May 20, 2026
Flash of the Chatbot
Enabling Resizable Bar on RTX 3080 Vbios via GitHub
Geek hack or AI waffle? Linux gamer flips hidden RTX 3080 switch and the comments explode
TLDR: A Linux user found a way to unlock a hidden graphics card feature without using Windows, which matters because it could improve heavy AI and gaming workloads on older hardware. The comments, however, turned into a roast session, with many people arguing the guide read like chatbot output instead of a simple fix.
A Linux user pulled off the kind of stunt that makes hardware nerds clutch their keyboards: they dug a graphics card update out of a Windows-only installer, flashed it by hand, and claimed victory in turning on a hidden performance feature for an older RTX 3080. In plain English, they found a way to unlock a bigger "window" between the computer and the card’s memory, which can help with heavy workloads like running AI models across two graphics cards. The flash reportedly worked, the card survived, and a reboot was all that stood between success and proof.
But the real show was in the comments, where the community instantly split into two camps: "impressive rescue mission" versus "this is unreadable AI sludge." One of the loudest reactions was that the repo looked less like a how-to and more like someone had dumped an chatbot’s private brainstorming session onto GitHub. Critics mocked the ultra-detailed README, saying a task that used to be "run the update, reboot, done" had been transformed into a dramatic tech saga with diagrams, recovery plans, and enough assumptions to scare off normal humans.
Others were more practical than theatrical, basically saying: stop the robot novel, grab a trusted file, back up your card, and use a second GPU so you don’t turn your machine into a very expensive paperweight. The funniest subtext? The author may have successfully updated the card, but the comments were busy trying to flash the README back to factory settings.
Key Points
- •The article documents a Linux-only process for enabling Resizable BAR on an ASUS TUF RTX 3080 by extracting a VBIOS ROM from an ASUS Windows updater and flashing it with nvflash.
- •The target GPU was updated from VBIOS version 94.02.42.40.65 (AS03) to 94.02.42.40.66 (AS02), and the reported flash completed with exit code 0.
- •The documented system is a dual-GPU setup with an RTX 5080 already showing ReBAR enabled and an RTX 3080 as the ReBAR target.
- •The article explains that ReBAR enlarges the CPU-visible GPU BAR1 window from a legacy 256 MiB size to 8192 MiB on a 10 GB RTX 3080 because BAR sizes must be powers of two.
- •The article states that motherboard firmware settings are required for ReBAR to work, specifically Above 4G Decoding enabled, Re-Size BAR Support enabled, and CSM disabled.