[Nouveau] [Bug 69928] [NVAA] Boot of linux kernel 3.12-rc2 hangs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69928

--- Comment #13 from dirkneukirchen at web.de ---
(In reply to comment #12)
> The request to see /proc/interrupts was just to see if it was using MSI or
> not, not for the actual interrupt counts.
> 
>  20:       5187   IO-APIC-fasteoi   ehci_hcd:usb2, nvidia
> 
> Sadly it's not using MSI. (If it were, it'd say PCI-MSI-edge or something
> like that.) Would it be possible for you to get a version that enables MSI?
> I believe 325 and newer do this. If it does enable MSI, Ben could use a
> trace.

MSI is indeed enabled in 325.15

Creating a test system (ubuntu 13.10) took a while my setup is:
- apply a patch to NVIDIA drivers because Kernel 3.11 is used (via google)
- disable modeset (kernel cmdline: nomodeset )
- blacklist vesafb, nouveau (modprobe.d entries and cmdline:
rdblacklist=nouveau  nouveau.blacklist=1  nouveau.modeset=0)
- enable vga console (cmdline: video=vesa:off vga=normal )
- install nvidia custom driver (created by --apply-patch patch311.patch)
- reboot

two mmiotraces are attached

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