On Tue, 08 Apr 2025 10:37:39 +1000 Geoff <unit...@bigpond.com> wrote:
Package: firefox
Version: 137.0-1
Followup-For: Bug #1101967
X-Debbugs-Cc: unit...@bigpond.com
Hi, I have the exact problem described. How do you disable "webrender material
acceleration" actually?
I've tried turning off "Use hardware acceleration when available" under
advanced preferences and also set gfx.webrender.software to true and restarted the
browser but still have the issue.
Thanks.
-- System Information:
Debian Release: trixie/sid
APT prefers unstable
APT policy: (700, 'unstable'), (650, 'testing'), (600, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.13-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages firefox depends on:
ii debianutils 5.21
ii fontconfig 2.15.0-2.2
ii libasound2t64 1.2.13-1+b1
ii libatk1.0-0t64 2.56.1-2
ii libc6 2.41-6
ii libcairo-gobject2 1.18.4-1+b1
ii libcairo2 1.18.4-1+b1
ii libdbus-1-3 1.16.2-2
ii libevent-2.1-7t64 2.1.12-stable-10+b1
ii libffi8 3.4.7-1
ii libfontconfig1 2.15.0-2.2
ii libfreetype6 2.13.3+dfsg-1
ii libgcc-s1 14.2.0-19
ii libgdk-pixbuf-2.0-0 2.42.12+dfsg-2
ii libglib2.0-0t64 2.84.1-1
ii libgtk-3-0t64 3.24.49-3
ii libnspr4 2:4.36-1
ii libnss3 2:3.110-1
ii libpango-1.0-0 1.56.3-1
ii libstdc++6 14.2.0-19
ii libvpx9 1.15.0-2
ii libx11-6 2:1.8.12-1
ii libx11-xcb1 2:1.8.12-1
ii libxcb-shm0 1.17.0-2+b1
ii libxcb1 1.17.0-2+b1
ii libxcomposite1 1:0.4.6-1
ii libxdamage1 1:1.1.6-1+b2
ii libxext6 2:1.3.4-1+b3
ii libxfixes3 1:6.0.0-2+b4
ii libxrandr2 2:1.5.4-1+b3
ii procps 2:4.0.4-7
ii zlib1g 1:1.3.dfsg+really1.3.1-1+b1
Versions of packages firefox recommends:
ii libavcodec61 7:7.1.1-1+b1
Hello, there are several settings involved, the "use recommended
performance settings" and "use hardware acceleration when available"
from the general settings page are a start. On Linux most of hardware
acceleration is blacklisted anyway, so those settings won't do much.
If you want more fine-grained options you need to open the
"about:config" advanced settings page, then filter for "webrender".
"gfx.webrender.all" and "gfx.webrender.compositor" will turn hardware
acceleration IF your hardware and software (mesa) are not blacklisted.
If you want to enable hardware acceleration anyway, to test it at your
own risk, then flip "gfx.webrender.compositor.force-enabled" to true,
and "gfx.webrender.software" to false.
Conversely if you want to force software rendering turn everything to
false, and "gfx.webrender.software" to true.
You need to restart Firefox after making any change.
I am only talking about webrender here, not to be confused with webgl
acceleration which can be enabled only on Firefox development version
AFAIK, and is very unstable.
Hope it helps.
