I don't know why 20.2.6 build is not available there, but the current backport is, and it's not due to the package anyway but something else
** Changed in: mesa (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1924757 Title: Ubuntu debug mirror is out of sync Status in mesa package in Ubuntu: Fix Released Bug description: lsb_release -rd Description: Ubuntu 20.04.2 LTS Release: 20.04 When using the Ubuntu debug mirror (ddebs.ubuntu.com) and the official mirror (archive.ubuntu.com), it is not possible to install some debug symbols. For example: apt install mesa-vulkan-drivers-dbgsym Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: mesa-vulkan-drivers-dbgsym : Depends: mesa-vulkan-drivers (= 20.0.4-2ubuntu1) but 20.2.6-0ubuntu0.20.04.1 is to be installed E: Unable to correct problems, you have held broken packages. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1924757/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp