XPS 15 9560, firmware 1.19.2, Alert! TPM is not detected

This has not worked for me, I started having the issue after i installed the latest BIOS 1.20

Does anyone know a solution? I tried it all.

Do we know if someday there will be a fix?  

Like maybe when there's a new bios they will bother to fix this?  or is this user error so they dont care?

Currently I am just used to getting a bios error every time it comes out of sleep, and Im too beat down by desperate forum searching to try to get help for an out of warranty problem.  This thread is the only source of hope  

Just seems like Dell did it so why wont they push out a fix..how can they not

I managed to fix this on my XPS 13 9360 by installing Bios 2.12.0 and resetting the bios settings to factory settings

No change after updating to 1.21. 
reset to default doesn’t help unfortunately. 

I had the same issue even after updating to 1.21. This is how I solved it. Download 1.15.0.exe file and copied it in a usb drive. Restarted laptop with usb drive connected and press f12 when the dell logo flashes up. There is an option to flash bios and I pointed the exe file in the drive. The flashing failed but after restarting I did not get any TPM alert. One more thing I did was deactivate automatic bios update in the settings so that dell updater wont  me again!

I would not mark this thread as solved since downgrading to bios version 1.15 will result in an unsecure system. The latest bios updates have been patching some serious vulnerabilities. It is really frustrating that Dell is staying silent on this one. I will never recommend buying Dell again unfortunately. The XPS 9560 is a marketing stunt gone bad. They put together some very powerful components but unfortunately it has resulted in a never ending pool of issues. So many GSODs, power throttling (when using the dedicated graphics card making the computer garbage) and this BIOS issue have resulted in so many wasted hours of my life. @Anonymous 

I still have this problem on my XPS 15 9650 running the latest bios. It's really strange that Dell is staying silent on this one, why your programmers can't modify bios firmware by picking some changes from 1.15 to the latest version? It's really annoying for about two years without problem resolution.

Today when I got up my XPS  9650 was running full speed like crazy, rushing fan and extremely hot.  I had manually put it in sleep last night.

It seems to have woken and entered the TPM blue screen of misery that is now what I equate to Dell, and the hardware stays hot and the screen stays on.  

My other post on here has no replies. Its pretty hopeless feeling if Dell wont advise. 

Will they push out a new bios someday that's smart enough to know that my laptop never had TPM ?  Why wont they comment in this thread with all these people struggling?

1.15 is not a solution. Why don't they fix this issue? Over 2.5 years of problems with this XPS 15 9560.
I think the best solution is to recycle it already.

This work for my Dell XPS 9560, I have tried everything else but rolling the bios back from 1.21 to 1.15 worked it sad that Dell hasn't manage to fix this yet

Same problem for me, with 1.21.1 BIOS on Dell XPS 9560...

A pity...

https://www.dell.com/community/XPS/Alert-TPM-device-is-not-detected-on-Dell-XPS-15-9560-linux/m-p/7847090/highlight/true#M81829

Seems like 1.22.1 has the same issue. I'm still running 1.15.

Bios 1.15 writes the TPM issue to log, but it is still present. Subsequent BIOS updates issue a stopping alert for the issue.