** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux (Ubuntu Bionic)
   Importance: High
       Status: Confirmed

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https://bugs.launchpad.net/bugs/1762672

Title:
  TPM on Dell XPS 13 stopped working after upgrade to 18.04

Status in linux package in Ubuntu:
  Confirmed
Status in linux source package in Bionic:
  Confirmed

Bug description:
   [    0.801334] tpm_tis MSFT0101:00: 2.0 TPM (device-id 0xFE, rev-id 4)
   [    0.812132] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    0.843629] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    0.895424] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    0.987230] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    1.159026] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    1.490819] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    2.142530] tpm tpm0: A TPM error (2314) occurred continue selftest
   [    3.423100] tpm tpm0: TPM self test failed
   [    3.456304] ima: No TPM chip found, activating TPM-bypass! (rc=-19)

  Discussion https://lkml.org/lkml/2017/12/6/284

  Fix
  
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/char/tpm/tpm2-cmd.c?id=2be8ffed093b91536d52b5cd2c99b52f605c9ba6

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-generic 4.15.0.13.14
  ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10
  Uname: Linux 4.15.0-13-generic x86_64
  ApportVersion: 2.20.9-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  baz        2268 F.... pulseaudio
  CurrentDesktop: XFCE
  Date: Tue Apr 10 11:41:57 2018
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=/dev/mapper/cryptswap1
  InstallationDate: Installed on 2018-03-01 (39 days ago)
  InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180301)
  MachineType: Dell Inc. XPS 13 9360
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic 
root=/dev/mapper/system-root ro quiet splash crashkernel=384M-:128M vt.handoff=1
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-13-generic N/A
   linux-backports-modules-4.15.0-13-generic  N/A
   linux-firmware                             1.173
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 01/25/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 2.5.1
  dmi.board.name: 02PG84
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr2.5.1:bd01/25/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn02PG84:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.family: XPS
  dmi.product.name: XPS 13 9360
  dmi.sys.vendor: Dell Inc.

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