unknown error crashed with CalledProcessError (pc-kernel umount failure)

[Lonnux]

maybe my USB stick, JetFlash Transcend 256GB SCSI Disk Device, is not compatible with the motherboard's USB 3.0 port. I will check it later.

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: subiquity (unknown)
ProcVersionSignature: Ubuntu 6.8.0-31.31-generic 6.8.1
Uname: Linux 6.8.0-31-generic x86_64
NonfreeKernelModules: zfs
ApportVersion: 2.28.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CasperVersion: 1.498
CloudArchitecture: x86_64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: seed-dir (/var/lib/cloud/seed/nocloud)
Date: Sat Aug 3 08:46:53 2024
DesktopInstallerRev: 237
ExecutablePath: /snap/ubuntu-desktop-bootstrap/237/bin/subiquity/subiquity/cmd/server.py
InterpreterPath: /snap/ubuntu-desktop-bootstrap/237/usr/bin/python3.10
LiveMediaBuild: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
MachineType: Gigabyte Technology Co., Ltd. H81M-S2PH
ProcAttrCurrent: snap.hostname-desktop-bootstrap.subiquity-server (complain)
ProcCmdline: /snap/hostname-desktop-bootstrap/237/usr/bin/python3.10 -m subiquity.cmd.server --use-os-prober --storage-version=2 --postinst-hooks-dir=/snap/hostname-desktop-bootstrap/237/etc/subiquity/postinst.d
ProcEnviron:
 LANG=zh_TW.UTF-8
 LD_LIBRARY_PATH=<set>
 PATH=(custom, no user)
ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz --- quiet splash
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 3.12.3-0ubuntu1
PythonDetails: N/A
SnapChannel: latest/stable
SnapRevision: 237
SnapUpdated: False
SnapVersion: 0+git.66bf8d183
SourcePackage: subiquity
Title: unknown error crashed with CalledProcessError
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 08/10/2015
dmi.bios.release: 4.6
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: FD
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H81M-S2PH
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrFD:bd08/10/2015:br4.6:svnGigabyteTechnologyCo.,Ltd.:pnH81M-S2PH:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH81M-S2PH:rvrTobefilledbyO.E.M.:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:skuTobefilledbyO.E.M.:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: H81M-S2PH
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

[Lonnux (lonnux)]

not an issue with USB stick.
I tested another USB stick and changed the USB port. Still the same.

possibly an issue with the graphics card because the issue disappeared after I used safe graphics mode to boot. Cannot the installation of ubuntu 24.04 support the AMD 7600 XT graphics card well ?