Comment 17 for bug 116752

I also have a T60 running 24h/7d. From my experience, there seems to be problems with various kernels at least up to 2.6.26 and Thinkpads and the problems are not specific to Ubuntu. I do use fglrx (no beryl) and crashes appear with a quiet blank screen. I nearly always get the NMI crash after some hours backing up large amounts of data to an external USB drive. There are also various IRQ problems with eSata and modem PCI Express/PCMCIA cards. I am currently testing various boot options ( pci=assign-busses seems to be help at least with the cards but not the NMI crash, I am currently testing noirq and noapic as option).

When using cd /proc/interrupts I do see that one USB and fglrx use the same interupt and maybe that is a problem for one of the drivers (either USB or fglrx):

cat interrupts
           CPU0 CPU1
  0: 48252 1 IO-APIC-edge timer
  1: 174 0 IO-APIC-edge i8042
  3: 100 0 IO-APIC-edge serial
  4: 165 0 IO-APIC-edge serial
  7: 0 0 IO-APIC-edge parport0
  8: 10 0 IO-APIC-edge rtc
  9: 313 210584 IO-APIC-fasteoi acpi
 12: 13210 0 IO-APIC-edge i8042
 14: 20878 0 IO-APIC-edge libata
 15: 0 0 IO-APIC-edge libata
 16: 2 0 IO-APIC-fasteoi uhci_hcd:usb1, yenta, fglrx[0]@PCI:1:0:0
 20: 756632 0 IO-APIC-fasteoi ehci_hcd:usb2, uhci_hcd:usb5
 21: 115 454 IO-APIC-fasteoi uhci_hcd:usb3, HDA Intel
 22: 43 248232 IO-APIC-fasteoi uhci_hcd:usb4, sata_sil24
218: 684 17101 PCI-MSI-edge eth0
219: 19292 57607 PCI-MSI-edge ahci
NMI: 0 0
LOC: 451630 474874
ERR: 0
MIS: 0

Maybe someone else has similar experience here?