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[bastien <bastien.bernard@xxxxxx>]

I have the same problem on HP probook 450, with Radeon R7 M260/M265.
The last kernel on which resume works is 4.4.3-040403-generic.
I have the problem on all kernels above, including v4.6-rc7-wily.

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https://bugs.launchpad.net/bugs/1574072

Title:
  Ubuntu Mate 16.04 freezes on resume after sleep with any kernel after
  4.4.0.10

Status in linux package in Ubuntu:
  Incomplete

Bug description:
  I've installed 16.04 beta several monthes ago on Fujitsu A555 laptop (the one with AMD Radeon R7 M260 graphic).
  Everything goes fine till kernel updated to 4.4.0.11. Since 4.4.0.11 kernel - if put laptop into sleep and then resume - laptop either freezes or will sure freeze on next resume after sleep. This happens with any kernel in range 4.4.0.11 - 4.4.0.21. I'm forced to stay on kernel 4.4.0.10 to use ubuntu.
  Note: the issue started after force removing FGLRX by upcomming update.
  Please let me know if any of logs or outputs will be helpful - I'll attache them.
  --- 
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  trueman    1829 F.... pulseaudio
   /dev/snd/controlC0:  trueman    1829 F.... pulseaudio
  CurrentDesktop: MATE
  DistroRelease: Ubuntu 16.04
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=cb8dafc9-72a7-47b1-ba4d-cf27ddc33fe2
  InstallationDate: Installed on 2016-03-03 (61 days ago)
  InstallationMedia: Ubuntu-MATE 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160224)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 046d:c526 Logitech, Inc. Nano Receiver
   Bus 001 Device 003: ID 8087:0a2a Intel Corp. 
   Bus 001 Device 002: ID 04f2:b3b4 Chicony Electronics Co., Ltd 
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: FUJITSU LIFEBOOK A555/G
  Package: xserver-xorg-video-amdgpu 1.1.0-1
  PackageArchitecture: amd64
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic.efi.signed root=UUID=d6211aca-675e-4ba4-b8e6-4b094a73b60a ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  Tags:  xenial xenial
  Uname: Linux 4.4.0-21-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
  _MarkForUpload: True
  dmi.bios.date: 10/06/2015
  dmi.bios.vendor: FUJITSU // Insyde Software Corp.
  dmi.bios.version: 1.20
  dmi.board.name: FJNBB3D
  dmi.board.vendor: FUJITSU
  dmi.chassis.type: 10
  dmi.chassis.vendor: FUJITSU
  dmi.modalias: dmi:bvnFUJITSU//InsydeSoftwareCorp.:bvr1.20:bd10/06/2015:svnFUJITSU:pnLIFEBOOKA555/G:pvr:rvnFUJITSU:rnFJNBB3D:rvr:cvnFUJITSU:ct10:cvr:
  dmi.product.name: LIFEBOOK A555/G
  dmi.sys.vendor: FUJITSU

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