Comment 6 for bug 1837726

The fix is in 5.3.0-12.13 but trying current http://ports.ubuntu.com/ubuntu-ports/dists/eoan-proposed/main/installer-ppc64el/current/images/netboot/mini.iso (2019-09-21 81M, 3ed00b52f4335c589f4e1b070107c1af mini.iso)
the kernel of the installer just panics without much details...

Preparing to boot Linux version 5.3.0-12-generic (buildd@bos02-ppc64el-011) (gcc version 9.2.1 20190909 (Ubuntu 9.2.1-8ubuntu1)) #13-Ubuntu SMP Tue Sep 17 12:34:04 UTC 2019 (Ubuntu 5.3.0-12.13-generic 5.3.0)
Detected machine type: 0000000000000101command line: BOOT_IMAGE=/install/vmlinux tasks=standard pkgsel/language-pack-patterns= pkgsel/install-language-support=false --- quiet
Max number of cores passed to firmware: 2048 (NR_CPUS = 2048)
Calling ibm,client-architecture-support... donememory layout at init:
  memory_limit : 0000000000000000 (16 MB aligned)
  alloc_bottom : 0000000007080000 alloc_top : 0000000030000000
  alloc_top_hi : 0000000100000000
  rmo_top : 0000000030000000 ram_top : 0000000100000000
instantiating rtas at 0x000000002fff0000... done
prom_hold_cpus: skipped
copying OF device tree...
Building dt strings...
Building dt structure...
Device tree strings 0x0000000007090000 -> 0x0000000007090a8d
Device tree struct 0x00000000070a0000 -> 0x00000000070b0000
Quiescing Open Firmware ...
Booting Linux via __start() @ 0x0000000002000000 ...
Linux ppc64le
#13-Ubuntu SMP T[ 0.914674] vio vio: uevent: failed to send synthetic uevent
Failed to write 'add' to '/sys/devices/vio/uevent': No such device
[ 0.917725] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100
[ 0.917815] CPU: 0 PID: 1 Comm: init Not tainted 5.3.0-12-generic #13-Ubuntu
[ 0.917885] Call Trace:
[ 0.917913] [c0000000fa4bfc00] [c000000000e72108] dump_stack+0xac/0xf4 (unreliable)
[ 0.917996] [c0000000fa4bfc40] [c000000000126a2c] panic+0x16c/0x400
[ 0.918119] [c0000000fa4bfce0] [c00000000012eb70] do_exit+0xca0/0xd40
[ 0.918206] [c0000000fa4bfdc0] [c00000000012ece0] do_group_exit+0x60/0x120
[ 0.918308] [c0000000fa4bfe00] [c00000000012edc4] sys_exit_group+0x24/0x40
[ 0.918377] [c0000000fa4bfe20] [c00000000000b388] system_call+0x5c/0x70