Comment 6 for bug 1847806

I'm not sure what to think about this failure; what's clear is it's not 'ubiquity', because we're dealing with debian-installer, but I'm not sure what component. In fact, it looks more subtle than this, some sort of more obscure failure:

Oct 11 18:42:06 base-installer: 'Ubuntu-Server 19.10 _Eoan Ermine_ - Beta ppc64el (20191011)'
Oct 11 18:42:06 base-installer: Copying package lists...
Oct 11 18:42:08 base-installer: Illegal instruction
Oct 11 18:42:08 kernel: [ 782.792307] find[10970]: illegal instruction (4) at 77a45c98baa0 nip 77a45c98baa0 lr 77a45c98cf00 code 1 in libc-2.30.so[77a45c930000+210000]
Oct 11 18:42:08 kernel: [ 782.793461] find[10970]: code: fb81ffe0 fba1ffe8 fbc1fff0 fbe1fff8 f821ffa1 7c7d1b78 7c9f2378 812d8f98
Oct 11 18:42:08 kernel: [ 782.793531] find[10970]: code: 7cbc2b78 7cdb3378 75290080 41820344 <fc18048e> 7c1e0066 7bde07a0 2c3ffc02
Oct 11 18:42:08 base-installer: gpgv: Signature made Fri Oct 11 06:47:32 2019 UTC
Oct 11 18:42:08 base-installer:
Oct 11 18:42:08 base-installer: gpgv: using RSA key D94AA3F0EFE21092
Oct 11 18:42:08 base-installer:
Oct 11 18:42:08 base-installer: gpgv: Can't check signature: No public key
Oct 11 18:42:08 base-installer:
Oct 11 18:42:08 base-installer: Sub-process apt-key returned an error code (2)
Oct 11 18:42:08 base-installer: ^MReading Package Indexes... 0%^M
Oct 11 18:42:10 base-installer: ^MReading Package Indexes... Error!^M
Oct 11 18:42:10 base-installer:
Oct 11 18:42:10 base-installer: Writing new source list

There are various instances of 'Illegal instructions' in syslog and errors we really shouldn't be seeing.

What type of CPU configured to virtualize ppc64el? The exact -cpu option in use might be the culprit here.