HaiyueLin, as per your https://launchpadlibrarian.net/146067857/BootDmesg.txt : [ 0.126413] mtrr: your CPUs had inconsistent variable MTRR settings [ 0.126414] mtrr: probably your BIOS does not setup all CPUs. ... [ 0.147453] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
Hence, as per http://us.acer.com/ac/en/US/content/drivers an update is available for your BIOS (2.23). If you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date Please note your current BIOS is already in the Bug Description, so posting this on the old BIOS would not be helpful. For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Thank you for your understanding. ** Tags added: bios-outdated-2.23 ** Changed in: linux (Ubuntu) Importance: Medium => Low ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1184650 Title: [Acer Aspire v3-771g] System boots into a black screen in EFI mode, but desktop loads normally in legacy mode Status in “linux” package in Ubuntu: Incomplete Bug description: I have a new pc portable acer v3-771g with Win 8 in EFI mode. I have tried Ubuntu 12.04.2 and 13.04. If I don't use the nomodeset code in EFI mode, the system boots into a black screen and to tty1 only (no desktop) with nomodeset. I have tried also Fedora 18 and Opensuse 12.3 and the problem is the same except that Opensuse boots in EFI mode with the nomodeset parameter. WORKAROUND: In Raring, change the BIOS to boot in Legacy mode. --- ApportVersion: 2.9.2-0ubuntu8.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sasdsky 1701 F.... pulseaudio DistroRelease: Ubuntu 13.04 HibernationDevice: RESUME=UUID=ed003934-173d-4035-8930-e8009a1f6fc8 InstallationDate: Installed on 2013-06-03 (55 days ago) InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424) MachineType: Acer Aspire V3-771 MarkForUpload: True Package: linux (not installed) ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.8.0-26-generic root=UUID=755018a9-6de4-46fa-aa8c-c0004515c089 ro nomodeset locale=zh_CN quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.8.0-26.38-generic 3.8.13.2 RelatedPackageVersions: linux-restricted-modules-3.8.0-26-generic N/A linux-backports-modules-3.8.0-26-generic N/A linux-firmware 1.106 Tags: raring Uname: Linux 3.8.0-26-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo WifiSyslog: dmi.bios.date: 11/13/2012 dmi.bios.vendor: Insyde Corp. dmi.bios.version: V2.13 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: VA70_HC dmi.board.vendor: Acer dmi.board.version: Type2 - Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Chassis Manufacturer dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsydeCorp.:bvrV2.13:bd11/13/2012:svnAcer:pnAspireV3-771:pvrV2.13:rvnAcer:rnVA70_HC:rvrType2-BoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion: dmi.product.name: Aspire V3-771 dmi.product.version: V2.13 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1184650/+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