Lost display after flash new image

After using “flash-all.sh” to flash (including boot.img, super.img, userdata.img, fastboot reboot), adb devices came up fine, however, HDMI screen went black. Tried to flash the previous working image, could not bring back display.

fastboot oem select-display-panel hdmi
fastboot reboot bootload
→ can bring back “FastBoot Mode” display

However, after “fastboot reboot” → the screen becomes black again, even though “adb devices” is fine.

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