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XPS 13 7390 2 in 1 bluetooth keyboard and mouse lagging after 4/2020 bios update
Hi
2 Days ago, I updated my XPS 13 7390 2 in 1 with the latest bios (BIOS 1.3.1). Since then my Logitech keyboard K850 and Mouse M720 Triathlon has been experiencing lagging issues. Some times it takes like a second for the keyboard and mouse (especially the mouse) to activate when they are connected to the laptop with bluetooth. But when I connect them with wireless dongle (this keyboard and mouse support both types of connection), there is no lagging issue. This problem appears only after I have updated the bios. In fact, I just tried connecting another bluetooth mouse (Logitech M557) to the laptop, and it is also seeing the same problem. It seems like the latest BIOS is doing something strange to the bluetooth part of the machine.
David
DELL-Cares
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April 15th, 2020 15:00
Hey there! Please try the following:
Launch the Device Manager and uncheck the option Allow the computer to turn off this device to save power in the power management setting of Intel Wireless Bluetooth.
Hopefully that will stop that lagging issue you're facing.
sicchai
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April 13th, 2020 05:00
Update:
I forgot to say:
In addition to the BIOS update, I have also updated the Killer Wireless AX1650 UWD Bluetooth Driver to A05 at the same time. This is probably even more pivotal than the BIOS update.
sicchai
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April 15th, 2020 12:00
Update:
Per the request of DELL Care, I tried rolling the BIOS back to 1.1.3, and the lag was much much shorter. With 1.3.1 (the current BIOS), the lag lasts for at least 2 seconds. But with 1.1.3, there is still a lag, but it lasts for only a very short time, like between 1/10 and 1/5 of a second. So it is definitely the BIOS. I have even tried turning off both the C-State and the background panel refresh things, no differences.
mux8
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April 15th, 2020 16:00
That option does not exist on the slow ring version of Windows 10 insiders.
sicchai
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April 16th, 2020 04:00
It works! The lag is gone. Thanks.
DELL-Cares
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April 16th, 2020 04:00
Glad to hear this. Do reach back to us if you have any query. ^AM
mux8
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April 16th, 2020 09:00
Please DELL look into this. On Windows Insider Slow Ring, the option is now gone on device manager.
DELL-Jesse L
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April 16th, 2020 10:00
mux8,
Thank you we will look into this.
Dell-Jesse L
bschilli
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April 20th, 2020 11:00
Thank you! I was struggling with the exact same issue and is now resolved after making this change.
Jungle Elephant
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April 20th, 2020 15:00
hi,
you solution works. Thanks.
DELL-Jesse L
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April 22nd, 2020 04:00
mux8,
Please contact Dell Software team at 1 (800) 624-9896.
Dell-Jesse L
mux8
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April 24th, 2020 08:00
Hi Jesse I don't have the time to sit through basic troubleshooting steps on the phone. I'm quite well versed with technology and in general unless there is a specific person that want's to discuss this issue so they can fix it on their end I'm not inclined to call a generic number for troubleshooting.
I want to bring to immediate attention that the current (either BIOS or bluetooth) drivers are *incompatible* with the latest windows preview and slow ring editions. I tested this out again yesterday. After installing, the option to disable "powering off bluetooth device to save power" is no longer available. I suggest if you are able, to raise this to a high priority or we will see even more of these threads. As you can already notice, we have been seeing a thread every other day on the same problem as in this issue.
Thank you!
DELL-Jesse L
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April 24th, 2020 09:00
mux8,
This is good information. Thanks again!!!
Dell-Jesse L
DELL-Jesse L
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April 24th, 2020 09:00
Hey mux8,
Thank you for the information. I will work on getting some information and letting the engineers know about the bios.
mux8
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April 24th, 2020 09:00
Thanks very much. Again, I'm not sure if it's the BIOS or the Bluetooth driver, but there's an incompatibility somewhere along the chain with them and the upcoming Windows version.