[Bug 20432] NVIDIA GPU doesn't work if loaded at last after all other device drivers have already been loaded

[<bug...@bu...>]

https://bugzilla.kernel.org/show_bug.cgi?id=20432





--- Comment #5 from Artem S. Tashkinov <t....@ma...>  2010-10-19 07:58:21 ---
(In reply to comment #3)
> This issue is better reported to NVIDIA developers.

I'm not sure they will respond (positively):

Here's what their documentation says on this matter:
___________
 My X server fails to start, and my X log file contains the error:

 (EE) NVIDIA(0): The NVIDIA kernel module does not appear to
 (EE) NVIDIA(0):      be receiving interrupts generated by the NVIDIA graphics
 (EE) NVIDIA(0):      device PCI:x:x:x. Please see the COMMON PROBLEMS
 (EE) NVIDIA(0):      section in the README for additional information.
 This can be caused by a variety of problems, such as PCI IRQ routing errors,
 I/O APIC problems or conflicts with other devices sharing the IRQ (or their
 drivers).

 If possible, configure your system such that your graphics card does not share
 its IRQ with other devices (try moving the graphics card to another slot if
 applicable, unload/disable the driver(s) for the device(s) sharing the card's
 IRQ, or remove/disable the device(s)).

 Depending on the nature of the problem, one of (or a combination of) these
 kernel parameters might also help:

  Parameter                        Behavior
 pci=noacpi  don't use ACPI for PCI IRQ routing
 pci=biosirq use PCI BIOS calls to retrieve the IRQ routing table
 noapic      don't use I/O APICs present in the system
 acpi=off    disable ACPI
___________
In fact options listed as possible solutions don't help.

I tend to think it's a Linux kernel problem, because when I load nvidia.ko
module it doesn't get listed in /proc/interrupts.

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