[Bug 1880663] Re: Dell Latitude 7300 sometimes stuck at purple screen after grub and fails to boot up

[You-Sheng Yang]

sig=0x806eb, revision=0xc6 was released in 20191112, and revision=0xd6
is in 20200609 release. There was also an rev 0x00ca on 20191115.

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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 intel-microcode package in Ubuntu:
  New
Status in intel-microcode source package in Bionic:
  New
Status in intel-microcode source package in Focal:
  New

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

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