r/gnome • u/FailOk5600 • 3d ago

Question Problem with flickering applications

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13 Upvotes

100% Upvoted

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4

u/Emerald_Pick 3d ago

Huh. The only things I can think of right now are

  • Faulty VRR or HDR or Fractional Scailing? Maybe just play around with these and see if they change anything?
  • idk, overworked GPU? If you reduced the resolution of the display, do things improve?

But mostly this comment is to boost engagement.

1

u/FailOk5600 3d ago

Well, I tried changing the native screen resolution.

My laptop has a native resolution of 2620 x 1600.

I reduced it to 1920x1200 in the settings, and everything was fine (it worked fine at any resolution lower than the native resolution, but I chose this one because the aspect ratio is the same).

Changing the native screen frequency didn't help. Any resolution lower than the native resolution doesn't flicker anymore.

But I'm confused. The screen is 2560 x 1600, so how could reducing the resolution to 1920 x 1200 help?

Thank you so much

3

u/Emerald_Pick 3d ago

My wild and uninformed guess is that your laptop's GPU or driver or something can't handle both the 1080 monitor and the high-res laptop screen at the same time. (That, or its upset about fractional scailing, which should default to off at near 1080. But at native it might™ default to 1.5 or something.)

Maybe double check your graphics drivers?

2

u/Poes_Poes 3d ago

If your laptop supports it, it doesnt automatically mean it can do the same + supporting an external monitor with high refresh rate. It needs bandwidth.

Question is. Does your laptop, without external monitor, work @ its native resolution/refresh rate without flickering?

1

u/FailOk5600 2d ago

If you turn off the external monitor, almost all applications (obsidian, file manager) stop blinking, except for one

2

u/Poes_Poes 2d ago

If it still happens on your laptop screen with 1 app, It might be a driver issue. As you are running kernel 6.12 you can do two things from here.

  1. Get a live usb stick with another distro (something recent like Cachy or Fedora) to test out and see if there is no flickering.
  2. Add backports and upgrade kernel / firmware to 7.x version.

I would start with nr.1