How does one get working deep/S3 sleep with Ubuntu Focal/5.7 mainline kernel?

[Syonyk]

Unfortunately, I'm pretty sure there's a mounted partition in there.

On my install, where I've not messed with fstab/etc:

Code:

Device          Start       End   Sectors  Size Type
/dev/mmcblk2p1     64      8191      8128    4M Linux filesystem
/dev/mmcblk2p2   8192     32767     24576   12M Microsoft basic data
/dev/mmcblk2p3  32768    524287    491520  240M Linux filesystem
/dev/mmcblk2p4 524288 122142686 121618399   58G Linux filesystem

and lsblk:

Code:

mmcblk2      179:0    0  58.2G  0 disk
├─mmcblk2p1  179:1    0     4M  0 part
├─mmcblk2p2  179:2    0    12M  0 part /boot/efi
├─mmcblk2p3  179:3    0   240M  0 part /boot
└─mmcblk2p4  179:4    0    58G  0 part /
mmcblk2boot0 179:32   0     4M  1 disk
mmcblk2boot1 179:64   0     4M  1 disk

Unless I'm reading this badly wrong, the 8MB and 12MB offsets are in the middle of the partition mounted at /boot/efi.

Code:

/dev/mmcblk2p2 on /boot/efi type vfat (rw,relatime,sync,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)