With todays daily live and "linux-image-4.8.0-21-generic 4.8.0-21.23"-kernel my G5 boots fine again into the desktop (as long as boot-paramenter radeon.agpmode=-1 is used)!
Will mark this bug as fixed. ** Changed in: linux (Ubuntu) Status: Incomplete => Fix Released -- 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/1626332 Title: Ubuntu MATE 16.10 fails to boot with linux-image-4.8.0-11-generic kernel on PowerMac G5 7,3 Status in linux package in Ubuntu: Fix Released Bug description: Tried to boot todays daily Yakkety iso on my PowerMac G5 7,3 which failed: "Unable to find a medium containing a live file system" (see photo). Same problem also for Lubuntu's daily Yakkety iso. The same iso boots however on my PowerBook G4 5,6 + 5,8. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626332/+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