disabpe-secondary-gpu service fix

sys/apps/openrc/extras/disable-secondary-gpu.sh

@@ -1,4 +1,6 @@
 #!/bin/bash
+set -e
+
 if [[ ! -f /var/cache/disable-gpu ]] &>/dev/null; then
     exit 0
 fi
@@ -7,23 +9,24 @@ if grep "nomodeset" /proc/cmdline ; then
 fi
 
 remove_pci(){
-    if [[ -d "/sys/bus/pci/devices/0000:$1/driver" ]] ; then
-        module=$(basename $(readlink /sys/bus/pci/devices/0000:$1/driver/module))
+    if [[ -d "/sys/bus/pci/devices/$1/driver" ]] ; then
+        module=$(basename $(readlink /sys/bus/pci/devices/$1/driver/module))
         echo "Disabled: $module ($1)"
         rmmod -f $module
     fi
-    echo 1 > /sys/bus/pci/devices/0000:$1/remove
+    echo 1 > /sys/bus/pci/devices/$1/remove
 }
 
 echo 1 > /sys/bus/pci/rescan
 
-for dir in /sys/class/drm/card[0-9*] ; do
+for dir in  $(ls /sys/bus/pci/devices/); do
     # 03 Display controller
     # 02 3D controller
-    if grep "^0x0302" $dir/device/class ; then
-      pci="$(basename $(readlink $dir/device))"
+    if grep "^0x0302" /sys/bus/pci/devices/$dir/class ; then
+      pci="$dir"
       echo "Found 3D controller: ${pci:5}"
-      remove_pci "${pci:5}"
+      remove_pci "$pci"
     fi
 done
+
 udevadm control --reload