Cutting edge file system failed.

[Devan Reimer]

    The experimental file system package failed to initialize.

ProblemType: Bug
DistroRelease: Ubuntu Kylin 20.04
Package: ubiquity 20.04.15 [origin: Ubuntu]
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckMismatches: ./isolinux/isolinux.bin
CasperMD5CheckResult: fail
CasperVersion: 1.445
Date: Sun May 24 23:48:18 2020
InstallCmdLine: locale=zh_CN keyboard-configuration/layoutcode?=cn file=/cdrom/preseed/ubuntu.seed only-ubiquity initrd=/casper/initrd quiet splash nomodeset --- locale=zh_CN keyboard-configuration/layoutcode?=cn
LiveMediaBuild: Ubuntu-Kylin 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 LANGUAGE=en_CA.UTF-8
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_CA.UTF-8
 LC_NUMERIC=C.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

[Mark Morlino (markmorlino)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Paul White (paulw2u)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. We are sorry that we do not always have the capacity to look at all reported bugs in a timely manner.

From the bug description:

CasperMD5CheckMismatches: ./isolinux/isolinux.bin
CasperMD5CheckResult: fail

It's possible you had a bad write to your installation media or for some other reason its contents could not be read correctly. I'm closing this as invalid due to the time that has elapsed since you raised the problem. Sorry again for the delay.