It sounds like some part of the system has crashed. To help us find the cause of the crash please follow these steps:
1. Look in /var/crash for crash files and if found run: ubuntu-bug YOURFILE.crash Then tell us the ID of the newly-created bug. 2. If step 1 failed then look at https://errors.ubuntu.com/user/ID where ID is the content of file /var/lib/whoopsie/whoopsie-id on the machine. Do you find any links to recent problems on that page? If so then please send the links to us. 3. If step 2 also failed then apply the workaround from bug 994921, reboot, reproduce the crash, and retry step 1. Please take care to avoid attaching .crash files to bugs as we are unable to process them as file attachments. It would also be a security risk for yourself. -- 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/1801526 Title: Ubuntu internal error when copying 3TB of data Status in linux package in Ubuntu: Incomplete Bug description: I was trying to copy my data off a 4TB external USB drive with a HFS+ file system to a 6TB external USB drive with an NTFS file system. System very sluggish with a 6TB drive mounted. Both copying with Caja drag-and-drop and Terminal cp -anR from to were not working properly. After 3 days, very little had (only 2.3GB) had been copied. Then I got a Ubuntu internal error window. I checked the "bemember this" box and clicked Send. Got yet another error window (see attachment). ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-38-generic 4.15.0-38.41 ProcVersionSignature: Ubuntu 4.15.0-38.41-generic 4.15.18 Uname: Linux 4.15.0-38-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: robert 2183 F.... pulseaudio /dev/snd/controlC0: robert 2183 F.... pulseaudio CurrentDesktop: MATE Date: Sat Nov 3 10:41:31 2018 HibernationDevice: RESUME=UUID=aa95f07d-f769-44ca-8b33-0c5b3c78bdeb InstallationDate: Installed on 2018-10-25 (9 days ago) InstallationMedia: Ubuntu-MATE 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) MachineType: System manufacturer System Product Name ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-38-generic root=UUID=26dc3ca5-f3ae-47eb-92b6-4f02ed5ba4f0 ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-38-generic N/A linux-backports-modules-4.15.0-38-generic N/A linux-firmware 1.173.1 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1301 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: A88XM-A dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev X.0x dmi.chassis.asset.tag: Asset-1234567890 dmi.chassis.type: 3 dmi.chassis.vendor: Chassis Manufacture dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1301:bd04/01/2014:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnA88XM-A:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name 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/1801526/+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