![]() To confirm which GPU you're currently using when hooking up an external monitor, simply open performance tab in task manager on Windows as suggested in the video and see where the load goes up most when running GPU-intensive programs (during this test your laptop’s screen must be disabled). There's no reference to it on the product spec reference on Lenovo website, and I couldn't find a comprehensive list of supported laptops other than this one and one covering Razer products. It's true that connecting an external display should allow you to bypass optimus, though this applies only if it connects directly to the dgpu, you'd have to rely on the aforementioned MUX switch (Hybrid off) or on the "advanced optimus" feature, as explained in detail in this video. In some cases you might have luck disabling this feature via Lenovo Vantage app, check if “Hybrid Mode” is listed there, otherwise unfortunately your system does not support switching it off. The downside is that the discrete GPU will not directly communicate with the display, all processed information will instead pass through the iGPU, clearly this negatively affects the laptop's graphic performance. Also, my laptop comes with Advanced Optimus so what I ideally wanted is that all processes would shift to the iGPU when on-battery and thus, I wouldn't see the dGPU tab in Legion Toolkit.Your laptop takes advantage of NVIDIA Optimus technology, basically the system automatically switches the graphics processing to the integrated AMD GPU under light workload conditions in order to reduce power consumption, thus extending battery life. Though I achieved similar results as yours with regards to the dGPU being powered off and slightly longer battery life, it still keeps getting pinged and awakened at regular intervals from the System process with the GPU-Copy operation, and the discharge rate spikes too. Furthermore, even though the laptop switches to the dGPU while playing games, I don't get the additional settings such as G-Sync and colour that appear in the NVIDIA Control Panel when the dGPU is fully active. The driver does seem more stable, but applications such as Adobe Premiere and After Effects keep giving me warnings that it is out of date. So I did a similar method to yours, which was using DDU instead of NVIDIA's Cleanup Tool as it kept giving me BSODs with DRIVER_POWER_STATE_FAILURE, and then installed version 531.68 w/o GeForce Experience and Telemetry with NVCleanInstall. When a non-standard adapter is connected, system switches to Hybrid-iGPU Only Mode. Hybrid-Auto Mode: Use only integrated GPU when on battery and both integrated and discrete GPU when AC adapter is connected. This mode only takes effect when discrete GPU is not working. ![]() This mode minimizes power consumption and noise. Hybrid-iGPU Only Mode: Only use integrated GPU. Weirdly enough, when I connect my laptop to AC, switch to Hybrid-iGPU mode, and unplug, the switch to full-iGPU is successful. Lenovo support has been pretty uneventful with the standard advice or reinstalling drivers, which I have done from here twice, once with DDU + NVCleanInstall, and one without, though the problem still persists. Desktops, Notebooks, Workstations Operating Systems Windows 11 Windows 10 ( Note: Windows 10 IoT is not supported.) Update Drivers, Run Diagnostics, Request Support, and More with Lenovo Vantage We recommend you use Lenovo Vantage to optimize your computer performance and enable your device security protection. Manage Display Mode in the NVIDIA Control Panel is set to Automatic Select Current Status: Integrated Graphics. I've tried to kill apps and restart the dGPU with no success. Instead, it stays in "Powered Off" or "Inactive" mode, eating up an extra 10-15 W on the discharge rate. Furthermore, the issue persists when unplugging the AC cable when the laptop is fully powered on. So for the past few days, the RTX 4060 Laptop dGPU (Driver Version 528.96) on my Lenovo Legion Slim 5 Gen 8 hasn't been turning off completely when the laptop is turned on after a complete shutdown from Hybrid-Auto mode. ![]() ![]() And yes, the problem still persists with Vantage. It runs no background services, uses less memory, uses little CPU, shows more statistics, and contains no telemetry. Just a quick note, this screenshot if from an open-source alternative to Lenovo's Vantage called Legion Toolkit. ![]()
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