Setup guides and tooling for two common Linux laptop problems:

1. Running Roblox on Linux Mint via Sober
2. Broadcom STA WiFi driver (broadcom-sta-dkms) failing to build against kernels 6.15+

Sober is a native Linux Roblox client that runs the Android version of Roblox as a Flatpak — no Wine or Bottles required.

# Ensure Flatpak and Flathub are configured
sudo apt install flatpak -y
flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo

# Install Sober
flatpak install flathub org.vinegarhq.Sober

bash scripts/install-shortcut.sh

This creates entries in both ~/.local/share/applications/ and ~/Desktop/. If the desktop icon shows a question mark, right-click it and choose Allow Launching.

On first run, Sober initialises and then presents a settings screen before downloading the Roblox APK.

Graphics backend:

• Use Vulkan on Intel Iris Xe or newer integrated graphics
• Use OpenGL on older Intel iGPU generations (Haswell/HD Graphics and earlier) — Vulkan support is incomplete on these

Behaviour settings:

After configuration, Sober downloads the Roblox APK and shows the login screen.

~/.var/app/org.vinegarhq.Sober/config/sober/config.json — edit via the Sober Settings UI (right-click the app icon) rather than by hand. The renderer (use_opengl) and graphics_optimization_mode are the most relevant settings for performance tuning.

Roblox's camera uses raw mouse input and ignores OS-level speed settings. To adjust camera speed, open the in-game menu (Escape) → Settings → Camera Sensitivity.

broadcom-sta-dkms (version 6.30.223.271) was last updated in 2015 and fails to build against kernels 6.15 and newer. The patch script in this repo fixes the four breaking changes.

Full root-cause analysis and diffs are in docs/broadcom-sta-kernel-patches.md.

Install the package first, then run the patch script:

sudo apt install broadcom-sta-dkms
sudo bash scripts/patch-broadcom-sta.sh

The Python script (scripts/patch-broadcom-sta.py) applies targeted string replacements to the three affected files under /usr/src/broadcom-sta-6.30.223.271/ and syncs them to the DKMS build directory if it exists. It is idempotent — safe to re-run.

Important: Reinstalling broadcom-sta-dkms from apt overwrites the patched source. Re-run the patch script any time the package is reinstalled or upgraded.

sudo dkms remove broadcom-sta/6.30.223.271 --all
sudo dkms add /usr/src/broadcom-sta-6.30.223.271
sudo dkms build broadcom-sta/6.30.223.271 -k "$(uname -r)"
sudo dkms install broadcom-sta/6.30.223.271 -k "$(uname -r)"

If dpkg was interrupted by the original build failure:

sudo dpkg --configure -a

When a new kernel breaks the build, check the DKMS log first:

sudo cat /var/lib/dkms/broadcom-sta/6.30.223.271/build/make.log

Common errors and their meaning:

To check what signatures the current kernel expects:

# Kernel's expected callback signatures
grep -A2 "set_wiphy_params\|set_tx_power\|get_tx_power" \
  /usr/src/linux-headers-$(uname -r)/include/net/cfg80211.h

# Driver's current signatures
grep -n "set_wiphy_params\|set_tx_power\|get_tx_power" \
  /usr/src/broadcom-sta-6.30.223.271/src/wl/sys/wl_cfg80211_hybrid.c

# Check whether EXTRA_CFLAGS still exists in kbuild
grep "EXTRA_CFLAGS" /usr/src/linux-headers-$(uname -r)/scripts/Makefile.lib
# Empty output = it's gone; use ccflags-y

docs/
  RobloxLinuxInstall.md          Full Roblox installation walkthrough
  broadcom-sta-kernel-patches.md Root-cause analysis and patch reference
scripts/
  install-shortcut.sh            Creates Roblox desktop and launcher entries
  startRoblox.sh                 Launches Sober directly from the terminal
  patch-broadcom-sta.sh          Root-check wrapper for the Python patcher
  patch-broadcom-sta.py          Applies all broadcom-sta source patches