Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.19-rc2 ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Incomplete ** Changed in: linux (Ubuntu Bionic) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: needs-bisect -- 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/1789946 Title: DHCP server and client not working since kernel 4.15.0-32 Status in linux package in Ubuntu: Incomplete Status in linux source package in Bionic: Incomplete Bug description: I installed Ubuntu server 18.04 on HP Proliant BL460c Gen8 server blades. I set up DHCP server for PXE boot. It was working, but since kernel update with version 4.15.0-32, PXE boot no longer works. DHCP server logs show "5 bad udp checksums in 5 packets" in a row. DHCP client is also not working on the machine due to similar errors. I switched back to kernel version 4.15-0-29 and it works again. I suspect the newer kernel might have introduced a bug about the network adapter driver. Thanks. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-32-generic 4.15.0-32.35 ProcVersionSignature: Ubuntu 4.15.0-32.35-generic 4.15.18 Uname: Linux 4.15.0-32-generic x86_64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 30 08:56 seq crw-rw---- 1 root audio 116, 33 Aug 30 08:56 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu7.2 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Thu Aug 30 09:08:11 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' MachineType: HP ProLiant BL460c Gen8 PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 mgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-32-generic root=UUID=0a9aa0b0-9a67-11e8-a1dc-fc15b41d0ee0 ro maybe-ubiquity RelatedPackageVersions: linux-restricted-modules-4.15.0-32-generic N/A linux-backports-modules-4.15.0-32-generic N/A linux-firmware 1.173.1 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/20/2013 dmi.bios.vendor: HP dmi.bios.version: I31 dmi.chassis.type: 28 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrI31:bd12/20/2013:svnHP:pnProLiantBL460cGen8:pvr:cvnHP:ct28:cvr: dmi.product.family: ProLiant dmi.product.name: ProLiant BL460c Gen8 dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1789946/+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
