file /boot/grub/menu.lst, I added noapic
, or even noapic nolapic
You can look at the definition of these options in pages such as this one : http://www.mjmwired.net/kernel/Documentation/kernel-parameters.txt
and probably more detailed explanations in wikipedia.
The freezes had not totally stopped, but happened only once a while, after a few months or so, once I had configured the boot with "noapic".
But I really got rid of it when I removed the Graphic Card from this machine and sold the machine to someone who needed a computer only for office tasks !
While I say that, with your specs we might examine what driver your card uses exacly. Can you look into the /etc/X11/xorg.conf file, or in the PCC, hardware section to look at the driver which version is in use ?