1640651 - [Wayland] Autoscroll icon appears in the top-left corner (and sometimes Nightly even crashes)

Status: RESOLVED DUPLICATE of bug 1661192

(Core :: Widget: Gtk, defect, P2)

Description

[Darkspirit]

Attachment: Bildschirmvideo von 25.05.2020 16:10:39.webm

Gnome Wayland, Debian Testing, Macbook Pro Early 2015, Intel Iris 6100 (Broadwell GT3), 2560x1600, 200% scale
mutter 3.36.2-1
libgtk-3-0 3.24.20-1

I wanted to test if I'm still not able to reproduce bug 1638084 on Debian Testing (I was only able to reproduce it on Ubuntu), but now I'm able to.

With gfx.webrender.max-partial-present-rects enabled (-1): bp-effcb281-bf80-47e2-9064-b42340200525
With partial present disabled (0): bp-7a3a328c-515b-4641-9a73-2ded10200525

I wanted to confirm the regression range of bug 1638084, but got a different one.
I noticed that bug 1637948 also changed the position of my autoscroll icon:

Bad is when I was able to reproduce a crash.
MOZ_ENABLE_WAYLAND=1 mozregression --good 2020-05-05 --bad 2020-05-25 --pref gfx.webrender.all:true general.autoScroll:true -a https://bugzilla.mozilla.org/show_bug.cgi?id=1638084

13:17.36 INFO: Last good revision: a9d6489a6a67605346aa6c7a6c13654d7483f884
13:17.36 INFO: First bad revision: cf925d06654e7463519ecfb0e5f0bb3ed69de039
13:17.36 INFO: Pushlog:
https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=a9d6489a6a67605346aa6c7a6c13654d7483f884&tochange=cf925d06654e7463519ecfb0e5f0bb3ed69de039

cf925d06654e7463519ecfb0e5f0bb3ed69de039 Jan Horak — Bug 1637948 Don't resize popup on hidpi when not needed r=stransky

Screencast (Ctrl+Alt+Shift+R):
first bad: MOZ_ENABLE_WAYLAND=1 mozregression --repo autoland --launch cf925d06654e7463519ecfb0e5f0bb3ed69de039 --pref gfx.webrender.all:true general.autoScroll:true -a https://bugzilla.mozilla.org/show_bug.cgi?id=1638084

Autoscroll icon appears in the top-left corner of the window with a delay up to 2 seconds, if Nightly hasn't crashed before.

last good: MOZ_ENABLE_WAYLAND=1 mozregression --repo autoland --launch a9d6489a6a67605346aa6c7a6c13654d7483f884 --pref gfx.webrender.all:true general.autoScroll:true -a https://bugzilla.mozilla.org/show_bug.cgi?id=1638084

Autoscroll icon appears top-left near my cursor.

Comment 1

[Darkspirit]

My main profile has gfx.webrender.panic-on-gl-error;true.

Comment 2

[Darkspirit]

Wrongly positioned on Ubuntu 20.04, too.
HP Pavilion Power 580-023w (desktop), integrated Intel HD Graphics 630 (KBL GT2), 2560x1440, 100%
mutter 3.36.1-3ubuntu3
libgtk-3-0:amd64 3.24.18-1ubuntu1

Comment 3

[Darkspirit]

(In reply to Jan Andre Ikenmeyer [:darkspirit] from comment #0)

With partial present disabled (0): bp-7a3a328c-515b-4641-9a73-2ded10200525

This one has:

GraphicsCriticalError |[0][GFX1-]: window is null (t=8.89703) |[1][GFX1-]: Failed to create EGLSurface (t=8.89707) |[2][GFX1-]: We don't have EGLSurface to draw into. Called too early? (t=8.89735) |[3][GFX1-]: We don't have EGLSurface to draw into. Called too early? (t=8.90555) |[4][GFX1-]: Compositors might be mixed (5,2) (t=8.94609)

This crash is clearly bug 1638084.

Comment 4

[dano.kutka]

Hello, I am getting sometimes this crash https://crash-stats.mozilla.org/signature/?product=Firefox&signature=libEGL_mesa.so.0%400x229fd after clicking middle button. I am not sure if it is related, but I hope it helps. My report is from 7.6.

Comment 6

[Christian Stadelmann]

Same issue here. Also, I see related crashes too.

Comment 7

[Christian Stadelmann]

Additional note: I see this without webrender and with widget.wayland_vsync.enabled=false, but on GNOME/Wayland.

Comment 8

[Gabriele Svelto [:gsvelto]]

Added a signature for the same crash.