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[Žilvinas <zilvinasbdrs@xxxxxxxxx>]

I had exactly the same problems with my Acer ES1-711 laptop, and all is
started when bios was upgraded from version 1.02 to 1.05 (Insydeh20).
After much searching on forums (firstly i'm not suspected the bios has
fault because on those days i tried many distros and was thinking
problem is created by some package from downloaded updates, kernel or
so...) finally decided to downgrade bios to a previous 1.02 version and
problem is gone, at least now i can to properly shut down or
restart...Recently the Xubuntu 15.10 kernel was upgraded to
4.2.0-27(from .0-25), will see how system is going now, if any problem -
i'll post here a message, if all is ok - then problem created by bios,
at least for me. p.s. "suggests shutdown/reboot issues can be worked
around by blacklisting dw_dmac and dw_dmac_core. – bain Jan 13 at 17:11"
- had to do this with EVERY distro of linux, if not - problem whit
shutdown/restart persists(but not freezes). Cheers!

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1511844

Title:
  [Acer Aspire ES1-711] System freezes occasionally

Status in linux package in Ubuntu:
  Triaged

Bug description:
  Occasionally my system freezes totally in 15.04 and 15.10. Switching
  to Console via Ctrl-Alt-F1 or rebooting via Ctrl-Alt-Del does not
  work.

  Some days my system will run for many hours without any problem,  and
  on other days I experience 2 or 3 freezes in an hour time.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: linux-image-4.2.0-16-generic 4.2.0-16.19
  ProcVersionSignature: Ubuntu 4.2.0-16.19-generic 4.2.3
  Uname: Linux 4.2.0-16-generic x86_64
  ApportVersion: 2.19.1-0ubuntu4
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  freek      2223 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Fri Oct 30 21:11:26 2015
  EcryptfsInUse: Yes
  HibernationDevice: RESUME=UUID=c4065390-4392-460d-b828-37b12c4605cb
  InstallationDate: Installed on 2015-07-13 (108 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  MachineType: Acer Aspire ES1-711
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.2.0-16-generic.efi.signed root=UUID=772134c4-7cb5-40d6-b0c7-a6bc4a98efe5 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.2.0-16-generic N/A
   linux-backports-modules-4.2.0-16-generic  N/A
   linux-firmware                            1.149
  SourcePackage: linux
  UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev'
  UpgradeStatus: Upgraded to wily on 2015-10-27 (2 days ago)
  dmi.bios.date: 11/07/2014
  dmi.bios.vendor: Insyde Corp.
  dmi.bios.version: V1.05
  dmi.board.asset.tag: Type2 - Board Asset Tag
  dmi.board.name: EA70_BM
  dmi.board.vendor: Acer
  dmi.board.version: Type2 - A01 Board Version
  dmi.chassis.type: 10
  dmi.chassis.vendor: Chassis Manufacturer
  dmi.chassis.version: Chassis Version
  dmi.modalias: dmi:bvnInsydeCorp.:bvrV1.05:bd11/07/2014:svnAcer:pnAspireES1-711:pvrV1.05:rvnAcer:rnEA70_BM:rvrType2-A01BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
  dmi.product.name: Aspire ES1-711
  dmi.product.version: V1.05
  dmi.sys.vendor: Acer

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