Make "load=nvidia" work

Using a squashfs module created from nvidia-kernel and nvidia-driver packages.
A sample script for creating this nvidia module was added to liveslak, see:
./contrib/scripts/makemod_nvidia.
These two packages were created using the scripts from slackbuilds.org:
  https://slackbuilds.org/repository/14.2/system/nvidia-kernel/
  https://slackbuilds.org/repository/14.2/system/nvidia-driver/

Note that the nvidia-driver package was created on a multilib system so that
it could pick up 32bit compat libraries (needed for Steam among others),
and the CURRENT variable was set to 'yes' so that the nvidia drivers are
fully separated from mesa and xorg-server and do not overwrite system libraries:

  # COMPAT32="yes" CURRENT="yes" ./nvidia-driver.SlackBuild

2 files changed, 48 insertions, 28 deletions

diff --git a/liveinit.tpl b/liveinit.tpl
index 6b15131..223927e 100644
--- a/liveinit.tpl
+++ b/liveinit.tpl
@@ -825,6 +825,14 @@ if [ "$RESCUE" = "" ]; then
   load_modules addons
 
   # And finally any explicitly requested optionals (like nvidia drivers):
+  ## TODO:
+  ## Automatically load the nvidia driver if we find a supported GPU:
+  # NVPCIID=$(lspci -nn|grep NVIDIA|grep VGA|rev|cut -d'[' -f1|rev|cut -d']' -f1|tr -d ':'|tr [a-z] [A-Z])
+  # if cat /mnt/media/${LIVEMAIN}/optional/nvidia-*xx.ids |grep -wq $NVPCIID ;
+  # then
+  #   LOAD="nvidia,${LOAD}"
+  # fi
+  ## END TODO:
   # Remember, module name must adhere to convention: "NNNN-modname-*.sxz"
   # where 'N' is a digit and 'modname' must not contain a dash '-'.
   load_modules optional
diff --git a/make_slackware_live.sh b/make_slackware_live.sh
index ff2e96d..dce69a6 100755
--- a/make_slackware_live.sh
+++ b/make_slackware_live.sh
@@ -90,6 +90,12 @@ LIVEUIDNR=${LIVEUIDNR:-"1000"}
 ROOTPW=${ROOTPW:-"root"}
 LIVEPW=${LIVEPW:-"live"}
 
+# The nvidia persistence account:
+NVUID=${NVUID:-"nvidia"}
+NVUIDNR=${NVUIDNR:-"365"}
+NVGRP=${NVFRP:-"nvidia"}
+NVGRPNR=${NVUIDNR:-"365"}
+
 # Distribution name:
 DISTRO=${DISTRO:-"slackware"}
 
@@ -1442,6 +1448,14 @@ EOL
 # Set a root password.
 echo "root:${ROOTPW}" | chroot ${LIVE_ROOTDIR} /usr/sbin/chpasswd
 
+# Create group and user for the nvidia persistence daemon:
+if ! chroot ${LIVE_ROOTDIR} /usr/bin/getent passwd ${NVUID} > /dev/null 2>&1 ;
+then
+  chroot ${LIVE_ROOTDIR} /usr/sbin/groupadd -g ${NVGRPNR} ${NVGRP}
+  chroot ${LIVE_ROOTDIR} /usr/sbin/useradd -c "Nvidia persistence" -u ${NVUIDNR} -g ${NVGRPNR} -d /dev/null -s /bin/false ${NVUID}
+  echo "${NVUID}:$(openssl rand -base64 12)" | chroot ${LIVE_ROOTDIR} /usr/sbin/chpasswd
+fi
+
 # Create a nonprivileged user account (called "live" by default):
 chroot ${LIVE_ROOTDIR} /usr/sbin/useradd -c "Slackware Live User" -g users -G wheel,audio,cdrom,floppy,plugdev,video,power,netdev,lp,scanner,kmem,dialout,games,disk,input -u ${LIVEUIDNR} -d /home/${LIVEUID} -m -s /bin/bash ${LIVEUID}
 echo "${LIVEUID}:${LIVEPW}" | chroot ${LIVE_ROOTDIR} /usr/sbin/chpasswd
@@ -2397,37 +2411,32 @@ sed -e "s% /usr/bin/update.*verbose%#&%" -i ${LIVE_ROOTDIR}/etc/rc.d/rc.M
 sed -e '/^ *\/usr\/bin\/glib-c/ s, /usr/bin/glib-c,#&,' -i ${LIVE_ROOTDIR}/etc/rc.d/rc.M
 sed -e "s% /sbin/depmod -%#&%" -i ${LIVE_ROOTDIR}/etc/rc.d/rc.modules 
 
-# If we detect a NVIDIA driver, then run the nvidia install routine:
+# Start/stop the NVIDIA persistence daemon if a NVIDIA driver is loaded;
+# Note that this assumes the nvidia-driver and nvidia-kernel packages
+# from slackbuilds.org are being used:
 cat <<EOT >> ${LIVE_ROOTDIR}/etc/rc.d/rc.local
 
-# Deal with the presence of NVIDIA drivers:
-if [ -x /usr/sbin/nvidia-switch ]; then
-  if [ -f /usr/lib${DIRSUFFIX}/xorg/modules/extensions/libglx.so.*-nvidia -a -f /usr/lib${DIRSUFFIX}/xorg/modules/drivers/nvidia_drv.so ]; then
-    echo "-- Installing binary Nvidia drivers:  /usr/sbin/nvidia-switch --install"
-    /usr/sbin/nvidia-switch --install
-  fi
-  # For CUDA/OpenCL to work after reboot, create missing nvidia device nodes:
+# For CUDA/OpenCL to work after reboot, create missing nvidia device nodes:
+if [ -x /usr/bin/nvidia-modprobe ]; then
+  echo "Creating missing nvidia device nodes..."
   /usr/bin/nvidia-modprobe -c 0 -u
-else
-  # Take care of a reboot where nvidia drivers disappeared
-  # afer being used earlier, by restoring the original libraries:
-  if ls /usr/lib${DIRSUFFIX}/xorg/modules/extensions/libglx.so-xorg 1>/dev/null 2>/dev/null ; then
-    mv /usr/lib${DIRSUFFIX}/xorg/modules/extensions/libglx.so{-xorg,} 2>/dev/null
-    mv /usr/lib${DIRSUFFIX}/xorg/modules/extensions/libglx.la{-xorg,} 2>/dev/null
-  fi
-  if ls /usr/lib${DIRSUFFIX}/libGL.so.*-xorg 1>/dev/null 2>/dev/null ; then
-    LIBGL=\$(ls -1 /usr/lib${DIRSUFFIX}/libGL.so.*-xorg |rev |cut -d/ -f1 |cut -d- -f2- |rev)
-    mv /usr/lib${DIRSUFFIX}/\${LIBGL}-xorg /usr/lib${DIRSUFFIX}/\${LIBGL} 2>/dev/null
-    ln -sf \${LIBGL} /usr/lib${DIRSUFFIX}/libGL.so.1 2>/dev/null
-    ln -sf \${LIBGL} /usr/lib${DIRSUFFIX}/libGL.so 2>/dev/null
-    mv /usr/lib${DIRSUFFIX}/libGL.la-xorg /usr/lib${DIRSUFFIX}/libGL.la 2>/dev/null
-  fi
-  if ls /usr/lib${DIRSUFFIX}/libEGL.so.*-xorg 1>/dev/null 2>/dev/null   ; then
-    LIBEGL=\$(ls -1 /usr/lib${DIRSUFFIX}/libEGL.so.*-xorg |rev |cut -d/ -f1 |cut -d- -f2- |rev)
-    mv /usr/lib${DIRSUFFIX}/\${LIBEGL}-xorg /usr/lib${DIRSUFFIX}/\${LIBEGL} 2>/dev/null
-    ln -sf \${LIBEGL} /usr/lib${DIRSUFFIX}/libEGL.so.1 2>/dev/null
-    ln -sf \${LIBEGL} /usr/lib${DIRSUFFIX}/libEGL.so 2>/dev/null
-  fi
+fi
+
+# Start the nvidia-persistenced daemon:
+if  [ -x /etc/rc.d/rc.nvidia-persistenced ] && [ -d /var/run/nvidia-persistenced ]; then
+  echo "Starting nvidia persistence daemon..."
+  sed -e "s/NVPD_USER=.*/NVPD_USER=${NVUID}/" -i /etc/rc.d/rc.nvidia-persistenced
+  chown ${NVUID}:${NVGRP} /var/run/nvidia-persistenced 2>/dev/null
+  /etc/rc.d/rc.nvidia-persistenced start
+fi
+EOT
+
+cat <<EOT >> ${LIVE_ROOTDIR}/etc/rc.d/rc.local_shutdown
+
+# Stop the nvidia-persistenced daemon:
+if  [ -x /etc/rc.d/rc.nvidia-persistenced ]; then
+  echo "Stopping nvidia persistence daemon..."
+  /etc/rc.d/rc.nvidia-persistenced stop
 fi
 EOT
 
@@ -2701,6 +2710,9 @@ if [ "$LIVEDE" != "XFCE" -a "$LIVEDE" != "SLACKWARE" ]; then
     # Add custom (proprietary) graphics drivers:
     echo "-- Adding binary GPU drivers supporting kernel ${KVER}."
     cp ${LIVE_TOOLDIR}/graphics/*${KVER}-${SL_VERSION}-${SL_ARCH}.sxz ${LIVE_MOD_OPT}/
+    if ls ${LIVE_TOOLDIR}/graphics/nvidia-*xx.ids 1>/dev/null 2>&1 ; then
+      cp ${LIVE_TOOLDIR}/graphics/nvidia-*xx.ids ${LIVE_MOD_OPT}/
+    fi
   fi
 fi