>What is the SleepMode=mem trick and did it work for you?
in /etc/systemd/sleep.conf
Suspend 3 (sometimes called s3 or s2ram), so far, is the ONLY worthwhile sleep
All others are barely better than screen blanking
Usually ALSO need a bsp uboot, for that version of trust
manjaro was 1st to have a kernel that "worked",,tsy kernel
Elementary uses this kernel, updated uboot no good, have to change (to get s3)
Fedora 32 also works, haven't updated recently so???
xmix's kernel supposedly also works
NO OTHERS (that I know of) can do s3
FWIW,,,,,, if you have more info,, post,,, look for "suspend 3" in dmesg
(and NOT s2idle)
--edit--
BTW if you have nvme, don't bother, pcie driver won't suspend
Really smart to back up 1st 16m BEFORE an upgrade, just in case a new uboot is "not so good", sometimes gets installed 'behind your back'
(and remember,,, if you have a 'working' uboot on emmc, that is the 1 that will ALWAYS be used, whatever uboot is on SD will be ignored,,,
so if you install SD -> emmc, you may well have changed uboots without realizing)
in /etc/systemd/sleep.conf
Suspend 3 (sometimes called s3 or s2ram), so far, is the ONLY worthwhile sleep
All others are barely better than screen blanking
Usually ALSO need a bsp uboot, for that version of trust
manjaro was 1st to have a kernel that "worked",,tsy kernel
Elementary uses this kernel, updated uboot no good, have to change (to get s3)
Fedora 32 also works, haven't updated recently so???
xmix's kernel supposedly also works
NO OTHERS (that I know of) can do s3
FWIW,,,,,, if you have more info,, post,,, look for "suspend 3" in dmesg
(and NOT s2idle)
--edit--
BTW if you have nvme, don't bother, pcie driver won't suspend
Really smart to back up 1st 16m BEFORE an upgrade, just in case a new uboot is "not so good", sometimes gets installed 'behind your back'
(and remember,,, if you have a 'working' uboot on emmc, that is the 1 that will ALWAYS be used, whatever uboot is on SD will be ignored,,,
so if you install SD -> emmc, you may well have changed uboots without realizing)
