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[tomzalt <tlazaro18@xxxxxxxxx>]

Same problem here on Lenovo W540. I basically can't install Ubuntu or
Kubuntu on my laptop. I can't have Linux. This is horrible. Are you
telling me I have to live with a laptop with Windows 8? What kind of
sick person would that to another human being?

Please help. Let me know if there is any way I can help debug or test
this. 14.04, 14.10 and 15.04 Ubuntu and Kubuntu all fail.

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https://bugs.launchpad.net/bugs/1437386

Title:
  Unable to boot LenovoThinkpad W541

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I tried to boot my Lenovo Thinkpad W541 using a bootable USB(having
  Ubuntu 14.04 image).

  I could see the welcome screen where I can choose to try or install
  Ubuntu. Choosing either one causes a freeze.

  Initial boot screen shows the following error (which maybe the
  reason?):

  "mmc0 unknown controller version(3), You may experience problems"

  I cannot run "apport-collect" since this problem stops me from booting.
  --- 
  ApportVersion: 2.12.5-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  ubuntu     2803 F.... pulseaudio
   /dev/snd/controlC0:  ubuntu     2803 F.... pulseaudio
  CasperVersion: 1.336ubuntu1
  DistroRelease: Ubuntu 13.10
  LiveMediaBuild: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 20EGS01600
  MarkForUpload: True
  Package: linux (not installed)
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: file=/cdrom/preseed/username.seed boot=casper initrd=/casper/initrd.lz quiet splash -- maybe-ubiquity
  ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
  RelatedPackageVersions:
   linux-restricted-modules-3.11.0-12-generic N/A
   linux-backports-modules-3.11.0-12-generic  N/A
   linux-firmware                             1.116
  Tags:  saucy
  Uname: Linux 3.11.0-12-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 02/26/2015
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GNET72WW (2.20 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20EGS01600
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGNET72WW(2.20):bd02/26/2015:svnLENOVO:pn20EGS01600:pvrThinkPadW541:rvnLENOVO:rn20EGS01600:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20EGS01600
  dmi.product.version: ThinkPad W541
  dmi.sys.vendor: LENOVO

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