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Created attachment 1679150[details]
Firefox rendered too large after reducing scaling
Description of problem:
I have my internal screen set to 125% scaling. When I plug an external screen for which I set scaling to 100%, overall scaling is reset to 100%.
Whenever the scaling is changed by that means, Firefox's layout doesn't seem to follow. The window borders in Gnome's overwiew are correct, also mouse clicks seem to be caught correctly – but visually you only see part of the scaled-up Firefox UI, or it only takes ⅔ of the window and the rest is black.
See screenshot for a Gnome overview after setting scaling from 100% to 125% while Firefox was open.
Version-Release number of selected component (if applicable):
75.0 but I've seen the issue since upgrade to F31.
How reproducible:
Always.
Steps to Reproduce:
1. Open Firefox on Wayland.
2. Set increase screen scaling, f.e. from 100% to 125% or 200%
3. Open Gnome's overview (by pressing Super or clicking "Activities"
Actual results:
* Firefox' UI stays scaled, and is cut off.
* Inputs seem to be accepted in the right places (clicking top right somewhere will open the menu)
Expected results:
Also the UI scales after scaling changes
Additional info:
See screenshots
Hi Martin. Thanks for getting back to me.
This morning I tried using two screens with different scales, and dragging the window between the two screens is showing the issue as well.
I tried the latest nightly with Wayland backend, and everything's fine. Following that, I tried launching my installed Firefox with a clean profile, and it's fine as well.
So it must be some profile setting that is disturbing.
I remember setting some things to ensure Firefox uses hardware acceleration on my system, which might be the cause. I'll investigate.
It seems to have been the combination of
- layers.acceleration.force-enabled
- gfx.webrender.all
that caused the issue.
I changed their defaults to fix some issues which I had with WebGL.
Thanks!
Created attachment 1679150 [details] Firefox rendered too large after reducing scaling Description of problem: I have my internal screen set to 125% scaling. When I plug an external screen for which I set scaling to 100%, overall scaling is reset to 100%. Whenever the scaling is changed by that means, Firefox's layout doesn't seem to follow. The window borders in Gnome's overwiew are correct, also mouse clicks seem to be caught correctly – but visually you only see part of the scaled-up Firefox UI, or it only takes ⅔ of the window and the rest is black. See screenshot for a Gnome overview after setting scaling from 100% to 125% while Firefox was open. Version-Release number of selected component (if applicable): 75.0 but I've seen the issue since upgrade to F31. How reproducible: Always. Steps to Reproduce: 1. Open Firefox on Wayland. 2. Set increase screen scaling, f.e. from 100% to 125% or 200% 3. Open Gnome's overview (by pressing Super or clicking "Activities" Actual results: * Firefox' UI stays scaled, and is cut off. * Inputs seem to be accepted in the right places (clicking top right somewhere will open the menu) Expected results: Also the UI scales after scaling changes Additional info: See screenshots