** Tags added: somerville -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem-5.6 in Ubuntu. https://bugs.launchpad.net/bugs/1902469
Title: drm/i915/dp_mst - System would hang during the boot up. Status in linux package in Ubuntu: Incomplete Status in linux-oem-5.6 package in Ubuntu: New Status in linux source package in Focal: In Progress Status in linux-oem-5.6 source package in Focal: In Progress Status in linux source package in Groovy: In Progress Status in linux-oem-5.6 source package in Groovy: In Progress Bug description: [Impact] The machine connect with the external monitor on dock(Thunderbolt), Then system would hang during the boot-up. [Fix] The atomic check hooks must look up the encoder to be used with a connector from the connector's atomic state, and not assume that it's the connector's current attached encoder. The latter one can change under the atomic check func, or can be unset yet as in the case of MST connectors. [test] With the patch, The machine connect with the external monitor on dock(Thunderbolt), Then system boot up successfully. [Regression Potential] Low. This patch is also verified by others and is archived in the drmtip. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1902469/+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
