Firefox 技術支援討論區

I've been searching for a way to hide the tab bar and reclaim that space. Some sources on the web set to change some settings in about:config and edit userChrome.css, but this did not work. This question links to an add-on to do it, but the link is broken:

https://support.mozilla.org/en-US/questions/1331617

I want to print 1 page of a pdf document from the web. I want to print 2 pages per sheet. This works when I print the first sheet on the left side, but I can't print 1 page to the right side. There is no 'right to left' option. Does anyone have a work around? (If I use the 'print using system dialog' option, the orientation of the second page is wrong. ie while the left page is correctly printed as an A5 portrait on the left half of my A4 sheet, the right half prints as an A6 sheet rotated 90 deg. The system is ubuntu 20.04.) The documents I'm concerned with are bank statements which I shall not past!! I attach another random example. Left page printed directly from Firefox, right page using system dialog.

I am working on a new computer with Kubuntu and have FF installed via .deb.

On my previous computer, I could drag files from the downloads dropdown (eg download a file and then drag it into gmail as an attachment).

Now this is not possible. Instead, I need to go to the downloads folder in order to drag and drop a file. An extra step and rather annoying.

The problem is persists in Safe Mode.

Is there any way to get the old functionality back?

Cuando maniobro un poco con Google Maps (acercar o alejar el mapa, sobre todo, pero también simplemente moviéndolo) se me cuelga; no Firefox: todo el sistema, tengo que reinicializar la máquina, porque no me funcionan ni el ratón, ni el teclado. Y eso me ocurre desde hace mucho tiempo -quizá dos o tres años-, no es de ahora.

Mantengo siempre actualizado el sistema operativo (Linux, ahora Mint, pero hasta hace un año fue Ubuntu; si bien Mint está basado en Ubuntu) y Firefox. Ya no sé qué hacer: me resisto sustituir Firefox por Chrome; llevo muchos años, prácticamente desde que existe, usando Firefox y siempre me ha dado un resultado estupendo, pero esto de Google Maps me amarga la existencia. He intentado utilizar Open Street Map, pero ni de lejos tiene la funcionalidad de Google Maps.

¿A alguien más le sucede esto? ¿Alguna solución?

In case user network namespace are disabled on linux, fork return ENOSPC, as the user network namespaces are exhausted (as the limit is set to 0 [1,2]).

It would be great if there would be a work around for such a situation that user network namespaces are disabled. It would be even better if firefox could handle that situation gracefully and run without `CLONE_NEWNET` automatically.

The output is:

``` [Parent 5699, IPC Launch] WARNING: fork() failed: No space left on device: file /builddir/build/BUILD/firefox-112.0.2/ipc/chromium/src/base/process_util_linux.cc:273 [Parent 5699, IPC I/O Parent] WARNING: Failed to launch tab subprocess: file /builddir/build/BUILD/firefox-112.0.2/ipc/glue/GeckoChildProcessHost.cpp:800 ``` Note that " No space left on device" is wrong, it is about the limit in terms of user network namespaces.

Best, David

[1] https://apptainer.org/docs/admin/main/user_namespace.html#disabling-network-namespaces [2] https://docs.mpcdf.mpg.de/faq/hpc_software.html#why-do-certain-gui-applications-not-work-any-more-on-the-login-nodes-of-hpc-clusters-what-are-the-alternatives

I use Firefox on Ubuntu 22.04, and my system has 16GB RAM. I have been facing this problem of frequent crashes for the past few months. By crash, I mean not Firefox alone, but the entire system. I use several apps and run several processes that require great compute resources, often simultaneously. I have narrowed the cause of frequent system crashes to Firefox alone; the system rarely crashes when I use other resource-heavy apps. Due to this, I have to restart my system several times a day.

Before this problem arose, I would use multiple tabs (including YouTube, often 10+, close to 20) and multiple windows (2+). Such usage very rarely caused crashes, which is why it is surprising that Firefox now causes the entire system to simply hang sometimes with as low as 3-4 tabs.

I have disabled Hardware Acceleration, refreshed Firefox, even tried disabling WebGL. I also tested it after removing all add-ons, but it still didn't help (I use only 2 add-ons: a simple wide-spectrum ad-blocker and an EPUB reader). Even in troubleshoot mode, Firefox will cause my system to heat up, although it takes some more effort to crash in this case. I use one of the standard themes, so it could not have been the problem.

Many people report Firefox crashes, but in my case, Firefox causes my entire system to crash. How do I fix this issue? Thank you in advance.

After I log into my account on citi.com, I end up on https://online.citi.com/US/ag/dashboard. Even after the page is finished loading, and with a new blank profile, the CPU usage is very high. I ran it through the profiler for a few seconds and this is what it shows: https://share.firefox.dev/3MpVQi7 I didn't include the following since it's online banking and didn't want to risk exposing anything, but if any of these need to be provided let me know: Include hidden threads Include hidden time range Include screenshots Include resource URLs and paths Include extension information

Can you tell what's causing the high CPU usage and how to stop it?

Thanks

Hi,

I'm trying to configure equipment on my local network. Some of the equipment does NOT support https. Firefox continuously changes the address http://192.168.xxx.xxx to https://192.168.xxx.xxx, and the connection fails!

I have tried the various options in HTTP Only Mode, including entering Exceptions. I have also temporarily changed network.trr.mode from 5 to 1 (and 0), but nothing is working!

What can I do?

Thanking you Pedro

When I print to a PDF file, Firefox changes internal links (#go-there) to full external links (either https://the.website.tld/paper.html#go-there or file://home/me/paper.html#go-there).

This is obviously wrong, since the links are internal to the document.

How to I change this behavior?

Thanks.