David Peall, as per your https://launchpadlibrarian.net/133336555/BootDmesg.txt : [ 0.026147] ------------[ cut here ]------------ [ 0.026153] WARNING: at /build/buildd/linux-3.2.0/drivers/iommu/intr_remapping.c:558 enable_intr_remapping+0x77/0x1ab() [ 0.026157] Hardware name: PowerEdge R520 [ 0.026160] Your BIOS is broken and requested that x2apic be disabled [ 0.026160] This will leave your machine vulnerable to irq-injection attacks [ 0.026161] Use 'intremap=no_x2apic_optout' to override BIOS request ... [ 2.724831] [Firmware Bug]: ACPI: BIOS _OSI(Linux) query ignored
Hence, as per www.dell.com/support/drivers/us/en/19/Product/poweredge-m520 an update is available for your BIOS (2.0.23). During your maintenance window, if you update to this following https://help.ubuntu.com/community/BiosUpdate , does it change anything? If it doesn't, could you please both specify what happened, and just provide the output of the following terminal command: sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date For more on BIOS updates and linux, please see https://help.ubuntu.com/community/ReportingBugs#Bug_reporting_etiquette . Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Summary changed: - BCM95720 Network disconnects and resets with new Dell R520 server + [Dell PowerEdge M520] BCM95720 Network disconnects and resets -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1152580 Title: [Dell PowerEdge M520] BCM95720 Network disconnects and resets To manage notifications about this bug go to: https://bugs.launchpad.net/dell-poweredge/+bug/1152580/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
