Flash on Pale Moon on Valve Steam Deck not working Topic is solved

[UCyborg]

You're welcome! I feel less alone now, I thought I was the only one, I wrote about my experiences here.

That issue with rendering artifacts in Flash seems exclusive to my KUbuntu 21.10 install with NVIDIA...who knows if there's any hope for it considering it's NVIDIA and that the card is 12 years old.

[UCyborg]

I don't believe you. I've yet to see Flash work normally on Linux, especially out of box. Broken OpenGL rendering, broken video decoding (hence that env var fixing the issue in some cases, though I don't know how to test it since YouTube's Flash video player is gone and I don't know any other that would make use of Flash's hardware video decoding), broken sound without going out and finding and compiling suitable libflashsupport.so to have it work normally through PipeWire / PulseAudio.

Seeing is believing. Sound also works properly, but that is harder for me to capture; I hope you can take it on trust now. I have heard that younger versions of Glibc (>2·35?) cause Flash to fail on Linux systems with Nvidia graphics cards, but that is as far as I have heard incompatibilities go. I installed it years ago, but I think I just used the terminal command on the Github, which put everything where it was meant to go. It really has worked out of the box for me, for I would not be able to reconfigure it on my own if needed.

I tried on Debian 13 installation on VMware at work and there it doesn't crash without any manual interventions. Who knows, either Debian or VMware could be the factor that it doesn't crash.

I've seen in the past where something random is broken on one distro, but works on another.

[Mæstro]

I tried on Debian 13 installation on VMware at work and there it doesn't crash without any manual interventions. Who knows, either Debian or VMware could be the factor that it doesn't crash.
I've seen in the past where something random is broken on one distro, but works on another.

I will take this as a sign Debian 13 and Flash agree in principle!
Since getting the VM to work, I told myself that I could access Flash files and archived sites through a guest instead if Flash were to fail in the host system after some future upgrade, but it seems I need not worry about that.

I only bother to look up Debian (10) support, and never rely on vague statements that specific software ‘works on Linux’.

[UCyborg]

There must be something we're not catching. Back in 2021, I did not have that problem on Manjaro, which is based on Arch Linux. Then it appeared when switching to KUbuntu. So naive assumption could have been something about Ubuntu-based, but the OP has SteamOS, which is again, based on Arch Linux.

That Debian install at work, being a poor virtual machine, doesn't have any usable VDPAU drivers, though the wrapper libvdpau1 is apparently there.