2011806 - macOS GPU process fails to launch on artifact builds

Status: NEW

(Firefox Build System :: General, defect, P1)

Description

[Haik Aftandilian [:haik]]

On macOS artifact builds, the new GPU process fails to launch causing fallback to software webrender. This has the same root cause as bug 1950310 where the artifact binary branding doesn't match the repo branding.

$ ./mach run
[Parent 46284, IPC I/O Parent] WARNING: Failed to launch gpu subprocess @posix_spawnp (Error:0): file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp:825
[Parent 46284, IPC I/O Parent] WARNING: Failed to launch gpu subprocess @posix_spawnp (Error:0): file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp:825
[Parent 46284, IPC I/O Parent] WARNING: Failed to launch gpu subprocess @posix_spawnp (Error:0): file /builds/worker/checkouts/gecko/ipc/glue/GeckoChildProcessHost.cpp:825
Crash Annotation GraphicsCriticalError: |[0][GFX1-]: Fallback WR to SW-WR (t=0.715832) [GFX1-]: Fallback WR to SW-WR
Crash Annotation GraphicsCriticalError: |[0][GFX1-]: Fallback WR to SW-WR (t=0.715832) |[1][GFX1-]: Failed to launch GPU process after 3 attempts (t=0.715855) [GFX1-]: Failed to launch GPU process after 3 attempts

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

Set release status flags based on info from the regressing bug 1827747

Comment 3

[Henrik Skupin [:whimboo][⌚️UTC+1]]

A workaround for now to at least have a GPU process with artifact builds on macOS is to set layers.gpu-process-executable.enabled to false.

Comment 4

[Haik Aftandilian [:haik]]

Another workaround for mozilla-central artifact builds is to use official nightly branding in your mozconfig.

ac_add_options --enable-artifact-builds
ac_add_options --with-branding=browser/branding/nightly

Comment 5

[BugBot [:suhaib / :marco/ :calixte]]

The severity field is not set for this bug.
:ahochheiden, could you have a look please?

For more information, please visit BugBot documentation.

Comment 6

[Haik Aftandilian [:haik]]

This doesn't affect users, but is important to fix for developers testing Firefox using artifact builds. I'm working on a fix.

Comment 7

[Henrik Skupin [:whimboo][⌚️UTC+1]]

Hi Haik. I want to ask if you may have an update for this bug. Thanks!

Comment 8

[Haik Aftandilian [:haik]]

(In reply to Henrik Skupin [:whimboo][⌚️UTC+1] from comment #7)

Hi Haik. I want to ask if you may have an update for this bug. Thanks!

No progress to report right now. I have a WIP patch and hope to get it posted for review within the next 1 to 2 weeks. Sorry for the delay.