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[shawn <dasecretzofwar@xxxxxxxxx>]

I updated the bios to F7 and no change. It is also may be important to
not i was getting the same error with my hard drives as well. Switching
the AHCI mode fixed it but now for whatever reason every time i boot i
have to press S to skip mounting a drive. It didn't do this before
switching to AHCI mode and once fully booted into Ubuntu i can access
the same drive i skipped fine with no issues.

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https://bugs.launchpad.net/bugs/1414334

Title:
  DMA Errors "DMA: Out of SW-IOMMU space for 2048 bytes at device
  0000:06:00.0"

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Getting 
  Jan 24 09:21:08 tux kernel: [52976.030567] wl 0000:06:00.0: swiotlb buffer is full
  Jan 24 09:21:08 tux kernel: [52976.030569] DMA: Out of SW-IOMMU space for 2048 bytes at device 0000:06:00.0

  In my syslog which eventually ends up breaking all networking on the
  desktop. I have the parameter iommu=soft specified but still get the
  issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: linux-image-3.13.0-32-generic 3.13.0-32.57 [modified: boot/vmlinuz-3.13.0-32-generic]
  ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4
  Uname: Linux 3.13.0-32-generic x86_64
  NonfreeKernelModules: wl nvidia
  ApportVersion: 2.14.1-0ubuntu3.2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC2:  jr         2244 F.... pulseaudio
   /dev/snd/controlC1:  jr         2244 F.... pulseaudio
   /dev/snd/controlC0:  jr         2244 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sat Jan 24 13:16:27 2015
  HibernationDevice: RESUME=UUID=34841bb5-61d5-4a01-a342-24869f8869e0
  InstallationDate: Installed on 2015-01-18 (5 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  MachineType: Gigabyte Technology Co., Ltd. EP45T-UD3P
  ProcFB:
   
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-32-generic root=UUID=ac1266a9-de0d-4e1d-a617-ff6300c35fec ro quiet splash iommu=soft
  RelatedPackageVersions:
   linux-restricted-modules-3.13.0-32-generic N/A
   linux-backports-modules-3.13.0-32-generic  N/A
   linux-firmware                             1.127.5
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/13/2009
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F4
  dmi.board.name: EP45T-UD3P
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd01/13/2009:svnGigabyteTechnologyCo.,Ltd.:pnEP45T-UD3P:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEP45T-UD3P:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: EP45T-UD3P
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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