[Bug 2114876] Re: Add support for Lenovo Ideapad Slim 3

[dyn]

Here are my findings from a sleepless night of troubleshooting:

First, on GRUB, everything seems to work, except the initial `error:
file /boot/ not found` that everyone seems to get.

The reason Linux doesn't want to boot is because the "Device Tree" is
missing. I figured I'd try using a related one and tweaking it to see if
I could get some results.

Searching in the linux kernel's sources
(https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/qcom),
I set my eyes on `x1p42100-lenovo-thinkbook-16.dts` and `x1p42100-asus-
zenbook-a14.dts`.

The first one seemed promising since it's also by Lenovo, and it does
have a bit more luck in booting: I get a small flash of log, but I get
reset back to the UEFI boot sequence right after.

The second, the Asus Zenbook A14, managed to boot completely into a
desktop environment! Most of the peripherals and connectors are
completely unusable (keyboard, trackpad, battery tracking, network
card), but at least it's a display.

I've compiled my findings and scripts in a Git repository: https://codeberg.org/dyn/15Q8X10
It also contains ACPI blobs/decompiled dumps, as well as a HWiNFO Report (https://codeberg.org/dyn/15Q8X10/src/branch/main/hwinfo.txt) which seems very verbose and should help developers.

Best of luck to any passing developer. Unfortunately for me I'll be
returning this laptop since I do need a daily-driver, and a machine
running Windows is a dealbreaker.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to ubuntu-concept.
https://bugs.launchpad.net/bugs/2114876

Title:
  Add support for Lenovo Ideapad Slim 3

Status in ubuntu-concept:
  New

Bug description:
  Hardware: Lenovo Ideapad Slim 3 15Q8X10
  MO: PF9XB5416161
  MTM: 83N30009US
  Factory ID (Never know what you might need...): JVHFC1
  Module: QCNCM865
  Processor: Qualcomm Snapdragon MSM8260A
  RAM: 16gb (LPDDR5)
  SSD: Micron (2230)

  ISO Tested:  oracular-desktop-arm64+x1e
  Secure Boot: Disabled
  Boot Order: USB-preferred

  Initial boot met with conflict due to secure boot, though disabled,
  the UEFI had set it to 'Setup', rather than 'Disabled'.  This was
  corrected with resetting factory keys, and then re-disabling Secure
  Boot.

  Second boot proceeded to GRUB, noting that my device was not yet
  supported.  A button was pushed, to proceed, but the screen hung
  there.  After consulting another Lenovo ticket, and noting similar
  issues, I attempted the fixes, and workarounds, but was not able to
  proceed past the hung screen, with the cursor in the top-left.
  Nothing further.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-concept/+bug/2114876/+subscriptions