I had Redhat and CentOS fail, Debian crashed.. some other failures. This is the first distro that installed flawelessly

I am so relieved. It's the latest-greatest 19.04.

I assume this is the Gnome Window Manager?

Questions, how do I get it to remember all my xterms when I reboot? I want all apps to come up exactly as I had them when I shutdown.

and how do I enable the LVM? Currently fstab shows this:

# df -k
Filesystem 1K-blocks Used Available Use% Mounted on
udev 12288388 0 12288388 0% /dev
tmpfs 2462728 2028 2460700 1% /run
/dev/mapper/ubuntu--vg-root 958876784 6866148 903232604 1% /
tmpfs 12313620 310076 12003544 3% /dev/shm
tmpfs 5120 4 5116 1% /run/lock
tmpfs 12313620 0 12313620 0% /sys/fs/cgroup
/dev/loop1 4224 4224 0 100% /snap/gnome-calculator/406
/dev/loop2 154752 154752 0 100% /snap/gnome-3-28-1804/31
/dev/loop3 36224 36224 0 100% /snap/gtk-common-themes/1198
/dev/loop0 1024 1024 0 100% /snap/gnome-logs/61
/dev/loop4 15104 15104 0 100% /snap/gnome-characters/254
/dev/loop5 91392 91392 0 100% /snap/core/6673
/dev/loop6 3840 3840 0 100% /snap/gnome-system-monitor/77
/dev/loop7 55040 55040 0 100% /snap/core18/941
/dev/sdb1 523248 7716 515532 2% /boot/efi
tmpfs 2462724 88 2462636 1% /run/user/1000

I think my LVM is enabled, as I can run vgdisplay, etc.

Here are some kernel 5 updates.

https://itsfoss.com/linux-kernel-5/

Here are some of the major new changes in Kernel 5.0:
•AMD Radeon FreeSync support
•Support for a new VegaM
•NVIDIA Xavier display support
•Continued work on Intel Icelake Gen11 graphics
•Initial support for the NXP i.MX8 SoCs
•Support for the Allwinner T3, Qualcomm QCS404, and NXP Layerscape LX2160A
•Intel VT-d Scalable Mode support for Scalable I/O Virtualization
•New Intel Stratix 10 FPGA drivers
•Fixes for F2FS, EXT4 and XFS
•Btrfs file-system restores support for swap files
•Fscrypt Adiantum support for helping with fast data encryption on low-end hardware. This replaces the infamous Speck algorithm by NSA.
•Realtek R8169 driver improvements
•Logitech High Resolution Scrolling support
•Raspberry Pi Touchscreen driver
•x86 laptop drivers improvement
•Thunderbolt security enhancement
•Support for the Chameleon96 Intel FPGA board
•Improved power management


and Gnome 3.32 improvements:


The Ubuntu desktop comes with the GNOME 3.32 interface which should feel faster and more responsive thanks to "numerous performance improvements". A quick test confirmed that it feels snappier indeed.

Other desktop improvements:
◾Sound configuration panel updated which should make "it easier to select your input and output devices".
◾New options during the initial setup to give users more configuration options.
◾Tracker included by default to keep track of recently used files.
◾Alt-Tab shortcut switches windows by default.
◾The order of windows preview in the dock is static in the release. The order is based on the time windows were added.
◾Open-vm-tools will be installed automatically if Ubuntu Desktop is installed in VMWare.
◾Yaru theme has been updated.
◾New Safe Graphics Mode option in Grub.
◾Firefox and LibreOffice updated and installed by default.