The above patch queued for 3.13 in for-linus branch from Bjorn Helgaas https://git.kernel.org/cgit/linux/kernel/git/helgaas/pci.git/commit/?h=for-linus&id=4fc9bbf98fd66f879e628d8537ba7c240be2b58e
@Tarpoon: is not upstream yet, but you can git cherry-pick, or manual apply, etc. [quote] PCI: Disable Bus Master only on kexec reboot Add a flag to tell the PCI subsystem that kernel is shutting down in preparation to kexec a kernel. Add code in PCI subsystem to use this flag to clear Bus Master bit on PCI devices only in case of kexec reboot. This fixes a power-off problem on Acer Aspire V5-573G and likely other machines and avoids any other issues caused by clearing Bus Master bit on PCI devices in normal shutdown path. The problem was introduced by b566a22c2332 ("PCI: disable Bus Master on PCI device shutdown"). This patch is based on discussion at http://marc.info/?l=linux-pci&m=138425645204355&w=2 Link: https://bugzilla.kernel.org/show_bug.cgi?id=63861 Reported-by: Chang Liu <cl9...@gmail.com> Signed-off-by: Khalid Aziz <khalid.a...@oracle.com> Signed-off-by: Bjorn Helgaas <bhelg...@google.com> Acked-by: Konstantin Khlebnikov <koc...@gmail.com> Cc: sta...@vger.kernel.org # v3.5+ [/quote] ** Bug watch added: Linux Kernel Bug Tracker #63861 http://bugzilla.kernel.org/show_bug.cgi?id=63861 -- 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/1257338 Title: [Acer Aspire E1-572] Freezes at shutdown screen when attempting to shutdown Status in “linux” package in Ubuntu: Triaged Bug description: I am using Kubuntu, and the screen freezes on shutdown with the kubuntu logo showing. Tried kernel parameters reboot=pci and reboot=bios but didn't change anything. WORKAROUND: Suspend to ram, suspend to disk and rebooting works fine. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: linux-image-3.11.0-13-generic 3.11.0-13.20 ProcVersionSignature: Ubuntu 3.11.0-13.20-generic 3.11.6 Uname: Linux 3.11.0-13-generic x86_64 ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: christian 1853 F.... pulseaudio /dev/snd/controlC0: christian 1853 F.... pulseaudio Date: Tue Dec 3 16:27:24 2013 HibernationDevice: RESUME=UUID=d6cedfb1-95fc-451c-81f6-480008d8ef40 InstallationDate: Installed on 2013-12-01 (2 days ago) InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: Acer Aspire E1-572 MarkForUpload: True ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-13-generic root=UUID=20d2d081-e8c6-4e7e-9c59-0398d081c3b5 ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.11.0-13-generic N/A linux-backports-modules-3.11.0-13-generic N/A linux-firmware 1.116 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/21/2013 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V2.04 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: EA50_HW dmi.board.vendor: Acer dmi.board.version: V2.04 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.04:bd05/21/2013:svnAcer:pnAspireE1-572:pvrV2.04:rvnAcer:rnEA50_HW:rvrV2.04:cvnAcer:ct10:cvrChassisVersion: dmi.product.name: Aspire E1-572 dmi.product.version: V2.04 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1257338/+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