Public bug reported: [Impact] Connect with the WD19TB on the right TB port and plug the USB dongle on it, the machine can't recognize the USB dongle.
[Fix] Enable the PCI ACS when Intel IOMMU is detected with platform opt in hint. [test] With the fix, the machine can recognize the USB dongle. [Regression Potential] Low. the patch has landed on the mainline kernel. ** Affects: linux-oem-5.6 (Ubuntu) Importance: Undecided Status: New ** Affects: linux-oem-5.6 (Ubuntu Focal) Importance: Undecided Assignee: koba (kobako) Status: In Progress ** Changed in: linux (Ubuntu) Assignee: (unassigned) => koba (kobako) ** Package changed: linux (Ubuntu) => linux-oem-5.6 (Ubuntu) ** Changed in: linux-oem-5.6 (Ubuntu) Assignee: koba (kobako) => (unassigned) ** Also affects: linux-oem-5.6 (Ubuntu Focal) Importance: Undecided Status: New ** Changed in: linux-oem-5.6 (Ubuntu Focal) Assignee: (unassigned) => koba (kobako) ** Changed in: linux-oem-5.6 (Ubuntu Focal) Status: New => In Progress -- 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/1891449 Title: Enable PCI ACS for platform opt Status in linux-oem-5.6 package in Ubuntu: New Status in linux-oem-5.6 source package in Focal: In Progress Bug description: [Impact] Connect with the WD19TB on the right TB port and plug the USB dongle on it, the machine can't recognize the USB dongle. [Fix] Enable the PCI ACS when Intel IOMMU is detected with platform opt in hint. [test] With the fix, the machine can recognize the USB dongle. [Regression Potential] Low. the patch has landed on the mainline kernel. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.6/+bug/1891449/+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