After restore OS to factory state and directly update to latest kernel with "apt install linux-oem", it will not hang. It seems not the kernel issue. May upgrade certain package that cause the issue.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-oem in Ubuntu. https://bugs.launchpad.net/bugs/1880663 Title: Dell Latitude 7300 sometimes stuck at purple screen after grub and fails to boot up Status in OEM Priority Project: New Status in grub2 package in Ubuntu: Incomplete Status in linux-oem package in Ubuntu: New Status in grub2 source package in Bionic: Incomplete Bug description: With linux-4.15.0-1081 kernel, it usually stuck at purple screen after grub. There is no any log in journal when it fails to boot up, and earlyprintk shows nothing on the screen, either. System Information Manufacturer: Dell Inc. Product Name: Latitude 7300 Version: Not Specified Serial Number: J83ZST2 UUID: 4C4C4544-0038-3310-805A-CAC04F535432 Wake-up Type: Power Switch SKU Number: 08E0 Family: Latitude BIOS Information Vendor: Dell Inc. Version: 1.6.1 Release Date: 11/14/2019 Address: 0xF0000 Runtime Size: 64 kB ROM Size: 24 MB Characteristics: PCI is supported PNP is supported BIOS is upgradeable BIOS shadowing is allowed Boot from CD is supported Selectable boot is supported EDD is supported Japanese floppy for NEC 9800 1.2 MB is supported (int 13h) 5.25"/1.2 MB floppy services are supported (int 13h) 3.5"/720 kB floppy services are supported (int 13h) 3.5"/2.88 MB floppy services are supported (int 13h) Print screen service is supported (int 5h) 8042 keyboard services are supported (int 9h) Serial services are supported (int 14h) Printer services are supported (int 17h) ACPI is supported USB legacy is supported Smart battery is supported BIOS boot specification is supported Function key-initiated network boot is supported Targeted content distribution is supported UEFI is supported BIOS Revision: 1.6 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1880663/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
