SRU: https://lists.ubuntu.com/archives/kernel- team/2022-March/128466.html (linux-firmware/focal)
** Description changed: + [SRU Justification] + + [Impact] + + mt7921e may not appear in the bus enumeration during warm boot stress + tests. + + [Fix] + + This can only be fixed in the firmware. + + [Test Case] + + Run checkbox reboot stress tests to try trigger this issue: + + $ checkbox-cli run com.canonical.certification::stress/reboot + + [Where problems could occur] + + While this backports proprietary fw blob, it may bring driver + compatibility issues we cannot know in the first place. + + Jammy has these already, so only Focal (for oem-5.14) is nominated. + We don't have mt7921e hardware v2.1 support in Impish 5.13 kernel. + + ========== original bug report ========== + [Summary] mt7921 wlan device disappear after warm reset, can be recovered by cold boot. [Reproduce Steps] 1. do warm boot stress 100 times 2. check wifi function after stress finished 3. wifi has no function and mt7921e device disappeared [Results] Expected: wifi works normally Actual: wifi broken -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1963614 Title: mt7921e device disappear after warm boot stress To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1963614/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
