Problem with Ubuntu 22.04 failing to restart from NVME SSD, needs a power cycle

[Chris Green]

A year or two ago I got a lot of help from this list when I installed
an NVME SSD on my system and, because it wasn't recognised by the BIOS
I had to configure a slightly odd boot sequence to get it to work.

It has been working beautifully through two or three versions of
[x]ubuntu until I recently upgraded from 21.10 to 22.04.

The system runs OK but it can't be restarted, I have to power down and
power up again, then it boots OK.

If I wait for a while after a restart I see:-

    Gave up waiting for suspend/resume device
    Common problems:
       -Boot arge (cat /proc/cmdline)
          - check rootdelay= (did the system wait long enough?)
          - missing modules (cat /proc/modules; ls /dev)

    ALERT: UUID=2d6ff70c-1894-4afa-a35c-5abb40549d3b does not exist.
    Dropping to a shell!


That UUID=2d6ff70c-1894-4afa-a35c-5abb40549d3b is the NVME SSD mounted
on / so it's not surprising it doesn't start!  

I need to work out why the disk 'disappears' on restart but is there
OK when powered up from off.

Any ideas on how to diagnose and fix this problem would be very welcome.


Oh, just in case it's relevant, my /etc/fstab is:-

# /etc/fstab: static file system information.
#
#
#
# /dev/nvme0n1 is the new 1Tb PCiExpress SSD I installed around Dec 2019. Since 
this
# drive can't be seen by the BIOS /boot is a separate partition on the 128Gb 
SATA SSD
# that originally had the OS on it.
#
# <file system>                         <mount point>  <type>  <options>     
<dump>  <pass>
#
#
# / (/dev/nvme0n1p2) root filesystem, just contains OS
#
UUID=2d6ff70c-1894-4afa-a35c-5abb40549d3b       /       ext4  errors=remount-ro 
0       1
#
#
# /boot (/dev/sda1 SATA SSD)
#
UUID=9369df95-29a8-4cbd-adf0-80dfd765f1ba       /boot   ext4    defaults        
0       2
#
#
# swap (/dev/nvme0n1p1)
#
UUID=88e3aeed-1d01-4523-a209-b3b4cc027dc7       none    swap    sw              
0       0
#
#
# /home (/dev/nvme0n1p3)
#
UUID=7e8a314e-7eea-4f43-b8ed-9db025e41cbf       /home   ext4    relatime        
0       2
#
#
# /bak (/dev/sdb1), 1TB hard disk
#
UUID=c1858398-52f4-4d03-b4e7-914fb7098ee8       /bak    ext4    relatime        
0       2
#
#
# /scratch (/dev/sda2) spare space on 128Gb SATA SSD
#
UUID=7b4de2e8-755d-4cb4-a8cb-82c493d5545a    /scratch   ext4    relatime        
0       2

-- 
Chris Green