Your test kernel with commit 2dc0b46b5ea3 does indeed fix the issue with the WD HDD. Here's the dmesg with your test kernel: https://paste.ubuntu.com/p/745NscYFJh/
As you can see at the top i was using: "[ 0.000000] Linux version 4.15.0-29-generic (root@kathleen) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #32~lp1783906Commit2dc0b46b5ea3Reverted SMP Mon Jul 30 14:47:35 (Ubuntu 4.15.0-29.32~lp1783906Commit2dc0b46b5ea3Reverted- generic 4.15.18)" And at the end you can see the WD HDD working: "[ 57.091948] ata6.00: ATA-8: WDC WD5003AZEX-00K1GA0, 80.00A80, max UDMA/133" This however did not fix the freeze when rebooting, that bug seems also to be introduced in linux 4.15 but i'll have to do more test about that one and report it as a separate bug. Any ideas on how to get information, dmesg, logs, after the computer freeze before rebooting would be helpful. As i have absolutely no idea what causes that freeze. Only thing i know is that it also doesn't happen on linux 4.14 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783906 Title: Linux 4.15 and onwards fails to initialize some hard drives To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
