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[aljosa <aljosa@xxxxxxxxxxxxxxxxxxxxxxxx>]

I've updated my BIOS to the latest version: CDCN35WW
I have now a fresh and totally clean installation of Ubuntu 16.04.

Here's an excerpt from my DMESG which you can find attached to this
post:

[ 0.000035] ACPI: Core revision 20150930
[ 0.025040] ACPI Error: [\_SB_.PCI0.XHC_.RHUB.HS11] Namespace lookup failure, AE_NOT_FOUND (20150930/dswload-210)
[ 0.025045] ACPI Exception: AE_NOT_FOUND, During name lookup/catalog (20150930/psobject-227)
[ 0.025084] ACPI Exception: AE_NOT_FOUND, (SSDT:CB-01 ) while loading table (20150930/tbxfload-193)
[ 0.030567] ACPI Error: 1 table load failures, 7 successful (20150930/tbxfload-214)

[ 0.355622] pci 0000:01:00.0: can't claim BAR 6 [mem 0xfff80000-0xffffffff pref]: no compatible bridge window
[ 0.355647] pci 0000:01:00.0: BAR 6: no space for [mem size 0x00080000 pref]
[ 0.355648] pci 0000:01:00.0: BAR 6: failed to assign [mem size 0x00080000 pref]

[ 1.014162] mmc0: Unknown controller version (3). You may experience
problems.

[ 1.943569] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-8000C-19.ucode failed with error -2
[ 1.943596] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-8000C-18.ucode failed with error -2
[ 1.943603] iwlwifi 0000:08:00.0: Direct firmware load for iwlwifi-8000C-17.ucode failed with error -2
[ 1.947507] iwlwifi 0000:08:00.0: Unsupported splx structure

[ 2.752029] Bluetooth: hci0: Failed to send firmware data (-38)

[ 4.755825] Bluetooth: hci0 command 0xfc05 tx timeout
[ 9.634400] usb 1-11: USB disconnect, device number 5
[ 9.634710] Bluetooth: hci0: Reading Intel version information failed (-19)

[ 11.436894] Bluetooth: hci0: Setting Intel event mask failed (-16)

[ 0.858435] [Firmware Bug]: No valid trip found
[ 0.861605] [Firmware Bug]: No valid trip found

This one is the most annoying error, it appears on screen during booting:
failure writing sector 0x21c8800 to 'hd0'
press any key to continue...

** Attachment added: "dmesg_lenovo_Y700-17ISK_bios_CDCN35WW.txt"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1553688/+attachment/4658993/+files/dmesg_lenovo_Y700-17ISK_bios_CDCN35WW.txt

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https://bugs.launchpad.net/bugs/1553688

Title:
  Lenovo Y700-17ISK: mmc0: Unknown controller version (3)

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  After installing and updating Xenial, dmesg notes:
  [    1.001432] mmc0: Unknown controller version (3). You may experience problems.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-10-generic 4.4.0-10.25
  ProcVersionSignature: Ubuntu 4.4.0-10.25-generic 4.4.3
  Uname: Linux 4.4.0-10-generic x86_64
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  aljosa     1776 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Sun Mar  6 11:18:43 2016
  HibernationDevice: RESUME=UUID=ac022671-63df-40ae-bffe-66fff3b35125
  InstallationDate: Installed on 2016-03-05 (0 days ago)
  InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160304)
  MachineType: LENOVO 80Q0
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-10-generic.efi.signed root=UUID=aa4325c4-4b4c-4372-b8ca-a66c3e5b2aa6 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-10-generic N/A
   linux-backports-modules-4.4.0-10-generic  N/A
   linux-firmware                            1.156
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/31/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: CDCN30WW
  dmi.board.asset.tag: NO Asset Tag
  dmi.board.name: Allsparks 7A
  dmi.board.vendor: LENOVO
  dmi.board.version: NO DPK
  dmi.chassis.asset.tag: NO Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo ideapad Y700-17ISK
  dmi.modalias: dmi:bvnLENOVO:bvrCDCN30WW:bd01/31/2016:svnLENOVO:pn80Q0:pvrLenovoideapadY700-17ISK:rvnLENOVO:rnAllsparks7A:rvrNODPK:cvnLENOVO:ct10:cvrLenovoideapadY700-17ISK:
  dmi.product.name: 80Q0
  dmi.product.version: Lenovo ideapad Y700-17ISK
  dmi.sys.vendor: LENOVO

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