feat: add technical facts from Discord resource channels

- display.md: DisplayLink unreliable (latency, no game mode), DP MST max 2 screens
- cooling.md: 3 heatsink variants (QR code = 9-row), thermal pads 1.5mm front/2.0mm back
- distributions.md: Ubuntu 26.04 daily server ISO works out of box
- radv.md: LLM headless mode tip (~14.2GB available VRAM, headless saves ~800MB)
- stability.md: P5.00 BIOS more susceptible to bricking from memory timing;
  tREF most rewarding timing, GDDR6 ICs are bottom-binned Micron

docs/drivers/radv.md

@@ -614,9 +614,18 @@ export GGML_VK_FORCE_MAX_ALLOCATION_SIZE=2000000000  # 2GB chunks
 
 **Performance:**
 - 4-bit quantized 8B model: ~60 tokens/sec
-- 12GB VRAM split recommended for larger models
+- ~14.2 GB available VRAM with desktop running, 256-512MB BIOS VRAM setting sufficient (dynamic allocation handles the rest)
 - Vulkan backend more stable than ROCm for BC-250
 
+**Tip: Headless mode for maximum VRAM:**
+```bash
+# Disable GUI to free ~800MB RAM for inference
+sudo systemctl set-default multi-user.target && sudo reboot
+
+# Restore GUI later
+sudo systemctl set-default graphical.target && sudo reboot
+```
+
 **Known Issues:**
 - Vulkan sees ~10GB of 12GB VRAM (see VRAM visibility issue above)
 - Large models (70B+) may OOM even with quantization

docs/hardware/cooling.md

@@ -10,6 +10,7 @@ The BC-250 requires active cooling for gaming and desktop use. This guide covers
 - **Fin Orientation:** Vertical, front-to-back
 - **Design Purpose:** Rack-mounted passive or low-airflow cooling
 - **Desktop Use:** Inadequate without active airflow
+- **Variants:** Three heatsink variants exist (8-row and 9-row fins). Quick ID: a QR code next to the PCIe 8-pin connector indicates the 9-row variant. The variant with fewer, thicker-gauge aluminum fins may cool slightly better stock.
 
 !!!warning "Active Cooling Required"
     The stock heatsink is designed for rack airflow, not desktop use. Add a fan for gaming workloads.
@@ -245,7 +246,7 @@ GDDR6 memory chips on the underside can run hot under sustained load.
 **Solution:**
 1. Remove board from case
 2. Remove old thermal pads (if present)
-3. Apply new thermal pads (1.5mm-2mm thick)
+3. Apply new thermal pads (**1.5mm on front of board, 2.0mm on back**)
 4. Attach aluminum plate or heatsink to underside
 5. Optional: Add fan for active cooling
 

docs/hardware/display.md

@@ -237,11 +237,13 @@ glxinfo | grep "OpenGL renderer"
 
 **Option 1: USB DisplayLink Adapter**
 - Add USB to HDMI/DisplayPort adapter
-- Works for desktop use
-- Not suitable for gaming (high latency)
+- Works for desktop use (plug in after boot for best results)
+- **Not suitable for gaming** — high latency due to CPU-based compression, BC-250's CPU is the bottleneck
+- Does not work in Steam Deck game mode
 
 **Option 2: DisplayPort MST Hub**
 - Split single DP into multiple displays
+- **Maximum 2 screens** via MST on BC-250
 - Shares bandwidth between displays
 - Works for productivity
 - Limited resolution per display

docs/linux/distributions.md

@@ -266,8 +266,8 @@ pacman -S base-devel cmake git mesa vulkan-radeon
 ### Ubuntu
 
 **Status:** Works with updated Mesa
-- **Mesa:** 25.1.5 available via PPAs
-- **Kernel:** 6.12+ recommended
+- **Mesa:** 25.1.5 available via PPAs. Ubuntu 26.04 daily server ISO includes Mesa 25+ and kernel 6.17/6.18 with out-of-box BC-250 support.
+- **Kernel:** 6.18.x LTS recommended
 - **Desktop:** GNOME by default
 
 **Pros:**

docs/troubleshooting/stability.md

@@ -432,6 +432,9 @@ zram-size = 4096  # 4GB instead of 8GB
 **Quote**:
 > "Its not actually 450, its like 1750, but you can modify it. I wouldn't recommend it though, ppl over in the russian BC250 chat reported that unstable ram settings would frequently result in BIOS corruption, requiring the BIOS to be reflashed"
 
+!!!danger "P5.00 BIOS More Susceptible to Bricking"
+    Community reports (from the Mem Timing Utility channel) indicate **P5.00 BIOS** is more susceptible to permanent bricking from aggressive memory timings, requiring a full reflash. **P3.00 BIOS** typically triggers a watchdog reset instead. The most rewarding timing to tune is tREF; other UDIMM timings yield minimal gains. The BC-250's GDDR6 ICs are bottom-binned Micron parts with limited overclocking headroom.
+
 **If you must overclock RAM**:
 1. Have hardware flasher ready (CH341A or Raspberry Pi Pico)
 2. Back up working BIOS first