Red Hat Bugzilla – Bug 981760
Unable to set wallpaper
Last modified: 2015-02-12 06:13:24 EST
Description of problem:
On older machines I am unable to set the background wallpaper of
gnome to an arbitrary file on older machines (VRAM<256 Mb) as well as
on a recent atom laptop.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Select a picture as a background wallpaper
2. Check the preview and confirm
The background wallpaper is set to some uniform tint
The background is expected to be set to the appropriate picture.
I expect that the culprit is a limit on size of textures on these machines.
[the videocards were an ATI RC410, an ATI RV370 and the standard
Intel Corporation Atom Processor D4xx/D5xx/N4xx/N5xx Integrated Graphics Controller - in this case the processor is actually an N570]
Incidentally, I have had no issues with an ATI RV635/M86 (Radeon HD3650).
Is there any workaround?
This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component.
Have you gotten this working in the mean time, by any chance? I don't really know how to help you debug this, but we should reassign the ticket to the graphics stack instead -- the gnome-backgrounds package probably has nothing to do with the issue, it just ships the .jpg files.
no: the bug is still there.
I believe it has to do with texture size, as the only backgrounds which work
are those whose size is approx. less or equal to 1920x1200 pixels.
e.g. among the standard wallpapers, bee-and-the-sunflower.jpg, diamantina.jpg and water-flower.jpg work; cherry-2.jpg or wine-in-the-morning.jpg do not.
If I manually resize an image, by downscaling it, then it appears it can be loaded.
[I tried this with wine-in-the-morning.jpg with a
convert /usr/share/backgrounds/schroedinger-cat/extras/wine-in-the-morning.jpg ~/wine-in-the-morning-resized.jpg
and then I could manage to load it]
I reckon that the proper fix would be to downscale the image before loading it when the screen resolution is low, but I do not know how manageable this might be with the current stack.
Reassigning to Mutter that draws the background. This is likely already fixed upstream with https://git.gnome.org/browse/mutter/commit/?id=15e01152da335f5a9e7617674ffa54cb1bdef957
I've seen this issue as well on a fully updated F-19 machine. I don't believe it's an issue due to memory as the machine I saw this on had 3Gb. I tried to down scale the image and it didn't have much effect, I think it might also be more related to the image format as there's one image that I can consistently set as the background on this machine and others that I can't.
Interestingly I've seen something similar of late on F-20 where the screen lock image disappears and I get a blue background.
So far, I have not seen the problem anymore on F20, at least for what concerns the desktop background.
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