Dear All,

I hope everyone is well! I have a machine with Windows and Ubuntu 18.4 installed on two different SSD's which works fine using Grub. Now, for running a specific program I needed to install 16.04 on again a separate Volume. After a successful installation and updating Grub, however I cannot access the GUI of Ubuntu 18.4 anymore. It enters the Emergency mode right away and I can only access the kernel.
On booting 18.4 I receive Errors before entering Emergency Mode

HTML Code:
[0.147899] ACPI Error: [SDSO] Namespace lookup failure, AE_NOT_FOUND (20170831/psargs-364)
and

HTML Code:
[0.147976] ACPI Error: [SDSO] Method parse/execution failed \SHAD._STA, AE_NOT_FOUND (20170831/parse-550)
I updated the BIOS on my motherboard resulting in the same outcome.
After removing the SSD with 16.04 installed, and updating grub, 18.4 boots normally.

Any help would be appreciated,
Thank you