apport information ** Tags added: apport-collected xenial
** Description changed: After upgrading 14.04 to 16.04 I couldn't send big emails with attachments, I couldn't use google drive. Sometimes lowering the MTU worked. I was able to get uploading of large files working again by playing with MTU probing and discovery: echo 1 > /proc/sys/net/ipv4/tcp_mtu_probing echo 1024 > /proc/sys/net/ipv4/tcp_base_mss Basic MTU related issues should be setup by default, perhaps interfaces need to updated during upgrade? Ubuntu 4.4.0-21.37-generic 4.4.6 - Without enabling tcp_mtu_probling I couldn't upload large files over - HTTPS and SMTP w/ TLS. + Without enabling tcp_mtu_probling I couldn't upload large files over HTTPS and SMTP w/ TLS. + --- + ApportVersion: 2.20.1-0ubuntu2 + Architecture: amd64 + AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/dsp', '/dev/snd/by-path', '/dev/snd/hwC0D3', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: + CurrentDesktop: GNOME-Flashback:Unity + DistroRelease: Ubuntu 16.04 + EcryptfsInUse: Yes + InstallationDate: Installed on 2011-12-09 (1599 days ago) + InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) + MachineType: LENOVO 4294CTO + Package: linux (not installed) + ProcFB: 0 inteldrmfb + ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-21-generic root=UUID=2e608b01-21da-49d9-a0fa-ff80b90454a8 ro pcie_aspm=force i915.i915_enable_rc6=1 i915.lvds_downclock=1 i915.i915_enable_fbc=1 quiet splash nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw nomdmonddf nomdmonisw vt.handoff=7 + ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 + PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon. + RelatedPackageVersions: + linux-restricted-modules-4.4.0-21-generic N/A + linux-backports-modules-4.4.0-21-generic N/A + linux-firmware 1.157 + RfKill: + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no + Tags: xenial + Uname: Linux 4.4.0-21-generic x86_64 + UpgradeStatus: Upgraded to xenial on 2016-04-25 (0 days ago) + UserGroups: adm admin cdrom dialout docker libvirtd lpadmin netdev plugdev sambashare video + _MarkForUpload: True + dmi.bios.date: 10/18/2011 + dmi.bios.vendor: LENOVO + dmi.bios.version: 8DET54WW (1.24 ) + dmi.board.asset.tag: Not Available + dmi.board.name: 4294CTO + dmi.board.vendor: LENOVO + dmi.board.version: Not Available + dmi.chassis.asset.tag: No Asset Information + dmi.chassis.type: 10 + dmi.chassis.vendor: LENOVO + dmi.chassis.version: Not Available + dmi.modalias: dmi:bvnLENOVO:bvr8DET54WW(1.24):bd10/18/2011:svnLENOVO:pn4294CTO:pvrThinkPadX220Tablet:rvnLENOVO:rn4294CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: + dmi.product.name: 4294CTO + dmi.product.version: ThinkPad X220 Tablet + dmi.sys.vendor: LENOVO ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/1574933/+attachment/4647353/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574933 Title: Big uploads blocked when upgrading from 14.04 to 16.04 -- TCP MTU Discovery not properly set. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1574933/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
