Ubuntu 21.10 after a while get laggy, only solution is shutdown

us flag

I know this may be too common to just post without searching, but at the same time I belive bugs like this may happen just to specific people using specific hardware.

I'm on a Lenovo Thinkpad E15 using Ubuntu 21.10 on kernel 5.11.7 (latest gives me kernel panics). This PC is on a Ryzen 7 4700 and I have 16 Gbs of Ram. It uses a Kingston SNVS500G as disk.

The problem is that after a while, it gets so laggy. There's no apparent high CPU nor Memory use, I close everything and the problem persists.

What's funny is that if I restart, the problem persists.

The only fix is to shutdown and turn it on back again.

Why could this be happening? How can I troubleshoot this?

EDIT: I upgraded to kernel 5.16.2 and it keeps happening, but maybe less prevalent than before. I recorded a video to show:

user535733 avatar
cn flag
I think you are asking the wrong question. There might be a dozen possible reasons, and a list of them --and the opinions about each possibility-- won't help you much. Were I in your position, I would edit the question to instead ask about how to troubleshoot the problem that you are encountering so you learn the actual cause(s). And, yes, you should try Seaching first -- laggy systems have been asked about before.
Matias N Goldberg avatar
vg flag
A restart not fixing the problem suggests the problem is either a bad sensor (e.g. sensor always reading +90c temp forcing the cpu to throttle) or a firmware issue (i.e. look for bios problems and if there's updates). Try seeing what the sensors are showing. Btw sometimes sensor probe (incl rgb led controller) can mess up i2c and the readings become garbage. Or maybe it's a dying/clogged fan?
Matias N Goldberg avatar
vg flag
A quick Google show throttling + firmware issue may be the problem

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