External monitor won t wake up from sleep

Then, before you wake up your Mac, switch the monitor back on, then wake up your Mac. Apr 24, 2024 · Check Power Settings: Navigate to the Control Panel, then go to Hardware and Sound > Power Options. Jan 28, 2020 · I use Windows 10 laptop mostly with external monitor. post) # Commands to execute after wake. It's an intermittent problem so not everytime. Some customers who have purchased an M1 Mac mini have been experiencing an issue that causes the machine not to wake a connected third-party Nov 17, 2020 · Monitor not waking up from sleep M2 Mac mini Ventura 13. You can do that or just disable Deep Sleep on the monitor. I checked the ability to wake the mouse in the device manager and updated the graphics card drivers. 1. I need to open the laptop, wake it from sleep, plug it into the monitor and close the lid. Select the sleep and power settings. Click the Hardware tab, and then click Properties. Jul 6, 2022 · Generally, you can wake your Windows 11 in the following ways, depending on the device: Press the power button. Only a reboot. Hibernation automatically starts after a set time of Sleep. Right-click on your graphics driver and select “Update driver”. When my laptop goes to sleep or boots up with the docking station connected it will not kick on the external monitors after verifying my face and logging in. Press Windows Key + W and type troubleshooting in the search box. I have to force shutdown via a long press of power button, losing all open work in the process. Lid Opening/Closing. Step 3 : Disable s3 ( sleep mode) and this will disable sleep mode from OS. Aug 15, 2013 1:36 AM in response to KeyBored. Save & exit. If the monitor does not wake up from sleep mode Feb 22, 2024 · Click and switch to the Power Management tab at the top. Jan 10, 2023 · Fixing NICs. msc then hit enter. It used to wake up enough to show the lock screen and if I didn't touch anything the monitor would turn off after a minute and then an hour later the computer would turn off Jan 1, 2020 · Monitor not waking up from sleep M2 Mac mini Ventura 13. I did this but it did not fix the problem. A new window will open. I then have to switch off and switch on the monitor for the display to come on. The Mac starts, polls all the ports for attached devices, and then boots. Then, from the settings at the top of the screen, choose “AI Tweaker,” then click the drop-down next to “Internal PLL Overvoltage” and change it to OFF. May 18, 2022 · That means it is not the monitor. Disconnect external devices other than your Apple keyboard, mouse, and display. If you can't wake your PC from sleep with the keyboard, click the arrow next to Keyboards . If this option is already checked, uncheck it, and click OK. After deleting all the entries and restarting the pc the external monitor is added again to the registration. I have to open the lid first, and then press the power button, then close the lid and continue working with external monitor. Double-click Keyboards, then right-click HID Keyboard Device. Can this be fixed? Also, when I send the laptop to sleep, the power button blinks. Our monitors (connected with DisplayPort to the USB-C docking station) do not wake up after laptop goes to sleep, when trying to resume work on the computer all other devices plugged into the dock resume function except monitors. . Sep 19, 2020 · Pressing Win + Shift + Ctrl + b does fliker the screens, but the monitor does not wake up. The monitors work perfectly when the HDMI adaptor is plugged in, but when the laptop awaked from sleep, only one of the external monitors is detected. It started just after new update. Unplugging the USB-C to HDMI cable doesn't help. I used to have similar issues occasionally when it wouldn't wake up from hibernation properly, the screen Dec 31, 2007 · I mostly run the system plugged in and have set the screen to sleep after 10 min, and system sleep set to "never when plugged in". Jan 19, 2015 · Follow the steps below to run power troubleshooter. All up to date. After checking or changing the sleep setting, check the monitor to see if it works. This is what fixed it for me: - Open up "NVIDIA Control Panel" by right-clicking on your desktop. Oct 17, 2022 · The problem is that the monitors won't wake up after the computer is reintroduced to the docking station. Jan 18, 2021 · 01-18-2021 04:01 PM - edited ‎01-18-2021 04:01 PM. In a cmd/admin prompt : Powercfg /hibernate off Then do a complete shutdown/boot. This list will show one or more entries for your PC keyboard. Jun 3, 2019 · Set-up: Dell XPS 13 9370, LG 27UD88-W, Surface keyboard and logitech Mx2 anywhere mouse. Dec 30, 2021 · Step 2: Press F2 and get into bios -open power setting. Go to Power Management on the far right of the menu. Jun 7, 2021 · I'v read a couple of post on this problem. Its obviously frustrating to have to do this Nov 17, 2021 · Weird thing is I put it to sleep when I go to bed but when I tap my keyboard or mouse button to wake it everything comes on except the monitor does not receive a signal. It seems like this would be a pretty standard feature. Product: Pro X2. Then you will know you've tried everything in addition to Windows Update drivers. Both of the USB-C display ports on the back of the dock are connected, via USB-C to DVI-D, to two monitors. Change the Power Settings in Windows 11 Cannot Wake Up From, Sleep. Disable Wake for network access in macOS (SystemPreferences -> Power) Seems to break on a lot of hacks. From the Startup Type menu, select Manual > OK . I use a USB-C cable. 3. Feb 6, 2019 · After wake-up, the dockig station is working for sure, because I have an external keyboard attached to it through a USB WiFi stick and it's working. Periodically, the laptop won't wake from sleep. Run powercfg -hibernate off. Click Apply > OK. Open Screen Saver Settings by pressing Windows key + X, and then clicking Control Panel. Once the device is re-plugged, it will not be recognized unless the system is awake. I think Win+D is not needed. b) Now type devmgmt. I don’t have Csenabled in the registry editor Apr 22, 2020 · It works fine until the Mac Pro 2019 goes to sleep. But for some reason when connected to external monitor it does not wake up from sleep. To set the time interval before the computer goes to sleep, drag the "Turn off the monitor after" slider. Click your mouse button. When the lid is closed while coming back from sleep, the monitor says no HDMI signal, even though the mouse and other components are working just fine. Click on View all on the left pane on the next Window. Simultaneously press the Windows key + R and then paste the following in the box: “devmgmt. Now double-click the device and re-enable Allow this device to wake up the computer. few things can cause this. Mouse. The only way in which the second monitor can work is if I physically unplug the video connection from Mar 25, 2021 · Thursday March 25, 2021 2:32 pm PDT by Juli Clover. It's an Asus GL502VM. Pick Power from the list so available, this would launch Power Troubleshooter. So far, disconnecting and reconnecting the Displayport cable seems to be the simplest solution. Dec 18, 2023 · Go and click the Change Plan Settings. Have to turn it off and back on every time. Apr 2, 2022 · At this point, whatever I try does not wake up the laptop. Do one of the following: To turn off all screen savers, under Screen saver, click (None) list, and then click OK. Power Button. Click Change plan settings for the power plan that is selected. Have you tried turning the external display off and on again? Seems to help. Jul 5, 2017 · I fixed the issue with secondary monitor not waking up after exiting sleep mode by changing bios settings: Go to Power tab: change "Hibernate like Soft OFF" value to disabled. I've tried this, it does not work. When I come back and move the mouse or hit a keyboard key, many many times only one of the monitors turns back on. At the desktop, click the Window box, then goes into the settings. Restart your computer, test on your machine again and see if it wakes up without fail. DO. Power cycling the TV doesn't help. This only occurs after waking them from a sleep state, and they work fine when booting up my PC from scratch. It may be necessary to cycle things completely, and a delay is needed to let things settle: xset dpms force off; sleep 2; xset dpms force on. In the Control Panel search field, type services, and then select Administrative Tools from the list. Right-Click on Plex Icon in the System Tray > Open Plex > Settings (wrench icon top right) > General (under the Settings header) > Uncheck "Support Away Mode when preventing system sleep " > Reboot. If you are using a Mac notebook: click Battery and click Battery or Power again. Mar 13, 2023 · Here is how you can quickly fix second monitor not getting detected after waking up from sleep on your Windows 10 and 11 computers. Aug 22, 2019 · 2. Once done, restart your PC for good measure. And a last one Just because coincidences exist and the problem may have come at the same time as the second monitor but would have not been caused by it : rolling to an older graphic driver and disabling windows from automatically update drivers. Once it makes up its mind the thing is asleep / gone, the only way to bring it back is to power cycle the dock. On top of this, the mouse and other UI components stutter when being moved. May 19, 2023 · Laptop is Lenovo Yoga running Windows 11 with Intel(R) Iris(R) Xe Graphics driver. eOAnsari. (If the device goes into Sleep mode for a long time, it will transfer the power status Oct 28, 2021 · Interestingly, the monitor wakes up when it is turned off for about 1-2 minutes, but after this period it cannot be woken up with the mouse. I have tested both monitors in a single monitor setup and the issue goes away completely as they wake from sleep Jun 7, 2017 · To get started, open the Device Manager > locate the mouse/keyboard then click it to expand > right-click mouse/keyboard and click Properties > Select Power Management tab > add a check mark on Allow this device to wake the computer. Feb 5, 2020 · 0. Apr 11, 2021 · This means you have to manually turn on your monitor when Deep Sleep is enabled. Expand the “Display” settings and ensure that the display is set to turn on when waking the computer. Reset NVRAM. Then the screen should be recognized. Before putting monitor to sleep, just type "WIN" + "D" combo key to minimize all desktop windows. Figure 3 ; The Block Sleep Option ( whichcan also be called Deep Sleep Control) is only available on Desktop computers, clear it to Disable it. you may have to go into safe mode to fix it. Everything seems to be working, except that after the MBP has been in sleep mode for a few hours or overnight, the MBP will wake up but the monitors won't. This is a common behavior even among Razer laptops In Windows, search for and open the Control Panel . Expand Sleep, and then expand Allow hybrid sleep. You'll see a list of categories for the devices connected to your PC. Reply. You solve the problem by removing the computer Jan 12, 2023 · Follow these steps: Right-click on the Start Button, or press Win + X, to open the Power User menu. Click Apply at the bottom (Figure 3). I’ve had this problem a number of times in the past, over the 10 or so Mac laptops I have owned, and the only reliable solution is a new Jan 1, 2023 · Checked the Benq monitor settings for any sort of sleep mode. Click the Change Settings button. We are using probook 450 g8 and elitebook 850 g8 with the dock all with updated drivers/bios. Apr 15, 2024 · Then Select USB Wake Support, check the box to Enable USB Wake Support. Method 2: Roll-back driver. Hi all, I'm having issues where my monitors won't wake from sleep in a dual monitor setup. NOTE: Monitors will wake up from sleep mode as soon as they detect a video signal from the computer. Locate and expand Display adapters. Jun 7, 2020 · 2x HP 22cwa monitors - (1) connected HDMI and (1) connected VGA. Yesterday, I noticed that when I connect my SB3 to the dock, only one of the monitors gets woken up while the other one remains asleep. To resolve this issue for, follow these steps: Open the Keyboard control panel item, as described in Method 1. I have a new Macbook Pro M1x Max (2021) that I have connected to two external monitors via an OWC Thunderbolt dock. Click on the Troubleshooting from the search results so obtained. #10. Jul 30, 2022 · Wait for the process to complete, once completed, restart your computer and check if it resolves your issue. May 26, 2020 · Even this does not wake up the display. In the search box, type screen saver, and then click Turn screen saver on or off . Jan 4, 2018 · Feb 6, 2018. Apr 22, 2021 · Monitor not waking up from sleep M2 Mac mini Ventura 13. Reach to Power options as in previous step > Click Choose what the power buttons do > Click Change settings Nov 27, 2022 · You can also try older drivers in Device Manager > Display device > Driver tab > Update Driver > Browse > Let Me Pick. How to Fix PC Monitor Not Waking up From Sleep Mode In Windows 11 When my monitor began refusing to wake up from sleep mode, I started researching the issue To wake up a computer or the monitor from sleep, standby, or hibernate, move the mouse or press any key on the keyboard. All display drivers are up to date. May 17, 2020 · In Windows, search for and open Control panel. Open Device Manager by searching for in the start menu. In the Control Panel, select the “Device Manager” option. Click on “Change plan settings” for your current power plan, and then select “Change advanced power settings. On the Confirm Device Removal dialog box, click OK to start the uninstall process. If the monitor does not wake up from sleep mode Then Select USB Wake Support, check the box to Enable USB Wake Support. Laptop, external keyboard and other peripherals are up an running after laptop wake up. I tried to unplug power cable and wait for a while to reset something. Oct 17, 2017 · The external LG display works except that it will not wake up from sleep when the iMac does. Unplugging and plugging back in the thunderbolt cable connecting the display fixes this and resets the displays and turns on the LG. HP: Windows 10, NVIDIA GTX 745, mDP (also tried with HDMI) My Dell U2715HM does NOT have this issue (with either machines). Turning the display off and on again worked. When it goes to sleep I can't wake it up with the power button. Move your mouse. Nov 21, 2017 · Uninstall: Start Control Panel, click Hardware and Sound, and then click Device Manager. Use xrandr command to get the identifier. Some extra info: From reading online, some people experiencing a somewhat similar issue are able to get their screen to wake up by plugging in another screen to hdmi port and then unplugging it. Holding down Option and clicking "Detect Displays" in Display Preferences doesn't help. Dell: Windows 7, ATI Radeon, HDMI. Click Change advanced power settings. Aug 23, 2023 · This is an expected behavior not just from Razer devices but with any device with a USB connector. Use the drop-down, and select the never. 2. #1. Select Services > Windows Update to view the properties. Save your changes and exit the BIOS. Double-click on Sleep, then set Allow hybrid sleep in Off and set Allow wake timers to Enable. I wonder if you put it to sleep without anything connected from the beginning, then wake it and wait for 2 mins, see if it comes back. When coming out of "sleep" (yeah, power management issues still haven't been fixed!), the external monitors will no longer power up. I'd like my laptop to wake from sleep when I plug it into my monitor. Press any key on your keyboard. Checked that the keyboard and mouse can wake the PC. In the Device Manager window, expand the “Display adapters” category. Click on the Driver tab at the top and then select Roll back driver. ), then click the Power Button to wake up the device. I'll try to give as much background as possible and the steps I've taken so far to try to fix the issue. Then switch the monitor off. Mar 23, 2012 · 2,527 points. After turning on monitor, type "WIN" + "D" again to restore all windows. Sep 19, 2023 · Wake PC From Sleep with Mouse. ) Method 3: Verify that your device is allowed to wake the computer. ”. Open run box by pressing Windows Key + R and type devmgmt. Monitors are connected via the USB-C ports on the dock. Feb 22, 2016 · Microsoft driver update for Surface Management Engine. Oct 30, 2020 · Click Change plan settings for the power plan that is selected. The system still knows the big screen is attached because it doesn't revert to using the laptop Oct 30, 2022 · Hello, I updated my MacOS to Ventura 2 days ago. To change settings--Open Power Options, Advanced settings and turn Hibernation off or change the settings. Jun 6, 2016 · I'm now back to suspecting something within Win 10, possibly due to there being no specific drivers from Asus for my monitors; they use the generic drivers. Apr 24, 2021 · and wait a few seconds and then hit a key to unblank the screen. The problem is that when the Mac wakes from sleep, the display does not wake up — and even the buttons on the display (including the power button) are nonresponsive. I do not face this issue when I use only the Monitor Laptop. I have to force shutdown and turn on again. Has been working very reliably for me in Monterey as of the last few months, but now when jumping to Ventura 13. c) At the device manager screen, right click on the Mice and other pointing devices. Nov 17, 2023 · Open the Windows Control Panel by pressing the Windows key + X and selecting Control Panel. Disable Fast Startup. To do this, turn on the On-Screen Display on your monitor, select “Others -> Monitor Deep Sleep,” then disable it there. Right-click on the driver and select Update driver. step 4: its done / it will resolve the issue without any other side effects except on you will not see sleep mode in your laptop/system. 1 I got a black screen external display after the second attempt to wake from sleep. Select Properties. The issue is the wake up time on your external monitor. Sep 24, 2020 · Our monitors (connected with DisplayPort to the USB-C docking station) do not wake up after put to sleep, when trying to resume work on the computer (which hasn't been powered off or sleeping/hibernating during the time) Workaround is to unplugg the USB-C cable from the computer and plug it back i Hello! As the title implies, my external monitor that I am using with my laptop won't wake from sleep when turning on/waking up my laptop. No amount of toggling, reconnecting cables, or powering the dock up and down will fix it. Mar 22, 2016 · These additional steps may help identify or resolve the issue: Reset the SMC. But the monitor is slower to respond, so the Mac doesn’t see it initially. select monitor #2 and set resolution to 1280x720 and Apply on it too, restart pc. A hard reset is the only method of forcing the screen to work again. Reply How to resolve issues when the monitor does not display while the system is using a dock Apr 11, 2023 · Monitor not waking up from sleep M2 Mac mini Ventura 13. Expand the node that represents the type of device that you want to uninstall, right-click the device entry, and click Uninstall. Feb 11, 2021 · Monitor not waking up from sleep M2 Mac mini Ventura 13. This may wake up the external monitor. Windows Key+i > System > Power & sleep > Click Additional power settings to open Power options > Click Change Plan Settings > Click Restore default settings for this plan. Make sure the View by setting is set to Category, and then click Hardware and Sound. To check if your mouse and keyboard can wake your monitor up, follow the steps below. but go to display settings, select monitor #1 and change resolution to 1280x720, go up and APPLY. Figure 4 ; Exit the BIOS. Click Power Options. Restore Default for Power Settings. Opening and then closing the lid fixes this problem, but that is difficult to do every time. Here, expand the “ Mice and other pointing devices ” section, right-click on your mouse, and select “ Properties . NICs (network Interface Controllers) are fairly easy to fix with sleep, it's mainly the following: Disable WakeOnLAN in the BIOS. Apr 14, 2020 · Our monitors (connected with DisplayPort to the USB-C docking station) do not wake up after put to sleep, when trying to resume work on the computer (which hasn't been powered off or sleeping/hibernating during the time) Workaround is to unplugg the USB-C cable from the computer and plug it back in. ;; YOUR_MONITOR is a placeholder, replace it with your identifier (should look like HDMI-1, DP-1 or similar). That requires a brief push of the computer's power button to wake it up. It does not appear to be a windows issue because if Windows goes to sleep before the monitor does, then everything comes back. Then click on Change advanced power settings. Jan 9, 2012 · Hi, Try the following methods and check if it helps: Method 1: Ensure to enable the option of Allow this device to wake the computer for the Mouse. Nov 9, 2023 · My monitors go to sleep (which I want) after a few minutes of inaction. The other remains shut off. Feb 23, 2022 · Before we proceed, we assume that you want to wake up your laptop using an external USB device like a wired/wireless keyboard, mouse and etc. Mar 7, 2023. Adjust the screen resolution until it fits and looks best at Settings > System > Display. When you put your Mac to sleep, wait for the external monitor to show "no signal" or go black. SAMSUNG Monitor doesn't "detect" after going to sleep with laptop. xrandr --output YOUR_MONITOR --mode 3840x2160. msc and click OK or simply press Enter. Only thing that works is to hold the power button down for 20 seconds and force a restart. Another strange thing is that when I set my monitor to 60hz instead of 144hz the wake-up is fine. You can also deselect "Prevent automatic Dec 6, 2018 · How to resolve issues when the monitor does not display while the system is using a dock Mar 7, 2023 · Windows 11. Set your lid (power functions) to sleep (suspend) when lid is closed. If I press the power button or choose the sleep option from the Start menu, it works properly, even if the lid was closed after it went to sleep. Did not have this problem with any other Win 10 laptop/ external monitor combo. If that resolves the issue, gradually reconnect your devices, testing each time, until you find the device that is interfering with sleep. o have two options: Using Device Manager Via BIOS Aug 13, 2015 · However, after plugging in a USB Hub and then plugging the external Keyboard and Mouse into the USB Hub, the laptop will no longer wake up from sleep with the external Keyboard or Mouse. The monitor is usually kept in sleep mode. When a USB dongle or device is removed from a system when in sleep mode, the control unit inside it will reset. I have an Asus ROG Zephyrus M GU502GU laptop with an NVIDIA GTX1660Ti. If any of y'all are using Plex, that's causing the PC to go into Away Mode and causing this issue. I have a Samsung external monitor I'm connecting via the display port. My iMac can go sleep and wake up without any issues for shorter periods. Select Off from the On battery drop-down menu, and then select Off from the Plugged in drop-down menu. Only after the monitor times out and goes into power save does this problem surface. Operating System: Microsoft Windows 10 (64-bit) The HP DisplayLink 4K docking station is a failure. Press the Windows + R key combination to start the Run box. If I step away for a bit and come back to sleeping screens, I can jiggle the mouse and wake up the laptop screen only. msc in the search files and programs field. Dec 3, 2020 · To set the time interval before the computer goes to sleep, drag the "Computer sleep" and "Monitor sleep" sliders. Another post suggested the problem was with the monitors' power May 17, 2020 · Our monitors (connected with DisplayPort to the USB-C docking station) do not wake up after put to sleep, when trying to resume work on the computer (which hasn't been powered off or sleeping/hibernating during the time) Workaround is to unplugg the USB-C cable from the computer and plug it back in. Type devmgmt. Jun 28, 2019 · The problem only occurs if the sleep was triggered by closing the lid. Unable to immediately replace the monitor, I switched back to a one-monitor setup, cutting any feed to the second monitor. Power In/out. The monitors we have noticed this most with are a mode called Philips B Line 2421B1 and 2421B1H (the difference is one has an internal web cam). One post suggested I update the Nvidia Graphics Driver from the Nvidia website. Select Stop to stop the service from running. Tags: Nov 22, 2020 · When the MacBook Air goes to sleep and I wake it, the TV reports receiving no signal, and the MacBook doesn't seem to "see" the display any longer. Check the box for Allow this device to wake up the computer at the top. Jun 14, 2021 · Connected via HDMI. It wakes up from sleep and works normally. 1 I am using a M2 Mac mini running Ventura 13. Jun 11, 2024 · Click the chosen power plan and click Change plan settings. Dec 25, 2021 · Dec 25, 2021. An automatic wait may not work, watching it manually may be more effective. Keyboard. 1 connected to an HP w2207 monitor via a hdmi to dvi d cable. Once you have tried all of these, let us know the end result. Oct 4, 2023 · Roll back to a previous display driver. I have to always unplug and plug back multiple times to make it work after my laptop went to sleep! I had no such problem with Dell docking station. - While the Control Panel is open, turn your screen (the one that's not being recognized) off and then on. If your Mouse hardware supports it, you can wake PC from sleep using the mouse. •. So I can switch back and forth most of the time without issue, but if for whatever reason the dock makes up its mind the monitor should be asleep, it stays that way. Select Device Manager . However, as this laptop is being used as a Desktop, the laptop lid is kept closed at all times Feb 6, 2024 · If you experience that the device does not wake up from Sleep or Hibernate mode, please connect an AC adapter and make sure the battery charge indicator is ON (The below takes the laptop as illustrated. Search the sleep mode in the search bar. Most systems will enter a sleep/wake loop with this enabled. The laptop is connected to two external monitors via USBC port and HDMI adaptor. To wake up a computer or the monitor from sleep, standby, or hibernate, move the mouse or press any key on the keyboard. Nothing wakes the laptop. It will connect when I boot up but when my computer goes to sleep it won't detect the monitor when it awakes. The computer will wake from sleep but the monitors will not wake unless I unplug and plug back in the USB-C cable. Oct 19, 2022 · 10-19-2022 06:56 AM. ( Detect Displays does not work. If this does not work, press the power button to wake up the computer. Monitor has been reset to factory state. The script above handles waking up the system after it has been put to sleep. It squeezed all task bar icons to the right hand side and freeze there. <Violations as defined by Dell removed. d) Select properties. When I boot up the mac mini the monitor refuses to wake up. Find the option and choose “Advanced Mode. WD15 docking station - current firmware . a) Click on start. Scroll down and expand the PCI Express option. Mar 7, 2018 · try this first. 4. I can change the monitor sleep setting to Never but when the PC goes to sleep the monitor loses the signal and then it won’t wake up. Key point here is that the machine is recognizing the power button being pressed. Now expand the Link State Power Management and click on the Maximum Power savings. In Windows Display Settings, when I click on the "Detect" button the result is: "Didn't detect another display" After wake-up: Turning off-on or pluggin off-in the monitors from the dock did not help. I know it;s weird but for some reason it works. I connected my external monitor directly via TB3 cable and my monitor takes TB3 as input. msc”. But if computer sleeps more than 3 or 4 hours it doesn't wake up at all. To turn on a screen saver, under Screen saver, click an item Sep 18, 2015 · I have Dell and HP machines and after either machine goes to sleep and then wake up, the monitor does not wake up. It's the computer that is in Hibernation. Mar 9, 2024 · Restart your computer, then press the Delete key until the BIOS screen appears. It only wakes up if the built-in laptop keyboard is pressed. Click Apply at the bottom (Figure 4). log on and let it sleep and wait 5 minutes and wake and see what happens. Expand the Display adapters option and then right-click on your display driver. 3. External 32" Benq monitor attached to 15" Dell laptop won't wake up after sleep. lj cy to vr lj oa je nv on at