Arch Linux

Histole

Member

Registered: 2025-08-06

Posts: 43

1080 Ti

So my 1080Ti

Linux Kernel:

Last edited by Histole (2026-08-25 05:33:09)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,536

Re: 1080 Ti

You should check the behavior w/ an uncomposited X11 WM but iirc any kind of multihead implies activation of the composition pipeline.
(You'd also get this on a single output when scaling or rotating it?)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Histole

Member

Registered: 2025-08-06

Posts: 43

Re: 1080 Ti

You should check the behavior w/ an uncomposited X11 WM but iirc any kind of multihead implies activation of the composition pipeline.
(You'd also get this on a single output when scaling or rotating it?)

So if I connect just the one display, it idles in P8. Though if I have two monitors connected it idles in P0. I had this issue on windows before I dove into Linux, and it was solved via nvidia inspector’s multi display power saver.

I could check on X11, but I think the benefits of Wayland outweigh the power savings on X11.

Last edited by Histole (2026-06-16 18:11:33)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,536

Re: 1080 Ti

The point is to confirm that this isn't just a glitch of your wayland compositor and the estimate actually that you'll not get any different behavior there

https://forums.developer.nvidia.com/t/n … /118113/20
I assume this hasn't been addressed, but users there report that lowering the refresh rate or disabling gsync allowed their GPUs to downclock (might completely depend on the generation)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Histole

Member

Registered: 2025-08-06

Posts: 43

Re: 1080 Ti

The point is to confirm that this isn't just a glitch of your wayland compositor and the estimate actually that you'll not get any different behavior there

So I haven’t gotten around to trying X11 yet, as I was working out the Ly issue. I suppose I should add that on Windows I also had a similar phenomenon, albeit it wasn’t in P0 all the time, it did occasionally drop to P8. What fixed it was using Nvidia inspector’s “multi display power saver” which forces the GPU to P8 unless an excluded application is ran. Is there anything similar on Linux?

Will report back once I figure out how to try X11.

Last edited by Histole (2025-08-09 00:25:57)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,536

Re: 1080 Ti

I should add that on Windows I also had a similar phenomenon

you've actually mentioned that
nvidia-smi allows you to set a power limit, but neither is that the performance state nor is capping this/freezing the performance necessarily great.

users there report that lowering the refresh rate or disabling gsync allowed their GPUs to downclock

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

Histole

Member

Registered: 2025-08-06

Posts: 43

Re: 1080 Ti

you've actually mentioned that

Oops yes you're right, wasn't paying attention.

users there report that lowering the refresh rate or disabling gsync allowed their GPUs to downclock

Last edited by Histole (2026-08-25 05:32:52)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,536

Re: 1080 Ti

This would be more about the crtc than the GPU (ie. the thing that needs to pump put the pixels, not the one that calculates their colors)

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc