Originally Posted by mathog
What kind of PCI slot is it? At 9 years old it may not be a very fast. Possibly the Nvidia driver occasionally needs to move data faster than it can handle.
Is the IRQ for the graphics card shared with another device? If so perhaps you can set a jumper or move cards around to remedy that.
I believe it is a PCI-2.0 (32-bit PCI bus slot, supports 3.3V/5V PCI bus interface), where the card puportedly works in such an old PCI slot.
Reference interrupts, that is possible ... I note IRQ 16 has the graphic card:
lee@stonehenge01:~> cat /proc/interrupts
0: 125 IO-APIC-edge timer
1: 1747 IO-APIC-edge i8042
3: 2 IO-APIC-edge
4: 2 IO-APIC-edge
6: 5 IO-APIC-edge floppy
7: 0 IO-APIC-edge parport0
8: 0 IO-APIC-edge rtc0
9: 0 IO-APIC-fasteoi acpi
12: 67535 IO-APIC-edge i8042
14: 24926 IO-APIC-edge pata_via
15: 4196 IO-APIC-edge pata_via
16: 89734 IO-APIC-fasteoi ehci_hcd:usb3, nvidia
18: 4960 IO-APIC-fasteoi uhci_hcd:usb1
19: 3062 IO-APIC-fasteoi uhci_hcd:usb2, eth0
21: 0 IO-APIC-fasteoi uhci_hcd:usb4, uhci_hcd:usb5
22: 19125 IO-APIC-fasteoi VIA8233A
NMI: 0 Non-maskable interrupts
LOC: 252235 Local timer interrupts
RES: 0 Rescheduling interrupts
CAL: 0 function call interrupts
TLB: 0 TLB shootdowns
TRM: 0 Thermal event interrupts
SPU: 0 Spurious interrupts
... as noted .. hopefully sometime soon I'll find the time to test it in another slightly newer PC.