v3.8-rc1-raring/22-Dec-2012 02:58- v3.8-rc2-raring/
http://kernel.ubuntu.com/~kernel-ppa/mainline/ 
which one ? 

Master CATZ

> Date: Thu, 3 Jan 2013 16:45:31 +0000
> From: [email protected]
> To: [email protected]
> Subject: [Bug 1073384] Re: AMD-Vi: Completion-Wait loop timed out
> 
> Would it be possible for you to test the latest upstream kernel?  Refer
> to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
> v3.8 kernel[0] (Not a kernel in the daily directory) and install both
> the linux-image and linux-image-extra .deb packages.
> 
> If this bug is fixed in the mainline kernel, please add the following
> tag 'kernel-fixed-upstream'.
> 
> If the mainline kernel does not fix this bug, please add the tag:
> 'kernel-bug-exists-upstream'.
> 
> If you are unable to test the mainline kernel, for example it will not boot, 
> please add the tag: 'kernel-unable-to-test-upstream'.  
> Once testing of the upstream kernel is complete, please mark this bug as 
> "Confirmed".
> 
> 
> Thanks in advance.
> 
> [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.8-rc1-raring/
> 
> 
> ** Changed in: linux (Ubuntu)
>    Importance: Undecided => Medium
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1073384
> 
> Title:
>   AMD-Vi: Completion-Wait loop timed out
> 
> Status in “linux” package in Ubuntu:
>   Incomplete
> 
> Bug description:
>   AMD-Vi: Completion-Wait loop timed out
> 
>   
>   I have an F2A85X-UP4 with 32 Gig Ram and amd-a10-5800k
> 
>   I have disabled turbo and any thing that might change in cpu freq 
>   I also disabled cpu virtualization
> 
>   
>   I have a feeling this might be related to using ZFS as when ever I do 
> something that requires  a lot of data from my ZFS pool of 16x HDD's this 
> seems to happen 
> 
>   ppa:zfs-native/daily
> 
>   how ever I am sure it has happened before with out the pool imported
> 
>   and happened more often with c6 state enabled
> 
>   
>   any idea's where to start looking 
> 
>   this happened with both 12.04 LTS and Ubuntu 12.10
> 
>   how ever sticking with  Ubuntu 12.10 as its video drivers seem to be
>   better and I can get a days use out of it with out this issue rearing
>   its head
> 
>   with 12.04 LTS it did not take long for mouse to become unresponsive
> 
>   
>   # uname -a
>   Linux aio 3.5.0-18-generic #29-Ubuntu SMP Fri Oct 19 10:26:51 UTC 2012 
> x86_64 x86_64 x86_64 GNU/Linux
> 
>   
>   sorry using my windows box to post this as Ubuntu is doing that thing atm 
> and I am waiting for it to finish something before doing another reboot
>   --- 
>   ApportVersion: 2.6.1-0ubuntu9
>   Architecture: amd64
>   DistroRelease: Ubuntu 12.10
>   MarkForUpload: True
>   NonfreeKernelModules: zfs zcommon znvpair zavl zunicode
>   Package: linux (not installed)
>   ProcEnviron:
>    LANGUAGE=en_AU:en
>    TERM=xterm
>    PATH=(custom, no user)
>    LANG=en_AU.UTF-8
>    SHELL=/bin/bash
>   Tags:  quantal
>   Uname: Linux 3.6.8-030608-generic x86_64
>   UnreportableReason: The running kernel is not an Ubuntu kernel
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   UserGroups:
> 
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1073384/+subscriptions

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https://bugs.launchpad.net/bugs/1073384

Title:
  AMD-Vi: Completion-Wait loop timed out

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