This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-focal

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https://bugs.launchpad.net/bugs/1861837

Title:
  machine doesn't come up after suspend and re-opening the lid

Status in linux package in Ubuntu:
  Confirmed
Status in linux-oem-osp1 package in Ubuntu:
  Invalid
Status in linux source package in Bionic:
  Invalid
Status in linux-oem-osp1 source package in Bionic:
  Fix Committed
Status in linux source package in Eoan:
  New
Status in linux-oem-osp1 source package in Eoan:
  Invalid
Status in linux source package in Focal:
  Confirmed
Status in linux-oem-osp1 source package in Focal:
  Invalid

Bug description:
  If the sof driver fails to load the firmware, it doesn't release the
  resource, then it make the system hang when suspending and resuming.

  After this patchset is applied, please also apply the patchset we
  just reverted 2 weeks ago, since this patchset is the fixing patches
  for the patches we reverted (#1857409). If need me to resend the
  reverted patches, I will resend them.

  
  [Impact]
  The machine hangs during suspend/resume if the sof driver fails to
  load firmware.

  [Fix]
  This bug is fixed in the mainline kernel v5.6-rc1, now backported
  those patches to ubuntu kernel

  [Test Case]
  sudo mv /lib/firmware/intel/sof /lib/firmware/intel/sof-bak, reboot
  then suspend and resume, the system will not hang anymore

  And if the sof driver load the firmware successfully, the audio
  functions all worked well as before.

  [Regression Risk]
  Low, the patches are backported from upstream kernel, and I tested
  these patches on Lenovo and Dell dmic machines.


  A Carbon X1 running current focal (fresh focal installation), and the
  linux-oem kernel doesn't come up after suspend and re-opening the lid.
  I have to force a power-off (holding the power button for a few
  seconds), and restart the machine.

  What information can I provide?
  ---
  ProblemType: Bug
  ApportVersion: 2.20.11-0ubuntu16
  Architecture: amd64
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', 
'/dev/snd/timer'] failed with exit code 1:
  CurrentDesktop: ubuntu:GNOME
  DistroRelease: Ubuntu 20.04
  InstallationDate: Installed on 2020-01-17 (17 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200117)
  MachineType: LENOVO 20QDCTO1WW
  Package: linux-oem (not installed)
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-13-generic 
root=/dev/mapper/vgubuntu-root ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 5.4.0-13.16-generic 5.4.16
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-13-generic N/A
   linux-backports-modules-5.4.0-13-generic  N/A
   linux-firmware                            1.186
  Tags:  focal
  Uname: Linux 5.4.0-13-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 11/26/2019
  dmi.bios.vendor: LENOVO
  dmi.bios.version: N2HET42W (1.25 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20QDCTO1WW
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0J40697 WIN
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: None
  dmi.modalias: 
dmi:bvnLENOVO:bvrN2HET42W(1.25):bd11/26/2019:svnLENOVO:pn20QDCTO1WW:pvrThinkPadX1Carbon7th:rvnLENOVO:rn20QDCTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
  dmi.product.family: ThinkPad X1 Carbon 7th
  dmi.product.name: 20QDCTO1WW
  dmi.product.sku: LENOVO_MT_20QD_BU_Think_FM_ThinkPad X1 Carbon 7th
  dmi.product.version: ThinkPad X1 Carbon 7th
  dmi.sys.vendor: LENOVO

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