Further tests showed, that it seems to be related to the Marvell 88SE9230 SATA chip my board is using. Connecting the disk to the second SATA chip available on the board, the OS boots up properly. Sadly this isn't an option for operating the system because those ports are normally used for my storage array.
@romwriter: Can you confirm that your board is using a similar Marvell chipset? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2060709 Title: Kernel 6.8 and Gigabyte F2A88XM-D3H mainboard do not collaborate To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2060709/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs