There are three follow-up fixes for a89c82249c37: a89c82249c37 PCI: Work around PCIe link training failures 712e49c96706 PCI: Correct error reporting with PCIe failed link retraining 8037ac08c2bb PCI: Clear the LBMS bit after a link retrain f68dea13405c PCI: Revert to the original speed after PCIe failed link retraining
These were are released with Ubuntu-6.8.0-53.55. de9a6c8d5dbfedb5eb3722c822da0490f6a59a45 mentioned in the description doesn't have a 'Fixes' tag so will not be pulled in automatically. -- 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/2100828 Title: ubuntu-24.04: Root port link speed degradation to 2.5GT/s after nvme hot plug Status in linux package in Ubuntu: Triaged Bug description: We found a kenrel issue on Redhat 9.4 and 9.5. nvme pcie link speed will downgrade to 2.5GT/s after hotplug. After analysis, we found this patch casued this issue: a89c82249c37 ("PCI: Work around PCIe link training failures"). This patch also merged into ubuntu 24.04, therefore, this issue will also occur on 24.04. The following commits fix this issue: commit de9a6c8d5dbfedb5eb3722c822da0490f6a59a45 PCI/bwctrl: Add pcie_set_target_speed() to set PCIe Link Speed f68dea13405c94381d08f42dbf0416261622bdad ("PCI: Revert to the original speed after PCIe failed link") Could you help check whetehr ubuntu need add the fix patch on 24.04 version? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2100828/+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
