tilator

Deleting qcadsp8280.mbn makes it boot again. Other files are allowed. Attached is dmesg after this modification. [dmesg_2.txt](https://github.com/linux-surface/surface-pro-x/files/14480972/dmesg_2.txt)

Here is some addition to the dmesg: ``` [ 407.185520] r8152-cfgselector 5-1: USB disconnect, device number 2 [ 407.216411] firmware_class:__free_fw_priv: firmware_class: __free_fw_priv: fw-rtl_nic/rtl8153a-3.fw fw_priv=000000006b97e10a data=00000000803d95d2 size=1440 [ 407.240122] firmware_class:fw_name_devm_release: firmware_class:...

> how about setting up a separate dts file like `sc8280xp-microsoft-arcata.dts` ? There will be some differences I'm sure, DP use for example and WWAN. Maybe a good idea to...

> Do you get a screen with the USB-C video adapter? Not impossible. Nothing come up. I tried cold booting and connecting adapter while it was already up.

> For debugging dp operation, please add `drm.debug=0x100` to your boot command line. This is grub parameter, I suppose.

How about this qcadsp8280.mbn preventing it booting up. Might it be just some kind of loading order issue?

Here is dmesg with grub debug option as you wished. [dmesg_3.txt](https://github.com/linux-surface/surface-pro-x/files/14482013/dmesg_3.txt)

> Need to look into the dmesg. The fun part is, after copying the firmwares theay are also integrated into the initrd :grin So they will be loaded, but they...

> The latest .dtb should get external display working with the bottom USB-C port, if you provide the .dtb file at boot with a devicetree line and with the right...

> would still be interesting what's in here There is all except the one I removed: root@ubuntu: ls /usr/lib/firmware/qcom/sc8280xp/MICROSOFT/DEVKIT23/ -la total 5520 drwxr-xr-x 2 root root 4096 Mar 4 11:41...