sudo -s
echo AS43 > /proc/acpi/wakeup
echo PTXH > /proc/acpi/wakeup

[Unit]
Description=fix to prevent system from waking immediately after suspend

[Service]
Type=simple
ExecStartPre=/bin/sh -c '/bin/echo GPP2 > /proc/acpi/wakeup'
ExecStart=/bin/sh -c '/bin/echo AS43 > /proc/acpi/wakeup'
ExecStartPost=/bin/sh -c '/bin/echo PTXH > /proc/acpi/wakeup'
RemainAfterExit=yes
TimeoutSec=90s

[Install]
WantedBy=sleep.target
WantedBy=multi-user.target