SRU: * https://lists.ubuntu.com/archives/kernel-team/2022-January/127429.html (linux-firmware/focal)
** Description changed: - TBD. + [SRU Justification] + + [Impact] + + On AMD Yellow Carp B0 platforms, S0i3 is still not working. + + [Fix] + + This denpends on a few fixes for kernel driver that are all either in + v5.17-rc1 or in stable linux-5.1x.y, along with an already upstreamed + dmcub firmware. + + [Test Case] + + On AMD RMT CRB board, + 1. apply both kernel and firmware fixes + 2. module blacklist amd_sfh as it's still under development, + 3. trigger system suspend. Use power button to wake up the device. + 4. check /sys/kernel/debug/amd_pmc/s0ix_stats, the values shall be non-zero + + On without any of above, the board may not cut device power during + suspend, and/or fail to resume and leaving a blank screen, and/or s0ix + stats remain all zeros. + + [Where problems could occur] + + So far all the patches can be cleanly applied, and they're being + progressively proposed to linux-stable. + + [Other Info] + + For kernel driver fixes, patches for both oem-5.14 and jammy are + necessary; for firmware, that has been available in jammy branch but not + yet released, so only Focal will be nominated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1957026 Title: AMD Yellow Carp DMCUB fw update for s0i3 B0 fixes To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1957026/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
