Sure thing. Could you please add this to "Vivid"? It appears the latest kernel release for 14.04.3 may now suffer from this issue too.
============================================================ Matthew Giassa, MASc, BASc, EIT Security and Embedded Systems Specialist linkedin: https://ca.linkedin.com/in/giassa e-mail: [email protected] website: www.giassa.net > -------- Original Message -------- > Subject: [Bug 1577024] Re: Kernel 4.2.X and 4.4.X - Fix USB3.0 link > power management (LPM) claim/release logic in USBFS > From: Joseph Salisbury <[email protected]> > Date: Thu, May 05, 2016 11:09 am > To: [email protected] > > > Can you add a comment here when the patch makes it into mainline? We > can then cherry-pick and SRU it. > > ** Tags added: kernel-da-key > > ** Changed in: linux (Ubuntu) > Status: Confirmed => Triaged > > ** Changed in: linux (Ubuntu) > Importance: Undecided => Medium > > ** No longer affects: linux-image-4.2.0-rc7 (Ubuntu) > > ** Also affects: linux (Ubuntu Xenial) > Importance: Undecided > Status: New > > ** Also affects: linux (Ubuntu Wily) > Importance: Undecided > Status: New > > ** Changed in: linux (Ubuntu Wily) > Status: New => Triaged > > ** Changed in: linux (Ubuntu Xenial) > Status: New => Triaged > > ** Changed in: linux (Ubuntu Wily) > Importance: Undecided => Medium > > ** Changed in: linux (Ubuntu Xenial) > Importance: Undecided => Medium > > -- > You received this bug notification because you are subscribed to the bug > report. > https://bugs.launchpad.net/bugs/1577024 > > Title: > Kernel 4.2.X and 4.4.X - Fix USB3.0 link power management (LPM) > claim/release logic in USBFS > > Status in linux package in Ubuntu: > Triaged > Status in linux source package in Wily: > Triaged > Status in linux source package in Xenial: > Triaged > > Bug description: > I am currently carrying out kernel testing and debugging with Alan Stern on > the mainline kernel. Alan has proposed a patch to resolve a bug in USBFS that > causes USB machine vision cameras to fail on kernels that contain the > following patch: > commit e951f84074b84a3f5aecbffd01da74576e0068d5 > Author: Lu Baolu <[email protected]> > Date: Tue Jun 16 09:08:26 2015 +0800 > usb: core: lpm: set lpm_capable for root hub device > commit 2d2a316765d956bc5cb6bb367b2ec52ca59ab8e9 upstream. > > There is an issue in this patch that impacts software that rapidly > issues claim/release calls in USBFS, and all of our customers that use > Ubuntu 14.04.4 (kernel 4.2.x) and Ubuntu 16.04 (kernel 4.4.x) are > unable to communicate with their machine vision cameras using our > software stack. > > The patch for the mainline kernel is being tested, and is currently posted, > along with a history of this issue, at: > https://bugzilla.kernel.org/show_bug.cgi?id=115961 > > Right now, all of our customers have to either use an older kernel, or > manually patch their own kernel with the fix provided by Alan if they > are required to use a newer kernel. I am raising this bug so that, > once the patch is submitted to the the mainline/linus series, it can > be included in the next "monthly" kernel update made available to the > general public, and so our customers can just run a normal "vanilla" > system without having to rely on manually patching their kernel every > time they need to update. > > I can be contacted at: > [email protected] > [email protected] > > Thank you. > > ProblemType: Bug > DistroRelease: Ubuntu 14.04 > Package: linux-image-3.13.0-55-generic 3.13.0-55.94 > ProcVersionSignature: Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20 > Uname: Linux 3.13.0-55-generic i686 > NonfreeKernelModules: nvidia > ApportVersion: 2.14.1-0ubuntu3.19 > Architecture: i386 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC0: owner 4035 F.... pulseaudio > CurrentDesktop: Unity > Date: Sat Apr 30 10:36:15 2016 > EcryptfsInUse: Yes > HibernationDevice: RESUME=UUID=0287e25d-68d6-4390-aced-c682b8e13b60 > InstallationDate: Installed on 2013-09-23 (949 days ago) > InstallationMedia: Ubuntu 12.04.3 LTS "Precise Pangolin" - Release i386 > (20130820.1) > IwConfig: > lo no wireless extensions. > > cscotun0 no wireless extensions. > > eth0 no wireless extensions. > MachineType: Hewlett-Packard HP xw4600 Workstation > ProcFB: > > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-55-generic > root=UUID=292845c9-c333-4592-aa06-bc01f45d3ee6 ro quiet splash > RelatedPackageVersions: > linux-restricted-modules-3.13.0-55-generic N/A > linux-backports-modules-3.13.0-55-generic N/A > linux-firmware 1.127.19 > RfKill: > > SourcePackage: linux > UpgradeStatus: Upgraded to trusty on 2014-07-30 (639 days ago) > dmi.bios.date: 07/09/2012 > dmi.bios.vendor: Hewlett-Packard > dmi.bios.version: 786F3 v01.34 > dmi.board.asset.tag: CAC94101JZ > dmi.board.name: 0AA0h > dmi.board.vendor: Hewlett-Packard > dmi.chassis.asset.tag: CAC94101JZ > dmi.chassis.type: 6 > dmi.chassis.vendor: Hewlett-Packard > dmi.modalias: > dmi:bvnHewlett-Packard:bvr786F3v01.34:bd07/09/2012:svnHewlett-Packard:pnHPxw4600Workstation:pvr:rvnHewlett-Packard:rn0AA0h:rvr:cvnHewlett-Packard:ct6:cvr: > dmi.product.name: HP xw4600 Workstation > dmi.sys.vendor: Hewlett-Packard > > To manage notifications about this bug go to: > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577024/+subscriptions ** Bug watch added: Linux Kernel Bug Tracker #115961 http://bugzilla.kernel.org/show_bug.cgi?id=115961 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1577024 Title: Kernel 4.2.X and 4.4.X - Fix USB3.0 link power management (LPM) claim/release logic in USBFS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577024/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
