Razer Blade Stealth 2016 (7500U) issues w/ Caldigit TS3 Plus
I've been having loads of issues with this particular laptop and its TB3 connection. Right now that laptop is used by someone in my household as a workstation due to the current world situation, and I have relocated a TS3 Plus as its dock charger. I have noticed that this laptop has specific issues when it connects to a Caldigit TS3 Plus when using DCH drivers - Essentially the Thunderbolt link is stuck in a connect/disconnect loop. I managed to resolve those by switching to the Legacy drivers (Non DCH) for this laptop....
However, these issues resurface when the laptop is not fully charged. Could it be that there is a potential issue with the Power Delivery of this laptop? Or could it be that it is generating a lot of heat for the circuitry? I'm planning on getting some thermal pads to connect the laptop case to this "daughter board" where the USB-C/USB-A is. Anyone else here with any ideas on how to resolve this? Out of options at the moment!
@teltersat2, From my own experience with this laptop, the problem is that it is charged through the TB3 port. When the charge of the battery is well below 95%, this leads to the connect/disconnect loop that you observe, probably because the TB3 link cannot handle at the same time heavy charge load and connection through the TB3 port. However, when the laptop is permanently connected to the dock and the battery has been fully charged, this connect/disconnect loop no longer happens, eventhough the battery start charging (i.e below 95%) when using the computer.
@ghislain4 - thanks for the note! maybe it's due to the thermals, I thought it would be CPU related and replaced the thermal paste, but to my surprise I saw the ports in a separate daughter board... since I want to replace the killer wireless card as it has a poor connection, I will get some thermal pads to dissipate the heat from that section to the actual laptop case. Maybe that'll improve this situation (or at least make the laptop a bit cooler overall) - Also I've noticed that it has no fan controls, they do ramp up, but are controlled exclusively by the processor's thermals, that's something very unique as I have never seen a laptop with that configuration.
So I did a bunch of troubleshooting, and it may be that there is significant EMI in the short cable from the TS3 dock. I added some ferrite beads to both the ends of the cable, and I haven't had any connectivity issues so far. Will see what happens in the future. (Perhaps a long active cable would actually reduce the EMI... but not willing to put much more effort into this problem )
PS: I also added a thermal pad between the case and the thunderbolt port on the laptop before, and that was not the problem at the end...
I have been using the same laptop (Blade Stealth 7500u), and dock (TS3 plus) for over a year now and have struggled with the setup not functioning with the laptop below 90% battery. Before I go out and buy ferrite beads to attach to my thunderbolt cable, did the beads stop the connecting/disconnecting cycle and allow you to charge/use the laptop with the dock at any percentage ??
@anonamoose1738, I have not logged in here for a long time!
To answer your question: The beads did not work! After additional troubleshooting I discovered that the TB3 side of the board gets hot enough and then starts glitching out. The temperature rises due to the PD portion of the USB-C when it's charging. I added thermal pads between the board and the case to see if this would alleviate the issue but no dice yet. All I know is that it has to do with the thermals so far. My next experiment will be to use the laptop with the case completely open and see if cooling this area directly has some sort of effect - perhaps adding some heatsinks there would help too?
I will update once I discover more about this!