[Google Pixel 2 XL ROMs, Kernels, Recoveries, & Oth] daedae1112:
My phone is Pixel 2 with stock android 10, latest(june) google security update. Full wipe was not executed.

My phone also hanged on colored Google logo(not even going to combining G animation).

I can't access to adb but it still connected to fastboot.

long press power button and it goes to normal boot

no log files created in /sys/log/fs/pstore right after trying to boot twrp.

I found a command 'fastboot oem dmesg'. and thought it may help you.

(bootloader) UEFI Start [ 1663] SEC

(bootloader) PROD Mode : On

(bootloader) DEBUG Mode : On

(bootloader) ASLR : On

(bootloader) Timer Delta : +8 mS

(bootloader) RAM Entry 0 : Base 0x0000000080000000 Size 0x00000000FE4C

(bootloader) 0000

(bootloader) UEFI Ver : 4.2.200327.BOOT.XF.1.2.2.c1-00051-M8998LZB-2

(bootloader) Build Info : 64b Mar 27 2020 14:05:52

(bootloader) Boot Device : UFS

(bootloader) ufs_ffu: SKhynix H28U88301AMR D003

(bootloader) match vendor:SKhynix, product id:H28U88301AMR

(bootloader) FFU is successful to D003

(bootloader) ffu success

(bootloader) PID=0x1BC

(bootloader) PCBID=0x80

(bootloader) PCBID2=0x4

(bootloader) BOMID=0x3

(bootloader) DisplayDxe: Panel_CDP_PowerUp!

(bootloader) DisplayDxe: ID Pin:0

(bootloader) Display SelectedPanel:26

(bootloader) DisplayDxe: Resolution 1080x1920 (1 intf)

(bootloader) DisplayDxe: Panel_CDP_Reset!

(bootloader) set dsi_Backlight_Value: 98

(bootloader) LoadSecureApps: Load app from partition(keymaster): Status

(bootloader) = 0x0, AppId = 65537

(bootloader) Trusty qsee load failed: 1

(bootloader) LoadSecureApps: Load app from partition(lockbooter): Statu

(bootloader) s = 0x0, AppId = 131074

(bootloader) ESEProtocolInit is called

(bootloader) ESEProtocolInit done

(bootloader) -----------------------------

(bootloader) Platform Init [ 2362] BDS

(bootloader) UEFI Ver : 4.2.200327.BOOT.XF.1.2.2.c1-00051-M8998LZB-2

(bootloader) Platform : MTP

(bootloader) Chip Name : MSM8998

(bootloader) Chip Ver : 2.1

(bootloader) Core 0 Freq: 1555 MHz

(bootloader) -----------------------------

(bootloader) PmicDxe:: PmicFgSram_ReadBattID: BATT_ID_2 = 23134

(bootloader) PmicDxe:: PmicFgSram_ReadBattID: BATT_ID_2 = 23134

(bootloader) UEFI Total : 722 ms

(bootloader) POST Time [ 2385] OS Loader

(bootloader) Successfully erase ramdump partition

(bootloader) Loader Build Info: Sep 16 2019 11:15:21

(bootloader) ddr_vendor is Samsung(0x1)

(bootloader) First RTC time: 1980-09-04, 17:38:21

(bootloader) Bypass RESET_DEVINFO

(bootloader) VB: RWDeviceState: Succeed using rpmb!

(bootloader) ActiveSlot: _a

(bootloader) Write Permission: 0x3FF9FC3C

(bootloader) QseecomStartApp lockbooter call success status=0, AppId=13

(bootloader) 1074

(bootloader) LockBooterGetFlag:ID = 21 Status = 0

(bootloader) OemLockMessageHandler: provisioning is disabled

(bootloader) Need shut down?

(bootloader) BootReason 0x0

(bootloader) ConfigDefaultReason: no need to change Bootreason: 0

(bootloader) Recovery command: 32 bootonce-bootloader

(bootloader) Launching fastboot

(bootloader) Fastboot Build Info: Sep 16 2019 11:15:19

(bootloader) Fastboot: Initializing...

(bootloader) ActiveSlot: _a

(bootloader) Unlock value = 1

(bootloader) Fastboot: Processing commands

(bootloader) ddr_vendor is Samsung(0x1)

here, i command fastboot boot twrp-3.4.0-0-test1-walleye.img

(bootloader) Handling Cmd: download:02000000

(bootloader) Download Finished

(bootloader) Handling Cmd: boot

(bootloader) Enter FTM mode or "fastboot boot" or offmode-charging, ski

(bootloader) p active slot bootable validation...

(bootloader) avb_slot_verify.c:432: DEBUG: Loading vbmeta struct from p

(bootloader) artition 'vbmeta_a'.

(bootloader) avb_slot_verify.c:188: DEBUG: dtbo_a: Loading entire parti

(bootloader) tion.

(bootloader) vbmeta Path - /dev/sda18

(bootloader) State: Unlocked, AvbSlotVerify returned OK, continue boot

(bootloader) VB2: Authenticate complete! boot state is: orange

(bootloader) avb_err = 0x0(0)

(bootloader) avb_slot_verify.c:1596: DEBUG: AVB record loaded sucessful

(bootloader) ly!

(bootloader) avb_slot_verify.c:1598: DEBUG: padding1: current retry cou

(bootloader) nt is 0.

(bootloader) avb_slot_verify.c:1600: DEBUG: padding1: previous retry co

(bootloader) unt is 0.

(bootloader) avb_slot_verify.c:1645: DEBUG: No AVB error this time!

(bootloader) VB2: boot state: orange(1)

(bootloader) Exit key detection timer

(bootloader) No Ffbm cookie found, ignore: Not Found

(bootloader) Memory Base Address: 0x80000000

(bootloader) Decompressing kernel image start: 18479 ms

(bootloader) Decompressing kernel image done: 20581 ms

(bootloader) Device tree exact match the board: <0x124 0x20001> == <0x1

(bootloader) 24 0x20001>

(bootloader) DTB offset is incorrect, kernel image does not have append

(bootloader) ed DTB

(bootloader) WARNING: DeviceTreeAppended returned fail; fallback to Soc

(bootloader) DeviceTreeAppended

(bootloader) Device tree exact match the board: <0x124 0x20001> == <0x1

(bootloader) 24 0x20001>

(bootloader) Memory Base Address: 0x80000000

(bootloader) Overlaying SOC & DEV dtb start: 20588 ms

(bootloader) Overlaying SOC & DEV dtb done: 20735 ms

(bootloader) Note: libufdt heap usage: 1200312 bytes

(bootloader) get_wifi_country_code: 0x0

(bootloader) GetBoardFpId: value1(1) fp_id(1)

(bootloader) GetBoardFpId: eFpIdRet:0 fp_id:1

(bootloader) PON Reason is 33 cold_boot:1 charger path: 1

(bootloader) Get Cert FingerPrint: Cannot find User Key, try to read OE

(bootloader) M key.

(bootloader) Get Cert FingerPrint: 0x0644FCE7

(bootloader) ddr_vendor is Samsung(0x1)

(bootloader) IsRebootByKey 0

(bootloader) IsRebootByKey 0

(bootloader) OEM SecureBoot: 0x00303030

(bootloader) HW Security has been enabled !

(bootloader) It's production key device

(bootloader) CmdLine : Write 2075(4096)

(bootloader) Cmdline: androidboot.hardware=walleye androidboot.console=

(bootloader) ttyMSM0 lpm_levels.sleep_disabled=1 user_debug=31 msm_rtb.

(bootloader) filter=0x37 ehci-hcd.park=3 service_locator.enable=1 swiot

(bootloader) lb=2048 firmware_class.path=/vendor/firmware loop.max_part

(bootloader) =7 raid=noautodetect us

(bootloader) Error: Ramdisk size is over the limit

(bootloader) Handling Cmd: oem dmesg

(bootloader) DEBUG: 00001017 00000000 0007FFE8 A1300018

I'm just an end user, not a developer. sorry;;