** Tags added: patch -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-6.1 in Ubuntu. https://bugs.launchpad.net/bugs/2025195
Title: HDMI output with More than one child device for port B in VBT error Status in HWE Next: New Status in linux package in Ubuntu: In Progress Status in linux-oem-6.1 package in Ubuntu: Invalid Status in linux source package in Jammy: Won't Fix Status in linux-oem-6.1 source package in Jammy: In Progress Status in linux source package in Mantic: In Progress Status in linux-oem-6.1 source package in Mantic: Invalid Bug description: [Impact] The HDMI monitor doesn't work, no events while plug/unplug then cable. [Fix] From the bug report[1], skip the return workaround the issue, so I created the DMI quirk to list affected platforms. Intel is submitting patches[2][3] to fix the issue, but it requires to backport huge drm structure changes, too. As there is no regression found with this workaround, it's safer to use the DMI quirk to handle this issue, and wait Intel's fix[2][3] to be available in v6.5 kernel. 1. https://gitlab.freedesktop.org/drm/intel/-/issues/7709 2. https://patchwork.freedesktop.org/series/117641/ 3. https://patchwork.freedesktop.org/series/114200/ [Test] Verified by me, FE, and ODM. [Where problems could occur] I have no idea what might happen, so only make the workaround avaiable on the listed platforms. So far, no regressions have been observed with plug/unplug, switch modes, reboot, and suspend tests. To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/2025195/+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
