1560776 - Pixelated/garbage window contents after snapping window in GNOME

Status: RESOLVED INVALID

(Core :: Graphics: WebRender, defect, P3)

Description

[Asif Youssuff]

Attachment: Screenshot from 2019-06-23 06-59-44.png

Steps to reproduce:

1. Login to a Wayland session of GNOME
2. Start Firefox
3. Use Windows+left or right to snap window

What happens:

Window becomes pixelated

Expected result:

Window contents are readable.

Firefox is running under XWayland, not Wayland.

24:04.38 INFO: No more inbound revisions, bisection finished.
24:04.38 INFO: Last good revision: d4f9f1628d1f5fe3a5f461c760a0a7eac5027171
24:04.38 INFO: First bad revision: 757d5565859254a998fb14c73ebd403648345638
24:04.38 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=d4f9f1628d1f5fe3a5f461c760a0a7eac5027171&tochange=757d5565859254a998fb14c73ebd403648345638

Comment 1

[Martin Stránský [:stransky] (ni? me)]

Wayland backend is recently disabled in nighly, see Bug 1560545. Looks like you switched to X11 Firefox version which is broken. This looks like a problem with HW acceleration/GFX drivers, can you try to disable webrender/gl compositor? Thanks.

Comment 2

[Asif Youssuff]

I don't see the corruption if I disable WebRender.

Comment 3

[Martin Stránský [:stransky] (ni? me)]

Can you attach your about:support please? Thanks.

Comment 4

[Asif Youssuff]

Attachment: broken-wr-wayland-about-support.txt

about:support attached.

Comment 5

[Asif Youssuff]

Marking this invalid; I downgraded my alpha graphics drivers from https://launchpad.net/~oibaf/+archive/ubuntu/graphics-drivers and the issue isn't reproducible.