Public bug reported: SRU justification:
[Impact] System will reboot when resume from S3 with some TPM chips installed. [Fix] stable patch is merged in 4.15 kernel: 888d867df441 (tpm: cmd_ready command can be issued only after granting locality) it needs a fix: tpm: separate cmd_ready/go_idle from runtime_pm these 2 patches fix the issue and enable tpm resume after seprating cmd_ready/go_idle. [Test] Verified on hardware. resume from S3 about 30 times with positive result. [Regression Potential] Medium, stable patches backported. Verified on hardware. backported with minor adjustion. These 2 patches are included in 4.18 and 5.0 kernel, only 4.15 needs them. ** Affects: hwe-next Importance: Undecided Assignee: AaronMa (mapengyu) Status: New ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: oem-priority originate-from-1833655 sutton ** Tags added: oem-priority originate-from-1833655 sutton ** Changed in: hwe-next Assignee: (unassigned) => AaronMa (mapengyu) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1836031 Title: [SRU][B/B-OEM]Fix resume failure on some TPM chips To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1836031/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs