Issue #538 has been updated by Brian L.
Nico Huber wrote in #note-12:
One very important thing: Do you remember the exact coreboot version / config that you used when it broke?
Many of my ealier thoughts were based on the assumption that it was stock HEADS and that libgfxinit worked before with your panel. But maybe it didn't?
Libfgxinit worked fine for years with multiple flavors and payloads. It was only after using a dock that it suddenly broke. I dont recall the exact coreboot revision that i used when it broke, unfortunately, but it was Heads with a stock Head's coreboot config. (only customizations were unrelated to graphics, and it was in the payload linuxboot side of the configuration)
---------------------------------------- Bug #538: [Soft Brick] x230 Dock Causes Internal Display to "Permanently" Malfunction https://ticket.coreboot.org/issues/538#change-1845
* Author: Brian L * Status: New * Priority: High * Target version: none * Start date: 2024-05-14 * Affected hardware: Lenovo x230 ---------------------------------------- Environment: - Lenovo x230 - Stock screen replaced with Pixel Qi (not sure if relevant) (plug & play LVDS) - Coreboot using Heads (coreboot + linuxboot) - Official lenovo docking station connected to external monitor via DisplayPort
Bug Trigger: Using Heads/coreboot fine for years with my Pixel Qi screen modded x230. I then bought a Lenovo docking station. Booted up, everything worked fine. Disconnected from dock, booted up, and there was no bios screen. Screen did not turn on until taken over by Linux Kernel. Once in userspace, wayland could no longer identify the monitor as a Pixel Qi or its proper resolution. EDID is blank. Booting with docking station allows bios to show on external display.
Restarting did *not* fix the issue, reflashing heads did *not* fix the issue, flashing skulls (coreboot + seabios) did *not* fix the issue.
Flashing stock bios *did fix* the issue. I can now see BIOS screen and get proper EDID in userspace whether on the dock or not. *However* reflashing coreboot again, even coming from stock bios working state, and I immediately now no longer get a BIOS screen or EDID, even without ever introducing the dock again. Essentially now bricked with anything but stock bios.