BT mouse cannot wake system from MS in dc mode

Question

BT mouse cannot wake system from MS in dc mode

Liyuan Chen(LUXSHARE-ICT) 0

System enter MS,after a while ,system cannot wake by bt mouse,but can normal wake from input keyboard.From sleepstudy it show sleep has a state that "Restricted Standby Battery Drain Budget Exceeded".this state change will cause I cannot wake by bt mouse?

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Answer 1

Hendrix-V 19,485 Microsoft External Staff Moderator

Hi Liyuan Chen(LUXSHARE-ICT),

The fact that the Bluetooth keyboard can still wake the system while the Bluetooth mouse cannot is an important clue, as it suggests the system's Bluetooth functionality remains active but the mouse may no longer be permitted to generate wake events after the device enters a more restrictive Modern Standby state.

The Sleep Study entry "Restricted Standby Battery Drain Budget Exceeded" indicates that Windows detected higher-than-expected power consumption during Modern Standby and transitioned into a more restrictive power state to help preserve battery life.

To investigate further, you may want to:

Compare behavior when the system is connected to AC power versus running on battery.
Check whether the Bluetooth mouse is allowed to wake the computer in Device Manager and whether any power-saving options are enabled for the Bluetooth adapter.
Review additional Sleep Study entries around the time the wake failure occurs to identify any recurring power-management transitions.
Verify whether the issue occurs with other Bluetooth mice, which can help determine whether the behavior is device-specific.

If the issue persists, collecting a Sleep Study report together with power-management diagnostics may provide additional insight into why wake capability changes after extended time in Modern Standby.

Let me know if you need further assistance, feel free to ask me by clicking "Add Comment" or "Add Answer" if you cannot add comment so your response will be visible. Thanks for your effort.

Liyuan Chen(LUXSHARE-ICT) 0 Reputation points

2026-09-30T07:52:43.8433333+00:00

Hi Hendrix

Bluetooth Keyboard also cannot wake system,but usb keyboard and usb mouse can wake system.
Hendrix-V 19,485 Reputation points Microsoft External Staff Moderator

2026-10-01T01:30:02.9766667+00:00
Hi Liyuan Chen(LUXSHARE-ICT),

Since both the Bluetooth mouse and Bluetooth keyboard lose wake capability, while USB mouse and USB keyboard can still wake the system, this makes the issue look less likely to be specific to the Bluetooth mouse itself and more likely related to how Bluetooth devices are handled after the system enters a more restrictive Modern Standby state on battery power.

To help narrow this down further, could you confirm:

Does the issue occur only on DC (battery) power, or does it also happen while connected to AC power?

After the wake failure occurs, can Bluetooth devices reconnect normally once the system is awakened using a USB device?

Does powercfg /devicequery wake_armed show the Bluetooth keyboard or Bluetooth adapter as wake-capable devices?

Is this behavior reproducible with multiple Bluetooth keyboards and mice, or only with a specific Bluetooth module/device combination?

Based on the symptoms described so far, it would be reasonable to investigate Bluetooth adapter power-management behavior during Modern Standby, particularly after the system enters the restricted standby state. Collecting an updated Sleep Study report together with Bluetooth and power-management diagnostics may help determine whether wake permissions for Bluetooth devices are being limited when that state is reached.
Hendrix-V 19,485 Reputation points Microsoft External Staff Moderator

2026-10-02T07:50:26.5533333+00:00

Hi Liyuan Chen(LUXSHARE-ICT),

If you have any further questions or updates regarding this issue, please feel free to let me know in the Comments section. I'd be happy to assist you.