Comment 167 for bug 1746340

I too am having an SSD corruption issue with Ubuntu 18.04, same exact symptoms. I have a Kingston 480gb SSD, not nvme, connected over SATA. My PC is a desktop, I have attached the output of lspci -vvnn. I have to do manual fsck every 1.5 weeks or so. When I am using my PC, it will freeze up occasionally for about 15 seconds with very high SSD I/O usage - I have attached an iotop log which recorded a freeze at around 18:03:22 (the log records every 1 second, and you will see there is a gap between a recording at 18:03:22 and 18:03:35 which indicates the freeze, followed by 90%+ io. I have included my SSD smart info as well as my current lsblk output below:

=== START OF INFORMATION SECTION ===
Device Model: KINGSTON SA400S37480G
Serial Number: 50026B76825B4FA0
LU WWN Device Id: 5 0026b7 6825b4fa0
Firmware Version: SBFKB1C2
User Capacity: 480,103,981,056 bytes [480 GB]
Sector Size: 512 bytes logical/physical
Rotation Rate: Solid State Device
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: ACS-3 T13/2161-D revision 4
SATA Version is: SATA 3.2, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is: Mon Feb 25 17:57:34 2019 SAST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

lsblk::

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 3.7M 1 loop /snap/gnome-system-monitor/57
loop1 7:1 0 13M 1 loop /snap/gnome-characters/103
loop2 7:2 0 91M 1 loop /snap/core/6350
loop3 7:3 0 3.7M 1 loop /snap/gnome-system-monitor/51
loop4 7:4 0 2.3M 1 loop /snap/gnome-calculator/180
loop5 7:5 0 140.7M 1 loop /snap/gnome-3-26-1604/78
loop6 7:6 0 270.5M 1 loop /snap/pycharm-community/112
loop7 7:7 0 86.9M 1 loop /snap/core/4917
loop8 7:8 0 91M 1 loop /snap/core/6405
loop9 7:9 0 14.5M 1 loop /snap/gnome-logs/45
loop10 7:10 0 140.7M 1 loop /snap/gnome-3-26-1604/74
loop11 7:11 0 13M 1 loop /snap/gnome-characters/139
loop12 7:12 0 14.5M 1 loop /snap/gnome-logs/37
loop13 7:13 0 2.3M 1 loop /snap/gnome-calculator/260
loop14 7:14 0 34.7M 1 loop /snap/gtk-common-themes/319
loop15 7:15 0 34.6M 1 loop /snap/gtk-common-themes/818
loop16 7:16 0 140.9M 1 loop /snap/gnome-3-26-1604/70
loop17 7:17 0 34.8M 1 loop /snap/gtk-common-themes/1122
sda 8:0 0 447.1G 0 disk
└─sda1 8:1 0 447.1G 0 part /