1298853 - Firefox occasionally hangs on startup with the gfx testing window open

Status: RESOLVED INCOMPLETE

(Core :: Graphics, defect, P3)

Description

[Kartikaya Gupta (email:[e-mail])]

Attachment: Photo of screen

I've run into this 2 or 3 times in the past couple of weeks on my Surface Pro device. I *think* it's always happened on the first-run of Nightly after updating it. What happens is that the main window opens, but then hangs. In the alt-tab app switcher I see that there's a second window open with a red rectangle, which I believe is the window that the gfx code opens to run tests on the gfx environment. See attached photos (I couldn't figure out how to get a screenshot with the other window visible).

Comment 1

[Kartikaya Gupta (email:[e-mail])]

Attachment: Another photo of the same

Comment 2

[Mason Chang [Inactive] [:mchang]]

Do you know why the main window itself is hanging?

Comment 3

[Kartikaya Gupta (email:[e-mail])]

No idea :(

Comment 4

[Kartikaya Gupta (email:[e-mail])]

I'm still running into this.

Comment 5

[Mason Chang [Inactive] [:mchang]]

Is there anyway you can get a stack trace of what's going on when this happens?

Comment 6

[Kartikaya Gupta (email:[e-mail])]

I'm pretty sure I tried previously to attach Visual Studio when this happens and was unsuccessful. I'll try again, leaving needinfo on me. It might help if you can insert MOZ_CRASH in likely places and land them #ifdef NIGHTLY_BUILD.

Comment 7

[Virtual_ManPL [:Virtual] 🇵🇱 - (please needinfo? me - so I will see your comment/reply/question/etc.)]

I was thinking it could be related in some way to bug #1301301, but it seems like it's not.

Comment 8

[Kartikaya Gupta (email:[e-mail])]

Haven't seen this again, but seems kind of similar to what's happening on aarch64 reftests in CI