https://bugs.kde.org/show_bug.cgi?id=492752
Bug ID: 492752
Summary: Neon User Firefox hardware acceleration broken- live
image OK, install not
Classification: KDE Neon
Product: neon
Version: unspecified
Platform: Neon
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Live/Install images
Assignee: neon-b...@kde.org
Reporter: spzaku...@gmail.com
CC: j...@jriddell.org, neon-b...@kde.org
Target Milestone: ---
Created attachment 173402
--> https://bugs.kde.org/attachment.cgi?id=173402&action=edit
firefox about:support from Neon Live
SUMMARY
KDE Neon User images have different behavior around Firefox hardware
acceleration live (works) vs installed (doesn't).
STEPS TO REPRODUCE
1. Boot a Neon User live image (20240831-1334.iso & 20240905-0713.iso are ones
I've used)
2. Connect to wifi, and open Firefox.
3. Go to about:support, and scroll down to Web GL 1 Driver Renderer, and note
the driver name.
4. Install Neon to disk (I chose the replace a partition option because I have
an existing Windows install).
5. Open Firefox
6. Go to about:support, and scroll down to Web GL 1 Driver Renderer, and note
the driver name.
OBSERVED RESULT
Neon User Live image shows my Intel card, and hardware acceleration works-
confirmed by installing intel-gpu-tools, and running intel_gpu_top and
observing that Video goes above 0% usage when playing videos on Youtube.
When I install Neon from the image, and then repeat this, Firefox instead shows
me Mesa -- llvmpipe (LLVM 15.0.7, 256 bits) as the WebGL 1 Driver Renderer, and
doesn't support hardware acceleration.
EXPECTED RESULT
Firefox should work the same as it does from the live image- hardware
acceleration is supported & works, it just doesn't for unknown reasons once you
install KDE Neon.
SOFTWARE/OS VERSIONS
Operating System: KDE neon 6.0
KDE Plasma Version: 6.1.4
KDE Frameworks Version: 6.5.0
Qt Version: 6.7.2
Kernel Version: 6.8.0-40-generic (64-bit)
Graphics Platform: Wayland
Processors: 4 × Intel® Core™ i5-6200U CPU @ 2.30GHz
Memory: 7.6 GiB of RAM
Graphics Processor: Mesa Intel® HD Graphics 520, AMD Radeon M430 secondary in
the laptop
ADDITIONAL INFORMATION
Lenovo Flex 4-1470 laptop
Tested with neon-user-20240831-1334.iso & neon-user-20240905-0713.iso.
I have installed enhance-h264ify, and switched just h264 & VP8 on (which
doesn't seem to do much, because YouTube still offers AV1).
I've attached the output of Firefox about:support from live & installed.
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