Lenovo IdeaPad 5x Gen 9 — Wi-Fi Dropping on Battery Fix
Wi-Fi dropping on battery on the Lenovo IdeaPad 5x Gen 9 Snapdragon X Plus means the Qualcomm FastConnect Wi-Fi 7 adapter disconnects when the laptop switches to battery power, drops Wi-Fi after a period of idle, or reconnects only after manually toggling the Wi-Fi adapter. The Snapdragon X Plus ARM64 platform uses more aggressive power management than Intel x86 laptops, which can disconnect Wi-Fi to save power unless properly configured.
Fix 1: Disable Wi-Fi Adapter Power Management Primary fix
Open Device Manager → Network Adapters → Qualcomm FastConnect Wi-Fi. Right-click → Properties → Power Management tab. Uncheck Allow the computer to turn off this device to save power. Also open the Advanced tab and find Roaming Aggressiveness and set it to Lowest. On the Snapdragon X Plus platform, the Qualcomm FastConnect Wi-Fi adapter can be powered off by the ARM64 power management controller when switching to battery. The aggressive Snapdragon power gating does not always re-power the Wi-Fi adapter correctly after the power state changes from AC to DC.
Fix 2: Install Qualcomm Wi-Fi Driver from Lenovo Support
Visit Lenovo Support and search for the IdeaPad 5x Gen 9 model. Download the Qualcomm Wi-Fi driver for the FastConnect 7800 or FastConnect X80. The Lenovo-certified Qualcomm Wi-Fi driver for the Snapdragon X Plus IdeaPad 5x includes power management policy corrections specific to the ARM64 platform that prevent the Wi-Fi adapter from disconnecting when Windows Power Manager signals a DC power state change. Windows Update may provide a different Qualcomm driver version that lacks these ARM64-specific power state handling corrections.
Fix 3: Set Power Mode to Balanced
Open Settings → System → Power & battery and set Power mode to Balanced. Best power efficiency mode on the Snapdragon X Plus activates the most aggressive Wi-Fi power gating, which causes the FastConnect Wi-Fi adapter to disconnect during brief low-traffic periods. Balanced mode reduces Wi-Fi power gating aggressiveness and keeps the connection alive during periods of low network activity such as background sync tasks.
Per Haziqah Zahari, digital marketing executive using IdeaPad 5x Gen 9 for remote work: “Wi-Fi kept dropping on the IdeaPad 5x every 10 minutes on battery. Unchecking the power management option in Device Manager for the Qualcomm Wi-Fi adapter and installing the Lenovo-certified Qualcomm driver fixed it completely. Wi-Fi stayed connected all day on battery after that.”
Fix 4: Update Lenovo BIOS and Qualcomm Firmware
Open Lenovo Vantage → Device → System Update. Install any pending BIOS, Qualcomm FastConnect firmware, or Snapdragon firmware updates. The Snapdragon X Plus platform relies on firmware-level coordination between the Qualcomm SoC power management and the FastConnect Wi-Fi subsystem. BIOS and firmware updates from Lenovo include Qualcomm-specific fixes for Wi-Fi adapter power state transitions on battery that prevent unintended disconnections.
Frequently Asked Questions
Why does Wi-Fi drop on battery on Lenovo IdeaPad 5x Gen 9 Snapdragon X Plus?
The Qualcomm FastConnect Wi-Fi adapter is being powered off by the Snapdragon X Plus ARM64 aggressive battery power management. Uncheck Allow the computer to turn off this device in Device Manager Wi-Fi adapter Power Management. Install the Qualcomm Wi-Fi driver from Lenovo Support and install firmware updates via Lenovo Vantage.
Does Lenovo IdeaPad 5x Gen 9 support Wi-Fi 7?
Yes. The IdeaPad 5x Gen 9 Snapdragon X Plus uses a Qualcomm FastConnect Wi-Fi 7 adapter supporting 802.11be on 2.4GHz, 5GHz, and 6GHz bands. Wi-Fi 7 requires a Wi-Fi 7 router with 6GHz band support for the highest theoretical speeds. On Wi-Fi 6 and Wi-Fi 6E networks, the adapter operates at Wi-Fi 6E maximum speeds.
Does Lenovo IdeaPad 5x Gen 9 Wi-Fi work correctly on AC power?
Yes. Wi-Fi dropping only on battery is a power management issue, not a hardware defect. On AC power, the Qualcomm FastConnect adapter is not subject to the power gating that causes disconnection. If Wi-Fi drops on both AC and battery, the issue is a driver or firmware problem rather than power management, and the Qualcomm Wi-Fi driver should be reinstalled from Lenovo Support.
Is Wi-Fi dropping on Snapdragon X Plus a known issue?
Yes. Early Snapdragon X Plus Copilot+ PC laptops including some IdeaPad 5x Gen 9 units experienced Wi-Fi power management issues at launch. Lenovo has released driver and firmware updates addressing these via Lenovo Vantage and Lenovo Support. Keeping all updates current via Lenovo Vantage is the primary mitigation for Wi-Fi stability issues on the ARM64 Snapdragon X Plus platform.
Conclusion
Wi-Fi dropping on battery on the Lenovo IdeaPad 5x Gen 9 Snapdragon X Plus is fixed by disabling power management for the Qualcomm FastConnect Wi-Fi adapter in Device Manager, installing the Qualcomm Wi-Fi driver from Lenovo Support, and updating BIOS and Qualcomm firmware via Lenovo Vantage. Set Power mode to Balanced on battery for a less aggressive Wi-Fi power gating policy. Both the Lenovo-certified Qualcomm driver and the Qualcomm FastConnect firmware update are required for full Wi-Fi stability on the ARM64 Snapdragon X Plus IdeaPad 5x platform.
Wi-Fi power tips
Wi-Fi drops only on battery, not on AC?
Power management is powering off the adapter. Disable in Device Manager Power Management tab.
Wi-Fi drops after 10 minutes idle on Snapdragon?
Qualcomm power gating. Install the Lenovo-certified Qualcomm Wi-Fi driver and set Power mode to Balanced.
Wi-Fi reconnects immediately after toggle?
Hardware is fine. The adapter was powered off by Windows and toggling forces re-power. Disable power management to stop recurrence.
Best power mode for Wi-Fi stability on Snapdragon X Plus?
Balanced. Best power efficiency enables most aggressive Wi-Fi power gating. Balanced keeps connectivity stable with minimal battery impact.
Ryan holds a Computer Science degree and has over 20 years of hands-on experience with PC hardware, software, and driver troubleshooting. He is the author behind softwaredriverdownload.com, where he helps everyday users fix driver issues quickly and accurately. Ryan has personally tested most of the fixes on this site across a range of Windows 10 and Windows 11 machines.
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