the xubuntu 18.10 x86 has the same (or very similar) messages, but they stop far sooner, and xubuntu drops to busybox/initramfs with an error.
I was asked by jsalisbury to do a test; which I think proves the kernel is okay.
From #1795092 bug comment #13 follows
----------------
installed lubuntu 18.04.1 on dell 755 without updates, format of /, but used my old /home (from fedora). rebooted post install, pointed sources to my ISP's ubuntu mirror (bandwidth free updates) & dist-upgrade. I added xubuntu-desktop & some of the apps missing from my modified xfce desktop.
added canonical kernel ppa; changed [ppa] source to point to cosmic; update & install kernel. reboot & login (normally!)
Sorry Walter, I should have updated with info from /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1795092
https:/
the xubuntu 18.10 x86 has the same (or very similar) messages, but they stop far sooner, and xubuntu drops to busybox/initramfs with an error.
I was asked by jsalisbury to do a test; which I think proves the kernel is okay.
From #1795092 bug comment #13 follows
----------------
installed lubuntu 18.04.1 on dell 755 without updates, format of /, but used my old /home (from fedora). rebooted post install, pointed sources to my ISP's ubuntu mirror (bandwidth free updates) & dist-upgrade. I added xubuntu-desktop & some of the apps missing from my modified xfce desktop.
added canonical kernel ppa; changed [ppa] source to point to cosmic; update & install kernel. reboot & login (normally!)
guiverc@755-lubu:~$ screenfetch -n
guiverc@755-lubu
OS: Ubuntu 18.04 bionic
Kernel: x86_64 Linux 4.18.0-8-generic
Uptime: 10m
Packages: 1678
Shell: bash 4.4.19
Resolution: 1680x1050
DE: XFCE
WM: Xfwm4
WM Theme: Agualemon
GTK Theme: Mist [GTK2]
Icon Theme: gnome
Font: Sans 10
CPU: Intel Core2 Duo E6850 @ 2x 2.71GHz
GPU: ATI RV515
RAM: 477MiB / 4824MiB
// in #14 from same bug report I booted xubuntu 18.10 (x86) live on same dell 755; it still has
[ 99.999999] ehci-pci 0000:00: 1a.7:dma_ direct_ map_sg: overflow 0x000000016cbe6 0000+2048 of device mask ffffffff