Inspiron 13-7370, LCD won't wake up

Hi @pembo13
I had my motherboard replaced under warranty. It failed again within 3 months, so had it replaced again under motherboard warranty, as PC warranty had then expired. Bit of reluctance from Dell who said it might not be the same component at fault (not going to be much else with a motherboard with soldered RAM and CPU). I normally use Ubuntu, but suspected fault was beginning to return one time I booted to Windows.

Hi,

Been experiencing the same issue. Tried every suggestions. Nothing works. I've tried booting on an external SSD connected via usb (WINDOWS 10). Surprisingly, I can close the lid, put the computer to sleep and wake it up. 

Same problem here. Doesn't matter if I boot Windows or Linux. Sometimes I can wake it up by hitting the keyboard brightness adjustment button repeatedly, and sometimes by plugging in/removing the charger. The problem started less than a year ago, before the computer was fine. Such a shame. I will certainly be very hesitant buying or recommending Dell in the future. I'm thinking of downgrading the BIOS to see if it helps, but I'm not sure if that's wise.

I have a 7370 that began doing this, confirmed on win10pro and assorted ubuntu flavors. Updated bios to 1.16 (iirc). Wasted hours. Only workaround is that if I plug in a thumb drive the display comes on. Not all thumb drives work. This hack works in both win and ubuntu. It sure seems like there oughta be a bios workaround for this...

What kind of thumb drive are you using? Is it a sure fire way to boot the unit everytime?

I am using a small sandisk USB3 32GB. It does work every time for me. I don't recall which drives did not work. Will be curious to know if this works for anyone else.

On this machine it wakes up the screen after I open the lid. Until I plug in the thumb drive the screen remains black. A couple seconds after plugging in the drive the screen turns on and I can log in normally. i'm not experiencing any boot issues, not sure about those.

Does this wake up the screen? Can this also solve the no boot problem?

Interesting about how the wireless mouse works for you. That's great, beats the alternative. What model/mfr is it?

I did try an assortment of USB devices including the entry level logitech mouse/kbrd dongle. The only thing that worked for this particular unit was the sandisk thumb drive, which is low profile like the dongle so can be safely left plugged in.

And on this unit, just leaving the thumb drive in does not cause the screen to wake up when the lid is opened, I have to plug it in after I opened the lid. And the other day I did that and it did not wake up the screen. I plugged it into the USB port on the right hand side and it woke it up.

Something is clearly on the hairy edge. I'd still put my money on hardware or bios power management, simply because this is happening on win10 and multiple ubuntu flavors. All just speculation... At this point I don't have the time to fool around with earlier bios versions.

Any bios version has the same problem. I've tried different bios version. I think it's a hardware problem (ssd connection) because I can put the laptop on sleep mode and wake it up when I'm on Windows-to-go connected via usb C. 

There were similar developments from previous posts that you might want to compare with (look for mentions about USB Wake Support; I think @gillyboat from last year gave a good summary on that progress).

My current experience regarding USB devices so far is that if I leave my USB 3.0 Ethernet adapter plugged in before I boot up (not wake from sleep), my laptop will 100% run into this problem.

I would be interested in trying the recent recommendations, may I ask how you have been conducting tests?

Side note: My laptop also runs into this problem whenever I restart my laptop, which is a huge bummer regarding updates (with one exception during a recent Windows update so far). I think the random occurrence rate for this problem on my laptop has been low since I set my screen off and sleep timer to be the same. I still use force shutdown and F2 to get my laptop to properly boot whenever I run into this problem.

I didn't do anything tricky. I literally grabbed a handful of thumb drives and some wireless dongles, and a wifi dongle. Close the lid, wait 10-20sec, open lid, keyboard illuminates, screen is black, touchpad and keyboard do not wake up the screen. Plug in a USB device, wait a few seconds, screen lights up and touchpad and keyboard work. If that doesn't work remove and plug it into another USB port. That's it. That sequence worked reliably for me when I found a drive that did wake up the screen.

I tried lots of different things including inserting a USB device and changing BIOS settings , but nothing worked.
Someone mentioned they were suspicious of  the Dell version of Intel UHD graphic driver, so I uninstalled, rebooted & Windows booted with the basic generic driver. Went into the Device Manager, updated the driver letting Windows download the generic Intel UHD 620 driver. (not the Dell one)
Magic! Windows comes out of the black screen, sleep mode & hibernation everytime - have tested over 10 times today & works every time!

If you have the Dell automatic driver updater running, you'll need to stop it updating the Intel video drivers

Seems to work. Finally. Thank you!!