Public bug reported: I experienced mysterious hangs of the machine. No crash, no kernel panic, Alt+SysRq didn't work, NumLock was dead.
After some experiments, I found this recipe to reproduce the problem: 1. Download something large (like a big git repository) from another machine that is on the same gigabit LAN (you need quite some throuput). In the syslog, you'll start to see messages like these: Aug 5 14:27:48 adigulla kernel: [ 1491.908445] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:49 adigulla kernel: [ 1492.417302] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:49 adigulla kernel: [ 1492.556858] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:50 adigulla kernel: [ 1492.965761] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:50 adigulla kernel: [ 1493.135401] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:50 adigulla kernel: [ 1493.484479] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:50 adigulla kernel: [ 1493.644146] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:51 adigulla kernel: [ 1494.342378] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:51 adigulla kernel: [ 1494.432170] r8169 0000:03:00.0: eth0: link up Aug 5 14:27:54 adigulla kernel: [ 1497.235083] net_ratelimit: 11 callbacks suppressed Aug 5 14:27:54 adigulla kernel: [ 1497.235087] r8169 0000:03:00.0: eth0: link up 2. Now start something which hogs the hard disk (like building a linux kernel). Eventually, the whole system will hang. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: linux-generic 2.6.38.11.26 ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8 Uname: Linux 2.6.38-11-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: adigulla 2087 F.... pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf3ff8000 irq 55' Mixer name : 'Realtek ALC887' Components : 'HDA:10ec0887,1043840b,00100202' Controls : 24 Simple ctrls : 14 Card1.Amixer.info: Card hw:1 'NVidia'/'HDA NVidia at 0xf7dfc000 irq 17' Mixer name : 'Nvidia GPU 12 HDMI/DP' Components : 'HDA:10de0012,10de0101,00100100' Controls : 16 Simple ctrls : 4 Date: Fri Aug 5 15:06:14 2011 HibernationDevice: RESUME=UUID=58b8fc76-dcbe-4a54-81fe-f4c07457225d IwConfig: lo no wireless extensions. eth0 no wireless extensions. MachineType: System manufacturer System Product Name ProcEnviron: LANGUAGE= PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=7e4939e5-9658-4007-8eb0-3185046ffaac ro splash quiet vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-2.6.38-11-generic N/A linux-backports-modules-2.6.38-11-generic N/A linux-firmware 1.52.1 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to natty on 2011-04-28 (98 days ago) dmi.bios.date: 10/29/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0901 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: P7H55-M/USB3 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.:bvr0901:bd10/29/2010:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP7H55-M/USB3:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion: dmi.product.name: System Product Name dmi.product.version: System Version dmi.sys.vendor: System manufacturer ** Affects: linux-meta (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug natty -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/821454 Title: r8169 hangs after many "link up" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-meta/+bug/821454/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs