Lenovo IdeaPad S340-15IIL IceLake with OpenCore
Part Number : 81VW00C4GE
- Last working Bios version is currently cucn28ww_72ww
| In work with a multi boot Oparating System | ° | ° | ° | ° |
|---|---|---|---|---|
| Windows | Windows 10 Pro | Windows 11 Pro | ||
| Linux | Ubuntu 21.10 | |||
| MacOS | Catalina | Big Sur | Monterey | Ventura |
| ChromeOS | ChromeOS "Volteer" |
*TPM 2.0 chip is enabled for Windows 11, does not affect MacOS versions.
SecureBoot is disabled but can be enabled and rolled out for OpenCore drivers if needed.
The specs of the machine are:
| Specifications | Details |
|---|---|
| Processor | Intel Core i7-1065G7 (4C / 8T, 1.3 / 3.9GHz, 8MB) |
| RAM | 4GB Soldered DDR4-2666 + 8GB SO-DIMM DDR4-2666 (Total 12GB) |
| Storage | 512GB SSD M.2 2280 PCIe 3.0 x4 NVMe |
| Storage | 256Gb SSD Sata3 (second added by me) |
| Graphics | Integrated Intel Iris Plus Graphics G7 |
| Monitor | 15.6" FHD (1920x1080) IPS 250 nits Anti-glare |
| Sound Card | Smart Sound Technology Audio (ALC 257 layout-ID 11 (0B000000)) |
| Card reader | Working |
| Network Card | BCM94360NG |
| TouchPad | Fully Fuctional |
There are still a few small blemishes that I haven't been able to solve yet. see Issues.
To activate the Debug Bios;
Enter BIOS → disable OneKeyBattery → save and exit. Poweroff the laptop. Power button to turn on → F2 to enter the normal BIOS → Power button to turn off → then press, moving fast, the following keys in sequence
F1 → 1 → Q → A → Z
F2 → 2 → W → S → X
F3 → 3 → E → D → C
F4 → 4 → R → F → V
F5 → 5 → T → G → B
F6 → 6 → Y → H → N
Turn on the power button → F2 enters the hidden Debug BIOS.
Then go to;
Advanced → Power & Performance → CPU-Power Management Control → CPU Lock Configuration → CFG Lock → Disabled
Then go to;
Advanced → System Agent (SA) Configuration → Graphic Configuration → DVMT Pre-Allocated Selection → DVMT Pre-Allocated → Set to 160MB
save and exit.
There is a lot of customizable in the Debug Bios, just change the two points CPU-Lock & Graphic DVMT !!!!
With other points you break the system.
ChromeOS
Windows 10 & 11 Pro
MacOS Catalina, BigSur & Monterey
