My /proc/acpi/wakeup file is empty

My laptop cannot wake from sleep. I know this means that I need to enable some things in /proc/acpi/wakeup. But I have several problems. First, the entire content of the file is:

Device S-state Status Sysfs node

There is nothing for me to enable.

In case it's important, I'm using Kubuntu 20.04.

So first, I need to figure out how to refer to some devices that I can use to wake up my computer. The power button, the lid, the keyboard, the touchpad, whatever. I can use commands like lsinput or lsdev, but I'm not sure what information is what. What should go in the Device column? The S-state? etc.

Once I have that sorted out, I need to make my modifications to the wakeup file permanent. I know that the file gets reset each session, so I need to write a script that runs on startup to modify the wakeup file. There are related questions on stackexchange, but they mostly deal with A) non-empty wakeup files and B) usb devices, so I haven't figured out how to go about modifying the wakeup file in the proper way.

I realize that there are some adjacent questions on this site, but I haven't been able to piece together a solution.

Here's the output for lsdev:

 Device            DMA   IRQ  I/O Ports
 0  ACPI:Event            0 
 2  ACPI:Event            0 
 7  ELAN1206:00          13 
0000:03:00.0                     0000-0000
14  ACPI:Event           14 
22  ACPI EC              22 
44  ACPI:Event           44 
58  ACPI:Event           58 
59  ACPI:Event           59 
61  ACPI:Event           61 
ACPI                             0000-0000     0000-0000     0000-0000     0000-0000     0000-0000
ahci[0000:04:00.0]         36 
AMD-Vi                    0 
amdgpu                   45 
AMDI0010:01               2 
cascade             4       
ccp-1                    47 
dma                            0000-0000
dma1                           0000-0000
dma2                           0000-0000
EC                               0000-0000     0000-0000
fpu                            0000-0000
i8042                     4 
iwlwifi                  49 
keyboard                       0000-0000   0000-0000
nvme0q0                  34 
nvme0q1                  37 
nvme0q2                  38 
nvme0q3                  39 
nvme0q4                  40 
nvme0q5                  41 
nvme0q6                  42 
nvme0q7                  43 
PCI                          0000-0000 0000-0000 0000-0000 0000-0000 0000-0000   0000-0000
PCIe PME              11 12 
PCIe PME, aerdrv       0 10 
pic1                           0000-0000
pic2                           0000-0000
piix4_smbus                      0000-0000     0000-0000
pinctrl_amd               1 
pnp                            0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000   0000-0000
PNP0800:00                     0000-0000
PNP0C09:00                     0000-0000   0000-0000
rtc0                           0000-0000
snd_hda_intel:card0         51 
snd_hda_intel:card1         52 
timer0                         0000-0000
timer1                         0000-0000
xhci_hcd              16 17 18 19 20 21 23 24 25 26 27 28 29 30 31 32 

And here's the output for lsinput:

 /dev/input/event0
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x5
   version : 0
   name    : "Lid Switch"
   phys    : "PNP0C0D/button/input0"
   bits ev : (null) (null)

/dev/input/event1
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x1
   version : 0
   name    : "Power Button"
   phys    : "PNP0C0C/button/input0"
   bits ev : (null) (null)

/dev/input/event2
   bustype : BUS_I8042
   vendor  : 0x1
   product : 0x1
   version : 43907
   name    : "AT Translated Set 2 keyboard"
   phys    : "isa0060/serio0/input0"
   bits ev : (null) (null) (null) (null) (null)

/dev/input/event3
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x6
   version : 0
   name    : "Video Bus"
   phys    : "LNXVIDEO/video/input0"
   bits ev : (null) (null)

/dev/input/event4
   bustype : BUS_USB
   vendor  : 0x13d3
   product : 0x56cb
   version : 6498
   name    : "USB2.0 HD IR UVC WebCam: USB2.0"
   phys    : "usb-0000:03:00.4-2/button"
   bits ev : (null) (null)

/dev/input/event5
   bustype : BUS_USB
   vendor  : 0x13d3
   product : 0x56cb
   version : 6498
   name    : "USB2.0 HD IR UVC WebCam: USB2.0"
   phys    : "usb-0000:03:00.4-2/button"
   bits ev : (null) (null)

/dev/input/event6
   bustype : BUS_HOST
   vendor  : 0x0
   product : 0x0
   version : 0
   name    : "Asus WMI hotkeys"
   phys    : "asus-nb-wmi/input0"
   bits ev : (null) (null) (null) (null)

/dev/input/event7
   bustype : BUS_I2C
   vendor  : 0x4f3
   product : 0x30f1
   version : 256
   name    : "ELAN1206:00 04F3:30F1 Mouse"
   phys    : "i2c-ELAN1206:00"
   uniq    : ""
   bits ev : (null) (null) (null) (null)

/dev/input/event8
   bustype : BUS_I2C
   vendor  : 0x4f3
   product : 0x30f1
   version : 256
   name    : "ELAN1206:00 04F3:30F1 Touchpad"
   phys    : "i2c-ELAN1206:00"
   uniq    : ""
   bits ev : (null) (null) (null) (null)

/dev/input/event9
   bustype : (null)
   vendor  : 0x0
   product : 0x0
   version : 0
   name    : "HD-Audio Generic HDMI/DP,pcm=3"
   phys    : "ALSA"
   bits ev : (null) (null)

/dev/input/event10
   bustype : (null)
   vendor  : 0x0
   product : 0x0
   version : 0
   name    : "HD-Audio Generic Headset Mic"
   phys    : "ALSA"
   bits ev : (null) (null)

/dev/input/event11
   bustype : (null)
   vendor  : 0x0
   product : 0x0
   version : 0
   name    : "HD-Audio Generic Headphone"
   phys    : "ALSA"
   bits ev : (null) (null)