diff --git a/docs/bios/overclocking.md b/docs/bios/overclocking.md
index d3bd628..5cf2098 100644
--- a/docs/bios/overclocking.md
+++ b/docs/bios/overclocking.md
@@ -267,17 +267,17 @@ Start at 2000 MHz @ 1000 mV and work up. Stability varies by board (silicon lott
 
 ```bash
 # View current frequency/voltage table
-cat /sys/class/drm/card1/device/pp_od_clk_voltage
+cat /sys/class/drm/card0/device/pp_od_clk_voltage
 
 # Set voltage and frequency
 # Format: vc <level> <frequency_MHz> <voltage_mV>
-echo "vc 0 2100 1025" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
+echo "vc 0 2100 1025" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
 
 # Commit changes
-echo "c" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
+echo "c" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
 
 # Verify
-cat /sys/class/drm/card1/device/pp_od_clk_voltage
+cat /sys/class/drm/card0/device/pp_od_clk_voltage
 ```
 
 **Test with benchmark:**
@@ -446,7 +446,7 @@ systemctl status cyan-skillfish-governor-smu
 sudo systemctl restart cyan-skillfish-governor-smu
 
 # Check applied settings
-cat /sys/class/drm/card1/device/pp_od_clk_voltage
+cat /sys/class/drm/card0/device/pp_od_clk_voltage
 ```
 
 ## Advanced: Multiple Voltage Points
@@ -458,13 +458,13 @@ For Cyan-Skillfish Governor or manual tuning:
 1. Test each frequency point:
 ```bash
 # Test 1500 MHz
-echo "vc 0 1500 875" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
-echo "c" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
+echo "vc 0 1500 875" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
+echo "c" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
 # Run benchmark, find minimum stable voltage
 
 # Test 1750 MHz
-echo "vc 0 1750 950" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
-echo "c" | sudo tee /sys/class/drm/card1/device/pp_od_clk_voltage
+echo "vc 0 1750 950" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
+echo "c" | sudo tee /sys/class/drm/card0/device/pp_od_clk_voltage
 # Run benchmark, find minimum stable voltage
 
 # Repeat for 2000, 2100, 2175, 2230 MHz
diff --git a/docs/bios/vram.md b/docs/bios/vram.md
index cddc883..d3dae54 100644
--- a/docs/bios/vram.md
+++ b/docs/bios/vram.md
@@ -146,7 +146,7 @@ free -h
 # Should show ~10-15GB depending on allocation
 
 # Check VRAM
-cat /sys/class/drm/card1/device/mem_info_vram_total
+cat /sys/class/drm/card0/device/mem_info_vram_total
 # Shows GPU memory in bytes
 
 # Check both
@@ -259,7 +259,7 @@ After changing allocation, verify it works:
 ```bash
 # 1. Check allocation took effect
 free -h
-cat /sys/class/drm/card1/device/mem_info_vram_total
+cat /sys/class/drm/card0/device/mem_info_vram_total
 
 # 2. Run stress test
 vkmark  # Vulkan benchmark
diff --git a/docs/drivers/radv.md b/docs/drivers/radv.md
index fd78097..4f5ddeb 100644
--- a/docs/drivers/radv.md
+++ b/docs/drivers/radv.md
@@ -727,7 +727,7 @@ unset MESA_SHADER_CACHE_DISABLE
 **Quick Check:**
 ```bash
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Should show multiple frequency levels with * at current:
 # 0: 1000Mhz
diff --git a/docs/getting-started/quick-start.md b/docs/getting-started/quick-start.md
index e903699..02223a8 100644
--- a/docs/getting-started/quick-start.md
+++ b/docs/getting-started/quick-start.md
@@ -140,7 +140,7 @@ systemctl status cyan-skillfish-governor-smu
 # Should show: active (running)
 
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 # Should show multiple frequencies, one marked with *
 ```
 
@@ -189,7 +189,7 @@ This fixes graphical glitches in some games.
 **Solution:**
 
 1. Check governor is running: `systemctl status cyan-skillfish-governor-smu`
-2. Check GPU frequency: `cat /sys/class/drm/card1/device/pp_dpm_sclk`
+2. Check GPU frequency: `cat /sys/class/drm/card0/device/pp_dpm_sclk`
 3. Should NOT be stuck at 1500MHz
 
 ### High Temperatures
diff --git a/docs/linux/arch.md b/docs/linux/arch.md
index 6b9f89a..af85cbb 100644
--- a/docs/linux/arch.md
+++ b/docs/linux/arch.md
@@ -297,7 +297,7 @@ systemctl status oberon-governor              # legacy (migrate to SMU)
 ### Check Frequency Scaling
 
 ```bash
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Example output:
 # 0: 1000MHz
@@ -470,7 +470,7 @@ fastfetch
 nvtop
 
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Check governor (use whichever you installed)
 systemctl status cyan-skillfish-governor-smu
diff --git a/docs/linux/bazzite.md b/docs/linux/bazzite.md
index cec360c..67e2566 100644
--- a/docs/linux/bazzite.md
+++ b/docs/linux/bazzite.md
@@ -359,7 +359,7 @@ sudo systemctl enable --now cyan-skillfish-governor-smu.service
 sudo systemctl restart cyan-skillfish-governor-smu
 
 # Verify frequency scaling
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 ```
 
 ### Boot Slow / Black Screen During Boot
@@ -403,7 +403,7 @@ vulkaninfo | grep deviceName
 # Should show: AMD Radeon Graphics (RADV GFX1013)
 
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Check temperatures
 sensors
@@ -423,7 +423,7 @@ vulkaninfo | grep deviceName
 nvtop
 
 # Check governor scaling
-watch -n 1 cat /sys/class/drm/card1/device/pp_dpm_sclk
+watch -n 1 cat /sys/class/drm/card0/device/pp_dpm_sclk
 ```
 
 ---
@@ -438,7 +438,7 @@ ujust update
 systemctl status cyan-skillfish-governor-smu
 
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Check temps
 sensors
diff --git a/docs/linux/cachyos.md b/docs/linux/cachyos.md
index c25936f..801ab1f 100644
--- a/docs/linux/cachyos.md
+++ b/docs/linux/cachyos.md
@@ -171,9 +171,9 @@ See [github.com/filippor/cyan-skillfish-governor](https://github.com/filippor/cy
 
 **Verify it's working:**
 ```bash
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 # Should show multiple frequencies, * moves based on load
-# Note: Your GPU may be card1 instead - check /sys/class/drm/ if card0 doesn't work
+# Note: Verify with: ls /sys/class/drm/  (BC-250 is usually card0 unless an iGPU is enumerated first)
 ```
 
 ---
@@ -340,7 +340,7 @@ vulkaninfo | grep deviceName  # Expected: AMD Radeon Graphics (RADV GFX1013)
 systemctl status cyan-skillfish-governor-smu  # Expected: active (running)
 
 # 5. Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk  # Expected: Multiple frequencies
+cat /sys/class/drm/card0/device/pp_dpm_sclk  # Expected: Multiple frequencies
 
 # 6. Check sensors
 sensors  # Expected: nct6686-isa-0a20, GPU temp, fan speeds
diff --git a/docs/linux/debian.md b/docs/linux/debian.md
index 861d384..96ff56c 100644
--- a/docs/linux/debian.md
+++ b/docs/linux/debian.md
@@ -219,7 +219,7 @@ Verify:
 
 ```bash
 systemctl status cyan-skillfish-governor-smu
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 ```
 
 ---
@@ -340,7 +340,7 @@ uname -r
 systemctl status cyan-skillfish-governor-smu  # or cyan-skillfish-governor-tt
 
 # GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 # Should show multiple frequencies with * moving
 ```
 
@@ -527,7 +527,7 @@ vulkaninfo | grep deviceName
 systemctl status cyan-skillfish-governor-smu
 
 # Check GPU frequency
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Check temps
 sensors
diff --git a/docs/linux/fedora.md b/docs/linux/fedora.md
index bd9ccc5..c019943 100644
--- a/docs/linux/fedora.md
+++ b/docs/linux/fedora.md
@@ -285,7 +285,7 @@ sudo systemctl restart cyan-skillfish-governor-smu
 mangohud steam
 
 # Check GPU frequency scaling
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 # Should show frequencies changing under load
 ```
 
diff --git a/docs/reference/quick-reference.md b/docs/reference/quick-reference.md
index c48496a..4988059 100644
--- a/docs/reference/quick-reference.md
+++ b/docs/reference/quick-reference.md
@@ -206,10 +206,10 @@ sudo systemctl restart cyan-skillfish-governor-smu
 ### Check GPU Frequency
 
 !!!note "GPU Card Number"
-    The BC-250 GPU is typically `card1` (not `card0`). Verify with: `ls /sys/class/drm/ | grep "^card"`. All sysfs paths in this documentation use `card1`.
+    The BC-250 GPU is typically `card0`. On systems where another GPU (an iGPU) is also enumerated, it may be `card1`. Verify with: `ls /sys/class/drm/ | grep "^card"`.
 
 ```bash
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 # Should show multiple frequencies, current one marked with *
 ```
 
@@ -233,7 +233,7 @@ vulkaninfo | grep deviceName
 
 # Check RAM/VRAM split
 free -h
-cat /sys/class/drm/card1/device/mem_info_vram_total
+cat /sys/class/drm/card0/device/mem_info_vram_total
 
 # Check temperatures
 sensors
diff --git a/docs/system/governor.md b/docs/system/governor.md
index 82ef490..236015c 100644
--- a/docs/system/governor.md
+++ b/docs/system/governor.md
@@ -352,7 +352,7 @@ systemctl status cyan-skillfish-governor-smu
 
 ```bash
 # View current GPU frequencies
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Example output:
 # 0: 1000Mhz
@@ -384,7 +384,7 @@ Shows real-time GPU frequency, voltage, and temperature.
 **Command Line:**
 ```bash
 # Watch frequency changes
-watch -n 1 'cat /sys/class/drm/card1/device/pp_dpm_sclk'
+watch -n 1 'cat /sys/class/drm/card0/device/pp_dpm_sclk'
 ```
 
 **MangoHud (In-Game Overlay):**
@@ -496,7 +496,7 @@ systemctl status cyan-skillfish-governor-smu
 **Verify fix:**
 ```bash
 # Should show 1000 MHz at idle (not stuck at 1500 MHz)
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 ```
 
 !!!note "GPU Card Number"
diff --git a/docs/system/sensors.md b/docs/system/sensors.md
index 9cc70b8..e8223da 100644
--- a/docs/system/sensors.md
+++ b/docs/system/sensors.md
@@ -253,7 +253,7 @@ This updates every second. Press `Ctrl+C` to exit.
 Read GPU temperature directly:
 
 ```bash
-cat /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input
+cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input
 ```
 
 This returns temperature in millidegrees Celsius (e.g., `63000` = 63°C)
@@ -261,7 +261,7 @@ This returns temperature in millidegrees Celsius (e.g., `63000` = 63°C)
 Convert to Celsius:
 
 ```bash
-awk '{print $1/1000 "°C"}' /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input
+awk '{print $1/1000 "°C"}' /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input
 ```
 
 ### GPU Power Consumption
@@ -269,13 +269,13 @@ awk '{print $1/1000 "°C"}' /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input
 Read current GPU power draw:
 
 ```bash
-cat /sys/class/drm/card1/device/hwmon/hwmon*/power1_average
+cat /sys/class/drm/card0/device/hwmon/hwmon*/power1_average
 ```
 
 Returns power in microwatts. Convert to watts:
 
 ```bash
-awk '{print $1/1000000 "W"}' /sys/class/drm/card1/device/hwmon/hwmon*/power1_average
+awk '{print $1/1000000 "W"}' /sys/class/drm/card0/device/hwmon/hwmon*/power1_average
 ```
 
 ### GPU Clock Speeds
@@ -283,7 +283,7 @@ awk '{print $1/1000000 "W"}' /sys/class/drm/card1/device/hwmon/hwmon*/power1_ave
 Check current GPU frequency:
 
 ```bash
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 ```
 
 Example output:
@@ -683,7 +683,7 @@ From Discord testing:
 
 3. Check amdgpu sysfs directly:
    ```bash
-   cat /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input
+   cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input
    ```
 
 4. Ensure Mesa 25.1+ is installed:
@@ -741,9 +741,9 @@ echo "Timestamp,GPU_Temp,CPU_Temp,GPU_Power" > "$LOGFILE"
 
 while true; do
     TIMESTAMP=$(date +%s)
-    GPU_TEMP=$(cat /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input 2>/dev/null | awk '{print $1/1000}')
+    GPU_TEMP=$(cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input 2>/dev/null | awk '{print $1/1000}')
     CPU_TEMP=$(sensors k10temp-pci-00c3 -u 2>/dev/null | grep temp1_input | awk '{print $2}')
-    GPU_POWER=$(cat /sys/class/drm/card1/device/hwmon/hwmon*/power1_average 2>/dev/null | awk '{print $1/1000000}')
+    GPU_POWER=$(cat /sys/class/drm/card0/device/hwmon/hwmon*/power1_average 2>/dev/null | awk '{print $1/1000000}')
 
     echo "$TIMESTAMP,$GPU_TEMP,$CPU_TEMP,$GPU_POWER" >> "$LOGFILE"
     sleep 5
@@ -771,7 +771,7 @@ Save as `~/temp-alert.sh`:
 THRESHOLD=85
 
 while true; do
-    GPU_TEMP=$(cat /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input 2>/dev/null | awk '{print $1/1000}')
+    GPU_TEMP=$(cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input 2>/dev/null | awk '{print $1/1000}')
 
     if (( $(echo "$GPU_TEMP > $THRESHOLD" | bc -l) )); then
         notify-send -u critical "BC-250 Temperature Alert" "GPU temp: ${GPU_TEMP}°C (threshold: ${THRESHOLD}°C)"
@@ -795,13 +795,13 @@ sensors
 watch -n 1 sensors
 
 # GPU temperature only
-cat /sys/class/drm/card1/device/hwmon/hwmon*/temp1_input | awk '{print $1/1000 "°C"}'
+cat /sys/class/drm/card0/device/hwmon/hwmon*/temp1_input | awk '{print $1/1000 "°C"}'
 
 # GPU power consumption
-cat /sys/class/drm/card1/device/hwmon/hwmon*/power1_average | awk '{print $1/1000000 "W"}'
+cat /sys/class/drm/card0/device/hwmon/hwmon*/power1_average | awk '{print $1/1000000 "W"}'
 
 # GPU clock speed
-cat /sys/class/drm/card1/device/pp_dpm_sclk
+cat /sys/class/drm/card0/device/pp_dpm_sclk
 
 # Launch nvtop
 nvtop
diff --git a/docs/troubleshooting/boot.md b/docs/troubleshooting/boot.md
index d72b78e..cd3cec7 100644
--- a/docs/troubleshooting/boot.md
+++ b/docs/troubleshooting/boot.md
@@ -760,7 +760,7 @@ xrandr --listproviders
 
 # DRM devices
 ls -la /sys/class/drm/
-# Should show card1, card1-DP-1
+# Should show card0, card0-DP-1
 
 # Current display mode
 xrandr
diff --git a/docs/troubleshooting/display.md b/docs/troubleshooting/display.md
index 1309869..e2067f2 100644
--- a/docs/troubleshooting/display.md
+++ b/docs/troubleshooting/display.md
@@ -505,7 +505,7 @@ xrandr
 
 # Check DRM
 ls /sys/class/drm/
-# Should show card1, card1-DP-1, etc.
+# Should show card0, card0-DP-1, etc.
 ```
 
 ### Check GPU Initialization
diff --git a/docs/troubleshooting/performance.md b/docs/troubleshooting/performance.md
index 537a7ff..bb4e959 100644
--- a/docs/troubleshooting/performance.md
+++ b/docs/troubleshooting/performance.md
@@ -150,7 +150,7 @@ Apply to kernel source and recompile, or use a tool like `dkms` or CachyOS kerne
 
 **Verification:**
 ```bash
-cat /sys/class/drm/card1/device/pp_od_clk_voltage
+cat /sys/class/drm/card0/device/pp_od_clk_voltage
 # Should show range up to 2300MHz or higher
 ```
 
diff --git a/docs/troubleshooting/stability.md b/docs/troubleshooting/stability.md
index cd69bdc..449e3c8 100644
--- a/docs/troubleshooting/stability.md
+++ b/docs/troubleshooting/stability.md
@@ -648,7 +648,7 @@ watch -n 1 sensors
 
 **Terminal 2 - Frequencies and voltages**:
 ```bash
-watch -n 1 'cat /sys/class/drm/card1/device/pp_od_clk_voltage'
+watch -n 1 'cat /sys/class/drm/card0/device/pp_od_clk_voltage'
 ```
 
 **Terminal 3 - Memory**: