
One month on CachyOS: down to two issues, WoW freezing my desktop on full VRAM and Corsair Scimitar side buttons randomly dying
Moved from Windows 11 to CachyOS about a month ago, no regrets. Work setup is done and both my games run through Proton: PoE2 on the Vulkan renderer, WoW through Steam. Fun fact: WoW actually runs about 10 FPS higher than it did on Windows on every settings preset. I was ready to accept up to a 10 FPS loss from the compatibility layer, not gain one. Big + there.
Two quirks remain and advice on either is appreciated.
1. WoW freezes my entire desktop when it fills my VRAM
Laptop RTX 5060, 8 GB VRAM. When WoW fills it up, not just the game but the whole UI freezes and I have to hold the power button. I know NVIDIA on Linux can't offload VRAM into RAM.
On Windows I always played maxed out and never watched VRAM, so I don't know if the game legitimately uses all 8 GB or if something in the compatibility layer is leaking.
My workaround: a watchdog service that polls free VRAM and warns me when headroom gets low, giving me time to lower settings or move out of danger. If it keeps dropping past a second threshold for 3 consecutive readings, it SIGTERMs the game.
Question: is it normal for WoW under Proton to fill 8 GB, and is there a better way to handle VRAM exhaustion than a watchdog?
2. Corsair Scimitar Elite Wireless SE: 12 side buttons randomly stop working
Left click, right click and scroll keep working, only the side buttons die. Unplug/replug fixes it.
The mouse has onboard memory, which is exactly why I bought it. Since iCUE doesn't ship for Linux, I set up a light Windows VM for it, and I've already factory reset the firmware and rewritten my colors and macros to onboard memory twice. Didn't help.
I've only seen it happen in game since that's the only place I use those buttons, and I replug immediately because it tends to happen when I can't afford dead buttons, so I haven't tested whether they come back after closing the game. I've also had click-through issues in windowed fullscreen (clicks landing in Battle.net and minimizing the game), but if the inputs were going to another window I'd expect nothing to register, not just the side buttons.
Neither of these is a dealbreaker honestly since I am a casual gamer. Everything else is set up exactly how I want it. Any pointers welcome.