[Bug 1676918] Re: Kernel 4.10+ regression: blackscreen when trying to resume from suspend

[Daniel Holz]

** Summary changed:

- blackscreen when trying to resume from suspend
+ Kernel 4.10+ regression: blackscreen when trying to resume from suspend

** Description changed:

  When trying to resume after suspending my Lenovo Yoga 3 11, sometimes
  the screen remains black. The power LED switches from blinking to
  continuous light like it should but nothing else happens. The system
  does not react to anything. I tried to find something in the logs, but
  at least kern.log syslog and xorg.log never have any entries from this
  event.
  
  This problem appeared with Ubuntu 16.04 and 17.04 with Xorg and Wayland.
  
  I'm currently testing Kernel 4.8 from the mainline ppa because of this
  other suspend resume bug, that appeared only with 17.04:
  
  https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1676912
+ 
+ Update: So far I did not encounter any issues with suspend/resume with
+ Kernel 4.8 and 4.9. This seems to be a regression in 4.10.
  
  ---
  ApportVersion: 2.20.4-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 17.04
  InstallationDate: Installed on 2017-03-24 (4 days ago)
  InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Beta amd64 (20170321)
  Package: systemd 232-19
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  Tags:  zesty wayland-session
  Uname: Linux 4.8.17-040817-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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https://bugs.launchpad.net/bugs/1676918

Title:
  Kernel 4.10+ regression: blackscreen when trying to resume from
  suspend

Status in gnome-power-manager package in Ubuntu:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in systemd package in Ubuntu:
  New

Bug description:
  When trying to resume after suspending my Lenovo Yoga 3 11, sometimes
  the screen remains black. The power LED switches from blinking to
  continuous light like it should but nothing else happens. The system
  does not react to anything. I tried to find something in the logs, but
  at least kern.log syslog and xorg.log never have any entries from this
  event.

  This problem appeared with Ubuntu 16.04 and 17.04 with Xorg and
  Wayland.

  I'm currently testing Kernel 4.8 from the mainline ppa because of this
  other suspend resume bug, that appeared only with 17.04:

  https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1676912

  Update: So far I did not encounter any issues with suspend/resume with
  Kernel 4.8 and 4.9. This seems to be a regression in 4.10.

  ---
  ApportVersion: 2.20.4-0ubuntu2
  Architecture: amd64
  CurrentDesktop: GNOME
  DistroRelease: Ubuntu 17.04
  InstallationDate: Installed on 2017-03-24 (4 days ago)
  InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Beta amd64 (20170321)
  Package: systemd 232-19
  PackageArchitecture: amd64
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=de_DE.UTF-8
   SHELL=/bin/bash
  Tags:  zesty wayland-session
  Uname: Linux 4.8.17-040817-generic x86_64
  UnreportableReason: The running kernel is not an Ubuntu kernel
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  _MarkForUpload: True

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