** Summary changed: - acer-wmi module hangs laptop for 10 seconds on boot/modprobe + [Acer Aspire 7740] acer-wmi module hangs laptop for 10 seconds on boot/modprobe
** Tags removed: needs-kernel-logs ** Tags added: latest-bios-v1.27 -- 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/1262797 Title: [Acer Aspire 7740] acer-wmi module hangs laptop for 10 seconds on boot/modprobe Status in “linux” package in Ubuntu: Incomplete Bug description: I have a Acer Aspire 7740, and noticed after installing that Ubuntu 13.10 (kernel 3.11.0-14) hangs for 10 seconds early in the boot process. It continues after that. The screen freezes and the fans start spinning very hard. The last dmesg line before the pause is a info message about acer-wmi. When modprobing this module after boot the same symptoms occur. Ubuntu hangs, and reacts normally after 10 seconds. So, clearly something is wrong with acer-wmi. Maybe it should not be loaded with this laptop version, or it has a bug in it. I will add a dmesg from a boot with acer-wmi enabled. WORKAROUND: I blacklisted acer-wmi in /etc/modprobe.d/blacklist.conf and updated initramfs. Now ubuntu boots as it should without hanging. No functionality appears to be lost. Bluetooth and wifi work, also the volume keys. --- ApportVersion: 2.12.5-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: peter 1729 F.... pulseaudio DistroRelease: Ubuntu 13.10 HibernationDevice: RESUME=UUID=0ef58455-0f7e-412c-865b-a22b63f559d9 InstallationDate: Installed on 2013-12-19 (0 days ago) InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1) MachineType: Acer Aspire 7740 MarkForUpload: True Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-14-generic root=UUID=4333334c-62c1-414f-8227-e09a5f9da742 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7 RelatedPackageVersions: linux-restricted-modules-3.11.0-14-generic N/A linux-backports-modules-3.11.0-14-generic N/A linux-firmware 1.116 Tags: saucy Uname: Linux 3.11.0-14-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo dmi.bios.date: 07/29/2010 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: V1.27 dmi.board.asset.tag: No Asset Tag dmi.board.name: Aspire 7740 dmi.board.vendor: Acer dmi.board.version: V1.27 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.27 dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.27:bd07/29/2010:svnAcer:pnAspire7740:pvrV1.27:rvnAcer:rnAspire7740:rvrV1.27:cvnAcer:ct10:cvrV1.27: dmi.product.name: Aspire 7740 dmi.product.version: V1.27 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1262797/+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
