[Bug 1900773] Re: thunderx CRB systems tftp timeout downloading initrd

[Taihsiang Ho]

I tried 20201021 Groovy daily live with Hisilicon d05 via PXE, and I did
NOT reproduce this issue.


[Post-installation Information]

ubuntu at d05-4-20-10-rc-102021-pxe-tai-1:~$ cat /var/log/installer/media-info ; echo ; uname -a; lsb_release -a
Ubuntu-Server 20.10 "Groovy Gorilla" - Release arm64 (20201021)
Linux d05-4-20-10-rc-102021-pxe-tai-1 5.8.0-25-generic #26-Ubuntu SMP Thu Oct 15 10:33:30 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.10
Release:        20.10
Codename:       groovy

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https://bugs.launchpad.net/bugs/1900773

Title:
  thunderx CRB systems tftp timeout downloading initrd

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  groovy-live-server-arm64.iso 20201020.1

  When attempting to netboot subiquity on a Cavium ThunderX CRB2S, the
  system always times out downloading the initrd - see below. It seems
  the initrd, which is LZ4 compressed to 87M, is just too large. If I
  recompress the initrd using lzma - shrinking it to 44M, I am able to
  boot it. While that successfully works around the issue, I wouldn't
  expect the average user to know to do it.

                           GNU GRUB  version 2.04

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        Use the  and  keys to select which entry is highlighted.          
        Press enter to boot the selected OS, `e' to edit the commands       
        before booting or `c' for a command-line.                           

  error: timeout reading `initrd'.

  Press any key to continue...

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