This issue appears to be an upstream bug, since you tested the latest upstream kernel. Would it be possible for you to open an upstream bug report[0]? That will allow the upstream Developers to examine the issue, and may provide a quicker resolution to the bug.
Please follow the instructions on the wiki page[0]. The first step is to email the appropriate mailing list. If no response is received, then a bug may be opened on bugzilla.kernel.org. Once this bug is reported upstream, please add the tag: 'kernel-bug- reported-upstream'. [0] https://wiki.ubuntu.com/Bugs/Upstream/kernel ** Changed in: linux (Ubuntu) Status: Confirmed => Triaged -- 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/1771181 Title: Ubuntu 18.04: LSI SAS93xx HBA detects incorrect bios version Status in linux package in Ubuntu: Triaged Bug description: Under /sys/class/scsi_host/host*/ "version_bios" is reported as 16.00.00.00 instead of the correct bios version 08.35.04.00. The number that is reported under the version_bios is actually the version of the package used to flash the card. Installer(SAS3FLSH) DOS:\sas3flash_dos_rel\sas3flash.exe 16.00.00.00 ProblemType: Bug lsb_release -rd: Description: Ubuntu 18.04 LTS Release: 18.04 Uname: Linux Uname -r: 4.15.0-20-generic Date: Mon May 14 13:18 2018 Architecture: x86_64 Kernel driver in use: mpt3sas Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1771181/+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