Loading...
Loading...
Why does only the Power Button wake some Dell Computers from Sleep? Why is it that certain generations of laptops or tablets can only be woken from sleep mode by using the power button? Why is there no Deep Sleep Control feature in the BIOS of your computer? (Even with no external connected devices (USB), the computer onboard keyboard, and touchpad can only be awoken from sleep with the power button.) Note: These computers are working as they were designed. Back to Top
Not Applicable
USB Wake Support This has everything to do with the USB Wake Support functionality of the following Dell computers: ( Table.1 USB Wake Support Functionality) Computers with USB Wake Support Functionality Inspiron Vostro XPS XPS Desktop Latitude OptiPlex Precision Mobile Precision Workstation 14" 7472 13" 5370 15" 9560 27" 7760 AIO 12" 7285 5050 15" 5520 5720 AIO 15" 7572 14" 5471 13" 9370 12" 5280 3050 15" 7520 3620 Tower 15" 7577 15" 7570 12" 5288 5055 A-Series 17" 7720 3420 Tower 13" 7370 14" 3478 14" 5480 5055 Ryzen CPU 15" 5530 2-in-1 5820 Tower 13" 7373 2-in-1 15" 3578 14" 5488 5250 15" 7530 7820 Tower 15" 7570 15" 5580 7050 17" 7730 7920 Tower 15" 7573 2-in-1 11" 3180 3050 AIO 7920 Rack 13" 5370 11" 3189 7450 AIO 15" 5570 13" 3380 17" 5770 12" 5289 14" 3476 13" 7389 15" 3576 12" 7212 14" 3490 12" 5285 12" 7280 13" 7380 14" 7480 14" 3480 15" 3580 14" 7490 What is USB Wake Support? There is a BIOS setup setting on some computers called USB Wake Support, which can enable or disable the ability of a USB device to wake the computer from the S3 state (Sleep). When enabled , USB devices can wake the computer from S3 (for example, USB mouse, USB keyboard). Furthermore, on All in One (AIO) computers, the touchscreen is a USB input device and can also wake the computer. When disabled , USB devices cannot wake the computer form S3. Disabling this setting can help a user save power by turning off power to the USB ports in S3. USB Wake Support does not function on battery power; that is, if a laptop on battery power enters S3, USB devices cannot wake it up. Whether the USB devices are externally powered or derive their power from the computer’s USB port makes no difference. The determining factor is whether or not the computer’s USB ports are powered and able to detect USB traffic. The computer turns off power to the USB ports in order to conserve power, upon entering S3. Some computers support a feature called Deep Sleep . For USB Wake to work, the USB ports must not be in Deep Sleep. Deep Sleep Support: When set to Disabled: All USB ports can wake up the computer from S3, but only the computer's Smart Power On Connector port can wake up the computer from S4 and S5. When set to Enable S5 only: All ports can wake up the computer from S3, but only the computer's Smart Power On Connector port can wake up the computer form S4. No wake support for S5 When set to Enable S4 and S5: All ports can wake up the computer stem from S3. Wake from S4 and S5 is disabled in this case. Back to Top
Click on a version to see all relevant bugs
Dell Integration
Learn more about where this data comes from
Bug Scrub Advisor
Streamline upgrades with automated vendor bug scrubs
BugZero Enterprise
Wish you caught this bug sooner? Get proactive today.