Tong Sun, to see if this already fixed in the latest version of Ubuntu, could you please test http://cdimage.ubuntu.com/daily-live/current/ and advise to the results?
** Tags added: needs-reverse-bisect ** 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/1395343 Title: Ubuntu 14.10 Utopic suspend/resume not working for my Laptop Status in linux package in Ubuntu: Incomplete Bug description: The Ubuntu 14.10 Utopic suspend/resume is not working for my Laptop. I first tried with the Live CD, on failing that, and thinking that suspend might need some disk to write to for the suspend info, I did a HD installation. But still, suspend/resume is still not working. On second attempt (after HD installation), I switched to console and close my Laptop lid. It suspended well, as it has always been. On resume, I see the repeating errors of `sda1` "soft reset failure" (or something like that). Minutes later, I start to see all kinds of disk related errors, disk sector writing error, ext4 journal error, etc. I thus think the reason of `resume` not working is that the HD is not waken up. This is Acer Aspire AS5536, with XUbuntu 14.10 Utopic. Any more info that I can provide? Thanks --- ApportVersion: 2.14.7-0ubuntu8 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tong 2395 F.... pulseaudio /dev/snd/controlC1: tong 2395 F.... pulseaudio CurrentDesktop: XFCE DistroRelease: Ubuntu 14.10 MachineType: Acer Aspire 5536 Package: linux (not installed) ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-23-generic initrd=/boot/initrd.img-3.16.0-23-generic root=UUID=439ff0f7-d3d2-462e-8068-c70327555171 ro ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4 RelatedPackageVersions: linux-restricted-modules-3.16.0-23-generic N/A linux-backports-modules-3.16.0-23-generic N/A linux-firmware 1.138 Tags: utopic utopic Uname: Linux 3.16.0-23-generic x86_64 UnreportableReason: The report belongs to a package that is not installed. UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm arch audio cdrom crew dialout dip disk fax floppy games guest mail news plugdev sudo tape tty users uucp video voice www-data _MarkForUpload: True dmi.bios.date: 02/27/2009 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: V1.03 dmi.board.name: JV50PU dmi.board.vendor: Acer dmi.board.version: Rev dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrV1.03:bd02/27/2009:svnAcer:pnAspire5536:pvr0100:rvnAcer:rnJV50PU:rvrRev:cvnAcer:ct10:cvrN/A: dmi.product.name: Aspire 5536 dmi.product.version: 0100 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1395343/+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