[Bug 1833728] Re: Failed install of Ubuntu Mate 18.04 for Pocket GPD

[Igor Lopez]

I just checked the USB Installer (Created using the "Create Startup Disk") and for some reason did the following files not match the md5sums specified in the md5sum.txt file:
######## FAILED md5sum ########
/media/igor/Ubuntu-MATE 18.04.2 gpd-pocket/isolinux/boot.cat
Expected: 72acd44f7e3fed1255a120b1e053f2c8
Actual  : 0563a286d4437d87a43bbcb1a1a9de5e
---------------------------------------------------------------
######## FAILED md5sum ########
/media/igor/Ubuntu-MATE 18.04.2 gpd-pocket/isolinux/isolinux.bin
Expected: e6ac582d1fce36959688edc086c190b3
Actual  : 867552f76d9d0527f85ccbb2f7b450a7
---------------------------------------------------------------
######## FAILED md5sum ########
/media/igor/Ubuntu-MATE 18.04.2 gpd-pocket/boot/grub/efi.img
Expected: 455a6a2009efdbc3b479aa201e857b62
Actual  : 1b5bf937583468d3980ebfc05da9ba98
---------------------------------------------------------------
######## FAILED md5sum ########
/media/igor/Ubuntu-MATE 18.04.2 gpd-pocket/md5sum.txt
Expected: edbe5c1a8f7241cc5897b8928902510a
Actual  : 11f8a9f4fcb598e0e3508dc43d4963e6
---------------------------------------------------------------
######## FAILED md5sum ########
/media/igor/Ubuntu-MATE 18.04.2 gpd-pocket/casper/filesystem.squashfs
Expected: 80b07d11c7c729d7756272bd0d2c2773
Actual  : e68e5f1ae08c6143cb0368be29029b5d
---------------------------------------------------------------

And the attached syslog contains very many lines with:
... ubuntu-mate kernel: [   65.581224] SQUASHFS error: zlib decompression failed, data probably corrupt
... ubuntu-mate kernel: [   65.581236] SQUASHFS error: squashfs_read_data failed to read block 0x67b3cbf8     <-- many lines
... ubuntu-mate kernel: [ 1104.711788] SQUASHFS error: squashfs_read_data failed to read block 0x7eb9350      <-- two lines

The downloaded ISO was verified against its checksum.

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https://bugs.launchpad.net/bugs/1833728

Title:
  Failed install of Ubuntu Mate 18.04 for mini laptop GPD Pocket

Status in ubiquity package in Ubuntu:
  New

Bug description:
  The installer failed and reported problem when installing to disc.
  Affected system is a GPD Pocket with Ubuntu 16.04 installed.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: ubiquity 18.04.14.12 [modified: lib/partman/automatically_partition/question]
  ProcVersionSignature: Ubuntu 4.18.0-15.16~18.04.1-generic 4.18.20
  Uname: Linux 4.18.0-15-generic x86_64
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  CasperVersion: 1.394
  Date: Fri Jun 21 16:44:42 2019
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu-mate.seed boot=casper only-ubiquity video=efifb fbcon=rotate:1 quiet splash ---
  LiveMediaBuild: Ubuntu-MATE 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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