Dell xps 9500 sometimes does not charge

are there any important updates (especially from Dell) regarding this issue? Since all the proposed solutions seem to not work, or work for a while.
My own laptop hadn't shown the restart problem since December, but yesterday it happened 5 times in one day, without any changes in usage.

Also, those who have restart issues are also having charging problems, right?
There are at least 3 other open threads that I believe should be merged, as I think the issues are the same for everyone.

https://www.dell.com/community/en/conversations/xps/xps-15-9500-constant-reboot/647f8f1bf4ccf8a8de018625?page=3

https://www.dell.com/community/en/conversations/xps/xps-15-9500-plugged-in-but-will-not-recognize-it-is-charging/647f9496f4ccf8a8de6e4213?page=8

https://www.dell.com/community/en/conversations/xps/xps-15-9500-not-charging/6696a17084a7860c8e48616e?commentId=67c8b8150c7c5659ad1d1a51

Please take a moment to browse through the forum. There are so many people facing the same or similar issues, and it seems there is still no solution (at least for me). What a poorly designed system the XPS 15 9500 is. I’m really frustrated, especially considering how much I paid for it and the high expectations I had for Dell, once known as the kings of solid systems.

(There is already BIOS 1.34 out there, but this doesn't help either)

@askatout​

thanks. i saw some people have the same problem. so boring for a high end laptop.

...even a motherboard replacement (three times!) under Dell warranty didn’t help...:

https://www.dell.com/community/en/conversations/xps/xps-15-9500-reboot-charge-issues-thread/67cc0a4a056cdb3737c6e168

https://www.dell.com/community/en/conversations/xps/xps-15-9500-random-shutdowns-and-not-recognizing-it-is-plugged-in-not-charging/65fb80696f77eb5fca247538

(and it is not OS related, I have it under Linux and under Windows)

I think the most interesting answer I read so far is from this reddit thread:

https://www.reddit.com/r/Dell/comments/td3kcy/xps_15_9500_doesnt_charge_randomly_reboots/

"Once your machine have the following symptoms, it is related to the WiFi chip firmware issue against Dell's ACPI parameter inside the BIOS, probably Qualcomm Killer QCA6390 (branded as AX500S), not Intel Killer edition.

1. Machines wake up after S3 / suspend, no matter it is triggered by Windows timer or user operations.

2. Machines is idle too long and the WIFI tries to draw huge power suddenly.

You will see an error log inside BIOS stating "Power Off - ASF2 force off". Then, the power led blinks with error color code (orange) and the mainboard refuses to charge the battery from AC adapter. I have seen many cases of replacing big battery, AC adapter, same Qualcomm edition mainboard and no improvement.

It is neither the big battery, CMOS cell (no such thing on 9500), nor AC adapter problem, nor overheat. Don't be mislead. How come a cool wake up machine got heat?  If you play 3D game and the keyboard is hot, such problem disappear. This power failure is caused by WIFI setting in BIOS ACPI table.

You guys may see a yellow exclamation mark on Windows battery and BIOS Diag said no charger is detected. It is because the system board blocks the charging once she thinks there is a power problem.

How to make the battery charge again?Unplug the AC adapter, boot Windows with battery only. Then the power failure lock mechanism will be cleared on the mainboard. Then you can plug the AC adapter again and do charging. However, power management problem will occur again some time later.

I asked Dell Support to fix it many times but they rejected my requests.  They want me to prove and provide solution to them, work at free. Very non-sense.

The recent revision of BIOS like v1.31 make the problem worse, more frequent. They tried to change some setting but fail.

You have three choices to workaround.

1. Ask Dell to replace mainboard with an Intel Killer edition. The Intel one is newer because Intel acquired Killer that year and no more Qualcomm chip is purchased, resulting in bad support.

2. Disable Qualcomm WiFi inside BIOS, but not Qualcomm Bluetooth. Such device IRQ does not exist and then Windows won't bother it. It is transparent to Windows. (Although Bluetooth and WiFi are on the same QCA6390 chip, they are in different bus type control interface. The BT part has no problem in ACPI table). The, you have to buy a stand alone USB WiFi instead :(

3.Keep pushing Dell to fix it. Actually, I have asked Qualcomm before. She said she has delivered firmware update to vendors (customers) regularly but Dell refused to adopt and release.

P.S. This Qualcomm WIFI power management issue doe not only occur on XPS 15 9500. All XPS series with such design also suffer. Similar power management issue is also happened on Asus laptops but her victim is Mediatek WIFI chips. (Yes, Asus finally fixed it by effort in BIOS/firmware)"

@askatout​

So can I replace the wifi card? Have you tried it?

@Hoanganh.xps9500 No, I just read it 30 minutes ago. I'm unsure whether I want to try this. I prefer to hope and wait for Dell to release something that optimizes what seems to be a malfunctioning power management system or something similar...

@askatout 

Thanks. Hope Dell will fix it. It's so annoying having to turn off the computer to charge it.

@Fabrizio_xps Did you delete your post? What happened, I cannot find it again? Would be very happy if you could repost at least your collection of links?

@askatout​ No, it's probably someone from Dell who deleted it. I think.

Some sort of censorship? If so, it's ridiculous.

Wow, really?! I can't believe it.

They deleted my thread.
Is this the best Dell can do to solve a problem?

Someone has really deleted my post??

@DELL-FAQ  @DELL-Chris M 

Someone has really deleted my post??

I see three identical replies with time stamps 1:17, 1:19, 1:20. That is considered spamming which is why the AI pulled them. I have brought back the 1:17. No, we are not going to merge the three threads.