diff --git a/chrootInstall.sh b/chrootInstall.sh
index 143e5c9..315351e 100755
--- a/chrootInstall.sh
+++ b/chrootInstall.sh
@@ -36,10 +36,12 @@ if [ "$boot" == 2 ]; then
 fi
 cp /usr/share/locale/en\@quot/LC_MESSAGES/grub.mo /boot/grub/locale/en.mo
 curl https://raw.githubusercontent.com/rwinkhart/artix-install-script/main/config-files/grub -o /etc/default/grub
-if [ "$gpu" != 'NVIDIA' ]; then
-    echo "GRUB_CMDLINE_LINUX_DEFAULT=\"loglevel=3 quiet nowatchdog retbleed=off mem_sleep_default=deep nohz_full=1-"$threadsminusone"\"" >> /etc/default/grub
-else
+if [ "$gpu" == 'NVIDIA' ]; then
     echo "GRUB_CMDLINE_LINUX_DEFAULT=\"loglevel=3 quiet nowatchdog retbleed=off mem_sleep_default=deep nohz_full=1-"$threadsminusone" nvidia-drm.modeset=1\"" >> /etc/default/grub
+elif [ "$gpu" == 'AMD' ]; then
+    echo "GRUB_CMDLINE_LINUX_DEFAULT=\"loglevel=3 quiet nowatchdog retbleed=off mem_sleep_default=deep nohz_full=1-"$threadsminusone" amdgpu.ppfeaturemask=0xffffffff\"" >> /etc/default/grub
+else
+    echo "GRUB_CMDLINE_LINUX_DEFAULT=\"loglevel=3 quiet nowatchdog retbleed=off mem_sleep_default=deep nohz_full=1-"$threadsminusone"\"" >> /etc/default/grub
 fi
 grub-mkconfig -o /boot/grub/grub.cfg
 
@@ -83,7 +85,7 @@ if [ "$cpu" == 'AuthenticAMD' ]; then
 else
     pacman -S intel-ucode --noconfirm
 fi
-if [ "$gpu" == 'AMD' ] || [ "$gpu" == 'Advanced' ]; then
+if [ "$gpu" == 'AMD' ]; then
     pacman -S mesa vulkan-icd-loader vulkan-radeon libva-mesa-driver libva-utils --needed --noconfirm
 elif [ "$gpu" == 'Intel' ]; then
     pacman -S mesa vulkan-icd-loader vulkan-intel --needed --noconfirm
diff --git a/install.sh b/install.sh
index 15135ec..c0bccea 100755
--- a/install.sh
+++ b/install.sh
@@ -3,7 +3,7 @@
 loadkeys us
 echo ----------------------------------------------------------------------------------------------
 echo rwinkhart\'s artix install script
-echo last updated december 04, 2022
+echo last updated january 02, 2023
 echo ----------------------------------------------------------------------------------------------
 echo You will be asked some questions before installation.
 echo -e "----------------------------------------------------------------------------------------------\n"
@@ -37,6 +37,9 @@ read -r -p "timezone: " timezone
 cpu=$(lscpu | grep 'Vendor ID:' | awk 'FNR == 1 {print $3;}')
 threadsminusone=$(echo "$(lscpu | grep 'CPU(s):' | awk 'FNR == 1 {print $2;}') - 1" | bc)
 gpu=$(lspci | grep 'VGA compatible controller:' | awk 'FNR == 1 {print $5;}')
+if ! ([ "$gpu" == 'NVIDIA' ] || [ "$gpu" == 'Intel' ]); then
+    gpu=AMD
+fi
 ram=$(echo "$(< /proc/meminfo)" | grep 'MemTotal:' | awk '{print $2;}'); ram=$(echo "$ram / 1000000" | bc)
 # stop hardware detection