A515-57-56UV-CPU fan not working and the temp. quickly shot up to 90c° to 94c° in about 15-20 secs.

bako6212

I don't for how long this has been going on, but I've noticed for at least several months this notebook has been running very hot… from 60c° to 90c° with just using a browser with a high number of tabs open but not running any CPU intensive apps. The system has been locking up (freezing) more and more often and when this happens it's always because the system is very hot. I've never been able to hear the fan running but I thought maybe this is just due to being very quiet but now I became suspicious that it's even running at all so I tested is as follows…

The notebook is propped up 1 inch off the desk and I placed my cell phone under it below the heat vents to record the fan noise during stress testing. With nothing much running and near zero CPU load the system was at 60c° degrees. I then ran the GTKStressTesting app to load the CPU at 100% and observed the temp quickly shot up to 90c° to 94c° in about 15-20 seconds.

The recording from my phone had no audible fan noise whatsoever, so I think the fan is not turning on. Or if the two fans are turning on (I think unlikely) they are turning so slow as to produce NO sound. This isn't possible right???

SYSTEM CONFIG follows (detailed config can be found here):

running Ubuntu based Pop_OS (not Windows).

A515-57-56UV (P/N NX.K3KAA.002)
Core i5-1235U config
Insyde BIOS V1.04 02/17/2022


I installed (32GB RAM stick, 2TB gen4 NVme SSD) in December 2023
and it's been working without problems for more than a year.

Corsair Vengence CMSX32GX4M1A3200C22 1x32GB SODIMM DDR4 3200MT/s
(the other RAM slot is empty for now until I buy another for 64GB total)

Lexar NM790 2TB NVMe PCIe gen4 (slot #2)
SK Hynix HFM512GD3JX016N 512GB NVMe PCIe gen3 in slot #1 (present when I bought the notebook)

[Edited the topic title to include the topic issue.]

bako6212

For another example, as I write this I have only my Vivaldi browser running with all background tabs hibernated and all CPU cores at around 5% or less and the temperature is about 60c degrees.
That's pretty hot for almost nothing running on a Core i5-1235u isn't it?
This CPU has a TDP rating of only 15 watts (typical) to 55 watts max.

If i start using the huge number of browser tabs eventually the temp will climb up to around 90c which is when the system will lock up (randomly over the course of days).