Firefox Community Forum

Hi Team,

I’ve successfully built Firefox v135 from source on our internal development RISC-V64 platform running on Ubuntu 22.04 with GNOME 42.9 (Xorg & Wayland), Our RISC-V Development platform does include a GPU HW which support HW Acceleration for GNOME & other 3rd Apps (Supporting X & Wayland), and Work seamlessly without any issues.

The FireFox v135 Application (via ./mach run) starts up normally. But the major issue I'm observing is that Firefox browser is very slow and laggy, especially during search operations and video playback on YouTube I see a poor performance. Upon further check I found that the most of the work is getting done over the CPU and the utilization is quite high, which is causing the FireFox to perform poorly. I also did try to switching to "Use hardware acceleration when available" in the Mozilla FireFox Settings, but still there is no difference with or without this check and Mozilla FireFox browsing Experience is very poor.

Kindly do let me know how we can enhance and improve the overall performance of FireFox Browsing Experience on my RISC-V platform. Any Support and Help is highly appreciative!

Attached a Build Steps and Configuration used for building Mozilla FireFox v135 on my RISC-V64 platform, let us know if there is anything missed. Thank you!

**BUILD STEPS**

1. Clone the Firefox source (v135.0.1):

git clone --branch FIREFOX_135_0_1_RELEASE --single-branch --depth 1 https://github.com/mozilla-firefox/firefox.git cd firefox

2. Install required dependencies:

sudo apt-get update sudo apt-get install -y curl python3-dev libnspr4 libgtk-3-dev llvm-14 llvm-dev clang libclang-dev libx11-xcb-dev libevent-dev libdbus-glib-1-dev m4 libnspr4-dev meson

3. Install Rust:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh source $HOME/.cargo/env

4. Install Python and Rust-related tools:

pip install --upgrade pip pip install uniffi-bindgen referencing==0.29.1 cargo install cbindgen

5. Apply the RISC-V compatibility patch:

patch -Np1 -i firefox-riscv64-hack.patch

6. Create the mozconfig file with custom build options:

ac_add_options --with-app-name=firefox ac_add_options --disable-release ac_add_options --enable-hardening ac_add_options --enable-rust-simd ac_add_options --enable-linker=bfd ac_add_options --disable-bootstrap ac_add_options --enable-official-branding ac_add_options --with-branding=browser/branding/official ac_add_options --enable-update-channel=release ac_add_options --with-unsigned-addon-scopes=app,system ac_add_options --allow-addon-sideload ac_add_options --enable-default-toolkit=cairo-gtk3-wayland ac_add_options --with-system-zlib ac_add_options --disable-strip ac_add_options --disable-install-strip ac_add_options --enable-system-ffi ac_add_options --with-system-libevent ac_add_options --with-system-nspr

1. ac_add_options --with-system-nss

ac_add_options --disable-updater ac_add_options --disable-tests ac_add_options --enable-alsa ac_add_options --without-wasm-sandboxed-libraries

7. Vendor Rust dependencies:

./mach vendor rust --ignore-modified

8. Upgrade Cairo from 1.16.0 to 1.18.4:

1. Extract and build Cairo 1.18.4

tar -xvf cairo-1.18.4.tar.xz cd cairo-1.18.4 mkdir build && cd build meson .. --prefix=/usr/local ninja sudo meson install

9. Build Firefox:

cd firefox ./mach build

Regards, Saiteja.

Hi I'm wondering what people think about emails providing links for donations. If the email address is spoofed and the link is malicious were in trouble. So, assuming the email I received today was from Mozilla (and not a spoofed email address, shouldn't Mozilla ask us to visit it's webpage to make a donation rather than email us a link? Regards

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Mike Taylor

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I occasionally increase the zoom level of websites (usually forums) with Ctrl+mouse wheel if the default text size is too small. However, if I forget to set them back to 100% (Ctrl+0) before closing the tab, the next time I open that URL, it's at the former adjusted zoom level -- not 100%. Really annoying.

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Thanks.

Dear Mozilla Team,

I’ve been a loyal Firefox user for over 15 years, and it’s been my go-to browser for both personal and work-related tasks. However, recently I’ve encountered persistent issues where several websites—especially work-related ones—have stopped functioning properly. I’ve tried troubleshooting steps like clearing the cache, allowing cookies, and disabling tracking protections, but the problems persist.

Reluctantly, I switched to Google Chrome as it currently offers better stability, but it’s been hard to abandon Firefox after so many years. I truly value Mozilla’s mission and privacy-focused approach, and I’d love to return if these issues are addressed.

Could you please look into these compatibility problems? I’d appreciate any guidance or updates on fixes. Thank you for your hard work—I hope to support Firefox again soon.

Best regards, Gustavo

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Olá pessoal, bom dia, sou novo como desenvolvedor do Firefox.

Nosso sistema para loja de roupas é online e utiliza WebSocket para comunicação em tempo real entre o navegador e o servidor. Alguns usuários que abrem múltiplas abas do sistema relatam desconexões aleatórias no Firefox.

Existe algum limite de conexões WebSocket por origem/domínio ou alguma política diferente no Firefox? Sistema usado: https://erppro.com.br/sistema-para-lojas-de-roupas/.

Alguém pode me ajudar com está dúvida inicial?

Olá pessoal da comunidade Firefox!

Estamos utilizando um sistema ERP em nuvem para gestão de loja de roupas, loja de calçados e mercados, com impressão direta de cupons fiscais e etiquetas usando comandos JavaScript.

Funciona bem no Chrome, mas no Firefox alguns clientes relatam que a janela de impressão demora a abrir ou trava. O sistema ERP para lojas é o da ERPPro, veja: https://erppro.com.br/sistema-para-lojas-de-roupas/

Há alguma configuração ou recomendação específica para esse tipo de caso no Firefox?

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accessibility.blockautorefresh services.sync.prefs.sync-seen.accessibility.blockautorefresh

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I don't know what else to do.

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