Hi Kai-Heng, thanks for your response. I followed your advice and installed these packages from the ppa: linux-headers-5.3.0-050300rc5_5.3.0-050300rc5.201908182231_all.deb linux-headers-5.3.0-050300rc5-generic_5.3.0-050300rc5.201908182231_amd64.deb linux-image-unsigned-5.3.0-050300rc5-generic_5.3.0-050300rc5.201908182231_amd64.deb linux-modules-5.3.0-050300rc5-generic_5.3.0-050300rc5.201908182231_amd64.deb
I then rebooted the system and checked versions with "uname -a" and "modinfo mpt3sas": (kernel 5.3.0) (mpt3sas driver 29.100.00.00) The stress test has now been running for 4h with no errors, which is 8x as long as the previous best on 18.04. I will leave the stress test running overnight in the event that the bug still exists but occurs less frequently. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1841132 Title: mpt3sas - storage controller resets under heavy disk io To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841132/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs