[Bug 2084191] Re: [X1E] Request: Add support for Lenovo Yoga Slim 7x

[Carlo Lazzerini]

@Tobias

Here are some metrics for you on the battery life situation. At least
the best I could do without being able to consistently install across
all test media.  All testing below is for idle battery life with as
little load as possible. The laptop was charged to between 95 and 100
percent before each test run.

Testing Process:
- boot live environment
- select language, enable wifi, and try Ubuntu
- put display at 50% brightness
- launch battery settings to view battery estimate
- wait about 3-5 minutes for maximum battery estimate to settle
- compute 100% battery life estimate using (battery estimate / current battery percent)*100

Data Collected:
9.88 hours questing latest concept iso build 3/14
9.97 hours resolute latest concept iso build 3/26
6.22 hours resolute beta iso 3/26
6.41 hours resolute daily iso build 4/10
6.35 hours resolute daily iso build 4/15

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https://bugs.launchpad.net/bugs/2084191

Title:
   [X1E] Request: Add support for Lenovo Yoga Slim 7x

Status in ubuntu-concept:
  Confirmed

Bug description:
  Add support for the Snapdragon X Elite powered Lenovo Yoga Slim 7x

  === Device Information ===

  Manufacturer: LENOVO
  Product Name: 83ED
  Version: Yoga Slim 714Q8X9

  === Kernel + DTB ===

  Live environment and installation work.

  === Known Issues ===

  1) Unable to boot with secure boot enabled
  Workaround: Disable secure boot using FN+F2 during device boot

  2) Blank screen on installer boot up
  Workaround: Restart manually with power button. May take up to 2 reboots to resolve.

  3) Initial GNOME installer window broken/flickering
  Workaround: set display scale to 100% (settings->displays)

  4) Install along side Windows fails on Bitlocker enabled error
  Workaround: Reboot and install with manual partitioning

  5) Keyboard not functioning in Grub boot menu post installation
  Fix: See possible and unverified fix in comment from Carlo Lazzerini dated 2024-10-21
  Workaround: Wait for the time to run out and the default (Ubuntu) item will execute. Use FN+F12 to pick between Windows/Ubuntu using BIOS boot menu

  6) Video card functioning slowly and battery indicator not working
  Fix: install firmware with qcom-firmware-extract manually

  7) Firmware install failing with Bitlocker encrypted Windows volumn
  Workaround: Manually mount Windows volume with GNOME Files app

  7) Bluetooth not functioning
  Fix: None

  8) Sound not functioning
  Fix: None for laptop
  Workaround) Attach an external audio device (eg. usb headphones)

  9) External display not detected
  Fix: None

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