[Bug 1950996] Re: Missing all modules for usb nics in initrd which makes PXE boot impossible

[Launchpad Bug Tracker]

This bug was fixed in the package initramfs-tools - 0.140ubuntu12

---------------
initramfs-tools (0.140ubuntu12) jammy; urgency=medium

  * Force copy pthread and libgcc_s libraries via a stub binary.

    To avoid circular shared library dependencies between compiler and
    libc, libpthreads chooses to dlopen libgcc_s, instead of linking
    against it. However, we have no way to parse/know what it
    needs. And even when we hardcode to include libgcc_s1, we don't
    have a way to know which libgcc_s1 is needed on a given system and
    from which path to include it. But there is a hook-function to
    copy a binary and all of its shared library dependencies. Thus
    create a stub empty executable, with shared linking against
    pthreads and gcc_s1 and always include it in the initrd. This way
    at initrd creation time, ldd is used to correctly resolve these
    shared library dependencies and correctly copy them into the
    initrd. This removes hardcoding paths as to where these libraries
    must be copied from on the host. LP: #1958594 LP: #1880853

  * For net boot include most of net/usb modules, except niche modems. LP:
    #1950996

  * Cherry-pick updated merge request !26 to support xz compressed
    firmware. Uncompressed firmware is preffered, with a fallback to use
    compressed firmware files. LP: #1942260

  * Cherry-pick updated merge request !51 to decompress compressed kernel
    modules for boot speed performance. LP: #1932329

 -- Dimitri John Ledkov <dimitri.ledkov at canonical.com>  Tue, 08 Feb 2022
20:43:02 +0000

** Changed in: initramfs-tools (Ubuntu Jammy)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1950996

Title:
  Missing all modules for usb nics in initrd which makes PXE boot
  impossible

Status in initramfs-tools package in Ubuntu:
  Fix Released
Status in initramfs-tools source package in Focal:
  Confirmed
Status in initramfs-tools source package in Hirsute:
  Confirmed
Status in initramfs-tools source package in Impish:
  Confirmed
Status in initramfs-tools source package in Jammy:
  Fix Released

Bug description:
  initrd taken from the live iso for PXE boot does not contain USB NIC
  drivers which makes PXE installation/netboot impossible via usb.

  This is the case on 20.04 server iso (both hwe and normal
  kernel/initrd) and desktop iso.

  "kernel/drivers/net/usb" is empty and needs to be included in the
  initramfs build.

  As most modern thin laptops lack physical rj45 ethernet this is a big
  issue.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: initramfs-tools 0.136ubuntu6.6
  ProcVersionSignature: Ubuntu 5.8.0-64.72-generic 5.8.18
  Uname: Linux 5.8.0-64-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.21
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Mon Nov 15 16:47:45 2021
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: Upgraded to focal on 2020-05-11 (552 days ago)

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