Does CapsLock annoy you? Ever wished it actually did something useful instead of SHOUTING AT PEOPLE BY ACCIDENT?
Capsper is push-to-talk voice dictation for Linux. Hold CapsLock, speak, release. Text appears wherever your cursor is. No cloud, no subscription, no Electron app phoning home. Just your GPU doing what GPUs were meant to do.
The pitch
~2 second latency between speaking and words appearing on screen. Runs entirely on your machine. Works on both X11 and Wayland. Single binary, no dependencies to manage, no Python runtime, no Docker container. You download it, run the installer, and CapsLock becomes useful for the first time in its miserable existence.
After upgrading to an NVIDIA RTX 5070 Ti (Blackwell architecture, released January 2025), WebGL stopped working in Chrome. Sites like webglreport.com showed “This browser supports WebGL 2, but it is disabled or unavailable.”
The system-level OpenGL worked fine (glxinfo showed full OpenGL 4.6 support), so the issue was Chrome-specific.
The Problem
Chrome was running with --use-gl=disabled. You can check this with:
ps aux | grep chrome | grep -oE '\-\-use-gl=[^ ]*'
The RTX 5070 Ti and driver 580.x are so new that Chrome’s GPU blocklist doesn’t recognise them, so it defaults to disabling GL entirely.
I’ve been doing some NFT research for myself, but though I would share in case one else finds some value.
30 second intro to NFTs: https://niftygateway.com/whatisanifty
In depth description of an NFT (and lots more information): https://blog.opensea.io/guides/non-fungible-tokens/#What_is_a_non-fungible_token
So the next thing to understand is that in the world of cryptocurrencies there are many different ones. Bitcoin is probably the one you have heard about but there are literally thousands: https://coinmarketcap.com/
The second biggest cryptocurrency is called Ethereum and it is also the largest market for NFTs (via https://opensea.io/ or https://niftygateway.com/)
So I had installed the latest version of OBS Studio (26.x) from the official channels but when I went to the output mode it only listed software encoding. In the logs it mentioned FFMPEG-VAAPI but wasn’t using it as any recording was using 30%-50% CPU on a low powered laptop.
In Settings -> Output change Outmode to Advanced (from Simple) then on Streaming -> Encoder change that to FFMPEG VAAPI (Recoding should just be set to use Streaming Encoder which is the default)
So I had my usual problem with screen tearing on Ubuntu 19.10 but instead of my usual switching to Metacity + Compton I wanted to try using Gnome Shell. However Gnome shell doesn’t support replacing the compositor.
First step is to allow the NVidia driver to support kernel mode setting: