M4800 Owner's Thread

You don't have this problem because you're not using the feature that allows you to keep your laptop running while lid is close.
For me (and I assume many others) this feature is important.

 

Actually, I am. Closing the lid and pressing the power button both "do nothing" (first thing I do with a new machine). The machine will sleep when on battery, after some time.


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So if you close the lid (while in Windows) and open it again, your screen turns back ON or it stays black ?

 

Yes, just tested. Works as it should while plugged in. On battery it will sleep when the lid is closed, so on opening, you need to push power to wake it up and get the login screen.

 

Thank you, alexhawker, for testing this. What is your Motherboard revision (you can check it using CPU-Z ) ?

 

See the image below:




Edit: FYI, I recently disabled Link Power Management in Intel RST and the power options - I don't know if that might be related or not, but you could try it.

 

I have the same "blank screen issue" when I close the lid in the BIOS and I do think it is an issue because you will also trigger the same behavior under Linux whenever the screen blanks. at least with the nvidia driver. I'll have to try with the nouveau driver as well.

I believe this is a DPMS Bug in the BIOS.

 

I also just realized something else:
The Dell 5570 cellular modem is not beeing detected properly after a cold boot.
If I go into the BIOS under System information it will show at the end:

WiFi Device	=Qualcomm Wireless
WiGig Device	=Installed
Cellular Device	={none}
Bluetooth Device	=Installed

If I briefly start the onboard diagnostics however,
it will detect the Cellular Device on the reboot after the cancelling the diagnostics run (I cancelled it right after the display test):

WiFi Device	=Qualcomm Wireless
WiGig Device	=Installed
Cellular Device	=Dell Wireless
Bluetooth Device	=Installed

Also, when I put in the original hard drive, repeated the test and booted into Windows (I normally only have Linux on this box) the Sierra Wireless Air Card Watcher utility immediately started updating the modem with a new firmware, after which Windows also installed a new set of drivers...


So this seems like to be another UEFI Firmware bug.

 

If windows installed new firmware on the modem, maybe that will fix the error you've been seeing?


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Hi to all the owners of M4800, has any body tried a mSATA on M4800? if yes then what make, Size (GB) is it? and what sort Read/Write speed did you get? according to the manual the Optical drive interface and the mSATA are both SATA2. But the tech guy at the dell is saying it is SATA3 interface.

And also have you tried to do raid on M4800?

thanks