Bug Ubiquity Install Ubuntu 19.10

[Xavier Guillot]

During a fresh install of Ubuntu 19.10 Desktop on a Toshiba Satellite laptop (AMD® E1-1200 apu with radeon(tm) hd graphics × 2), install fails.

Ubuntu 19.04 worked fine, upgrade failed : end Kernel panic, not syncing : VFS Unable to mount root fs on unknown block

A fresh reinstall with partitions formatting on LiveDVD fails, too...

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: ubiquity 19.10.21
ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1
Uname: Linux 5.3.0-18-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu8
Architecture: amd64
CasperVersion: 1.427
Date: Sat Nov 23 22:45:13 2019
InstallCmdLine: file=/cdrom/preseed/ubuntu.seed initrd=/casper/initrd quiet splash --- maybe-ubiquity
LiveMediaBuild: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Xavier Guillot (valeryan-24)]

It is a Toshiba Satellite C850-D - 102

I also got a report of Ubiquity install.py crash

When upgrade from 19.04 failed, at restart I still had access to grub menu and Ubuntu Recovery (message of End Kernel panic). After the fresh reinstall from Live CD failed (I got graphical warning and made this report) I have no more grub :

error : file '/boot/grub/i386-pc/normal.mod' not found
Entering rescue mode...
grub rescue>

There is a windows 7 version installed on the unique SSD (sda), and live CD of Ubuntu 19.10, as well as previously Ubuntu 19.04 in dual boot with W7, worked fine.