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Failed to run Firefox in headless mode under Ubuntu

Anyone succeed with running Firefox in headless mode under Ubuntu? I tried: firefox --headless --safe-mode -P headless https://quan.hoabinh.vn but got this error: [1254… (read more)

Anyone succeed with running Firefox in headless mode under Ubuntu?

I tried:

firefox --headless --safe-mode -P headless https://quan.hoabinh.vn 

but got this error:

[12545] Sandbox: CanCreateUserNamespace() unshare(CLONE_NEWPID): EPERM

      • You are running in headless mode.

[GFX1-]: RenderCompositorSWGL failed mapping default framebuffer, no dt

I installed Firefox as from "https://packages.mozilla.org/apt" repo.

Open 7
Firefox Launch failure
jbr replied 6 hours ago

Firefox message

After the last update, Firefox won't open. Instead, I get this message: "Firefox is already running but is not responding. The old Firefox process must be closed to open… (read more)

After the last update, Firefox won't open. Instead, I get this message:

"Firefox is already running but is not responding. The old Firefox process must be closed to open a new window."

I have closed it within the error message but the error message comes back each time I try to open Firefox.

Please help, Deb

Open 1
Firefox Launch failure
jbr replied 5 days ago

how do i fix my firefox?

This morning I reset my PC, and upon doing so Firefox would just not work. Anytime I tried booting up firefox it would for a split second show the browser than revert to … (read more)

This morning I reset my PC, and upon doing so Firefox would just not work. Anytime I tried booting up firefox it would for a split second show the browser than revert to a screen where its just the firefox logo, where upon clicking it would become unresponsive

I've uninstalled and reinstalled twice both times completely clearing out firefox data from across my pc, i've tried to make new profiles, i've cleared out caches etc, yet anytime i try boot it up it still doesnt work

i've spent the past 6 hours just looking through fixes and still, nothing works every other browser works fine, aside from firefox

Open 1
Firefox Launch failure
amoun replied 1 week ago

Firefox 153 often fails to load pages and have to restart, and frequently get "Firefox is already running" message.

Hi all, Version 153 in general seems to be more buggy than previous. The most affected bug now is opening links in new tabs will endlessly show the loading animation in… (read more)

Hi all,

Version 153 in general seems to be more buggy than previous.

  • The most affected bug now is opening links in new tabs will endlessly show the loading animation in the favicon tab area, and the page will be blank failing to load the content.
  • No choice but to restart Firefox in order for it to function again.
  • Also, every time relaunching Firefox gives the "Firefox is already running" message pop up.
  • This started happening after updating to version 153.

Firefox 153.0.1 (32-bit) Windows 10 - 22H2

Thank you in advance

Open 1
Firefox Launch failure
jbr replied 1 week ago

for two weeks now, whenever open firefox my laptop freezes affecting all other programs

I have used firefox for 13 years now and I have never had any major issues with it. but recently I have noticed that whenever I open it on my laptop, the laptop freezes a… (read more)

I have used firefox for 13 years now and I have never had any major issues with it. but recently I have noticed that whenever I open it on my laptop, the laptop freezes and then a black screen, then a mozzila firefox crash dialog box. sometimes I am forced to hard restart the laptop then use another browser. I still want to continue using Firefox but that issue is really frustrating.


Thank you

Open 3 30
Firefox Launch failure
jbr replied 1 week ago