Phill, at your earliest convenience, could you please test the latest upstream kernel available from the very top line at the top of the page from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D (the release names are irrelevant for testing, and please do not test the daily folder)? Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . This will allow additional upstream developers to examine the issue.
If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Once testing of the latest upstream kernel is complete, please mark this report's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Description changed: - If you run, for example, `cp file1 file1-copy` with several GB of data, - give it a minute, then the user interface stops responding and the mouse - stops moving. There are occasional glimmers of response but it's like - watching a video one frame at a time. I would expect the user interface - to continue to work barring the occasional interruption. When the copy - completes, or if you can interrupt it, the user interface works normally - again. + Any heavy and prolonged disc activity causes the UI, mouse, and terminal + to stop responding. For example, copying several GB of data via `cp + file1 file1-copy`. When the copy completes, or if it's interrupted, the + user interface responds normally. The problem occurs even when there's + several GB of memory to spare. Other kernel schedulers don't change + anything. - Despite the specific title, which I'll explain next, the command you use - doesn't matter. Any heavy and prolonged disc activity does it. - Ironically, running `ubuntu-bug kernel` to report this problem caused - the mouse and UI to freeze for a few seconds. Scheduled backups also - cause it. - - So, why the specific title? This has been reported by other user and - myself before but in more general terms. Those reports are drowned in - comments by frustrated users clutching at straws to the point where it's - hard to see where they're going. I thought it might be helpful to limit - this bug report to a very specific and easily testable example so that - we don't get side-tracked working around what is probably a kernel - scheduling issue. - - This is not an isolated or new problem. I've been using ubuntu since - 2008 on several different machines and it's always been a problem. Maybe - it's a little worse now, maybe not. In any case, there's no point - bisecting the kernel as it's not a regression. - - The problem also affects the terminal. If you switch to another TTY the - log-in takes ages, and usually doesn't complete until the heavy disk - activity has finished. This can be extremely frustrating when you don't - know which process is making mischief and you want to use a terminal to - find it and stop it. - - It is possible to alleviate the problem by disabling swap. I did this on - the hunch that processes were being frozen while memory was paged in - from the disk. Unfortunately my current workload makes this solution - impractical. What's odd is that the problem occurs even when there's - several GB of memory to spare. After re-enabling swap you need to wait a - little before re-testing to reproduce the problem. - - I've also tried other kernel schedulers. None help. - - I'm a software developer and happy to get my hands dirty, but sadly I'm - quite unfamiliar with the kernel. + WORKAROUND: Disable swap. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1 ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14 Uname: Linux 3.16.0-45-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.12 Architecture: amd64 CurrentDesktop: Unity Date: Thu Aug 20 12:21:59 2015 InstallationDate: Installed on 2015-07-13 (37 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: linux-lts-utopic UpgradeStatus: No upgrade log present (probably fresh install) - --- + --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/pcmC0D0p: phill 2715 F...m pulseaudio - /dev/snd/controlC0: phill 2715 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/pcmC0D0p: phill 2715 F...m pulseaudio + /dev/snd/controlC0: phill 2715 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=fab564c9-5c8a-439f-8b9d-a10c8a4b75ad InstallationDate: Installed on 2015-07-13 (165 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: System manufacturer V-P5G45 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-56-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-56.75~14.04.1-generic 3.16.7-ckt20 RelatedPackageVersions: - linux-restricted-modules-3.16.0-56-generic N/A - linux-backports-modules-3.16.0-56-generic N/A - linux-firmware 1.127.19 + linux-restricted-modules-3.16.0-56-generic N/A + linux-backports-modules-3.16.0-56-generic N/A + linux-firmware 1.127.19 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no Tags: trusty Uname: Linux 3.16.0-56-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/18/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0405 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: V-P5G45 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0405:bd05/18/2009:svnSystemmanufacturer:pnV-P5G45:pvrSystemVersion:rvnASUSTeKComputerINC.:rnV-P5G45:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: V-P5G45 dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** Changed in: linux (Ubuntu) Importance: Low => Medium -- 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/1486997 Title: Copying a large file causes user interface to stop responding Status in linux package in Ubuntu: Incomplete Bug description: Any heavy and prolonged disc activity causes the UI, mouse, and terminal to stop responding. For example, copying several GB of data via `cp file1 file1-copy`. When the copy completes, or if it's interrupted, the user interface responds normally. The problem occurs even when there's several GB of memory to spare. Other kernel schedulers don't change anything. WORKAROUND: Disable swap. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.16.0-45-generic 3.16.0-45.60~14.04.1 ProcVersionSignature: Ubuntu 3.16.0-45.60~14.04.1-generic 3.16.7-ckt14 Uname: Linux 3.16.0-45-generic x86_64 ApportVersion: 2.14.1-0ubuntu3.12 Architecture: amd64 CurrentDesktop: Unity Date: Thu Aug 20 12:21:59 2015 InstallationDate: Installed on 2015-07-13 (37 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) SourcePackage: linux-lts-utopic UpgradeStatus: No upgrade log present (probably fresh install) --- ApportVersion: 2.14.1-0ubuntu3.19 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/pcmC0D0p: phill 2715 F...m pulseaudio /dev/snd/controlC0: phill 2715 F.... pulseaudio CurrentDesktop: Unity DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=UUID=fab564c9-5c8a-439f-8b9d-a10c8a4b75ad InstallationDate: Installed on 2015-07-13 (165 days ago) InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: System manufacturer V-P5G45 Package: linux (not installed) ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-56-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 3.16.0-56.75~14.04.1-generic 3.16.7-ckt20 RelatedPackageVersions: linux-restricted-modules-3.16.0-56-generic N/A linux-backports-modules-3.16.0-56-generic N/A linux-firmware 1.127.19 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no Tags: trusty Uname: Linux 3.16.0-56-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/18/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0405 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: V-P5G45 dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0405:bd05/18/2009:svnSystemmanufacturer:pnV-P5G45:pvrSystemVersion:rvnASUSTeKComputerINC.:rnV-P5G45:rvrRev1.xx:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: V-P5G45 dmi.product.version: System Version dmi.sys.vendor: System manufacturer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1486997/+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
