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!
-- 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1511844/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
