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[Shih-Yuan Lee <1559870@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

I used "Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)" from http://cdimage.ubuntu.com/daily-live/current/.
But it can not find the built-in eMMC storage and it shows the following messages.

[   12.355182] sdhci-pci 0000:00:1e.4: No vmmc regulator found
[   12.355185] sdhci-pci 0000:00:1e.4: No vqmmc regulator found
[   12.358331] mmc0: SDHCI controller on PCI [0000:00:1e.4] using ADMA 64-bit
[   12.359549] sdhci-pci 0000:00:1e.6: No vmmc regulator found
[   12.359552] sdhci-pci 0000:00:1e.6: No vqmmc regulator found
[   12.362713] mmc1: SDHCI controller on PCI [0000:00:1e.6] using ADMA 64-bit
[   12.472768] mmc0: MAN_BKOPS_EN bit is not set
[   12.489132] mmc0: mmc_select_hs400 failed, error -74
[   12.489134] mmc0: error -74 whilst initialising MMC card
[   12.601333] mmc0: MAN_BKOPS_EN bit is not set
[   12.617263] mmc0: mmc_select_hs400 failed, error -74
[   12.617280] mmc0: error -74 whilst initialising MMC card
[   12.745957] mmc0: MAN_BKOPS_EN bit is not set
[   12.764502] mmc0: mmc_select_hs400 failed, error -74
[   12.764519] mmc0: error -74 whilst initialising MMC card
[   12.923969] mmc0: MAN_BKOPS_EN bit is not set
[   12.948561] mmc0: mmc_select_hs400 failed, error -74
[   12.948580] mmc0: error -74 whilst initialising MMC card

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
CasperVersion: 1.367
CurrentDesktop: Unity
Date: Mon Mar 21 06:20:39 2016
LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash ---
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.board.name: STCK2MV64CC
dmi.product.name: STCK2MV64CC

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Confirmed


** Tags: amd64 apport-bug xenial

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https://bugs.launchpad.net/bugs/1559870

Title:
  mmc_select_hs400 failed, error -74

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I used "Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)" from http://cdimage.ubuntu.com/daily-live/current/.
  But it can not find the built-in eMMC storage and it shows the following messages.

  [   12.355182] sdhci-pci 0000:00:1e.4: No vmmc regulator found
  [   12.355185] sdhci-pci 0000:00:1e.4: No vqmmc regulator found
  [   12.358331] mmc0: SDHCI controller on PCI [0000:00:1e.4] using ADMA 64-bit
  [   12.359549] sdhci-pci 0000:00:1e.6: No vmmc regulator found
  [   12.359552] sdhci-pci 0000:00:1e.6: No vqmmc regulator found
  [   12.362713] mmc1: SDHCI controller on PCI [0000:00:1e.6] using ADMA 64-bit
  [   12.472768] mmc0: MAN_BKOPS_EN bit is not set
  [   12.489132] mmc0: mmc_select_hs400 failed, error -74
  [   12.489134] mmc0: error -74 whilst initialising MMC card
  [   12.601333] mmc0: MAN_BKOPS_EN bit is not set
  [   12.617263] mmc0: mmc_select_hs400 failed, error -74
  [   12.617280] mmc0: error -74 whilst initialising MMC card
  [   12.745957] mmc0: MAN_BKOPS_EN bit is not set
  [   12.764502] mmc0: mmc_select_hs400 failed, error -74
  [   12.764519] mmc0: error -74 whilst initialising MMC card
  [   12.923969] mmc0: MAN_BKOPS_EN bit is not set
  [   12.948561] mmc0: mmc_select_hs400 failed, error -74
  [   12.948580] mmc0: error -74 whilst initialising MMC card

  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
  CasperVersion: 1.367
  CurrentDesktop: Unity
  Date: Mon Mar 21 06:20:39 2016
  LiveMediaBuild: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160307)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/username.seed boot=casper quiet splash ---
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.board.name: STCK2MV64CC
  dmi.product.name: STCK2MV64CC

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