When I check which cores are running (e.g. with htop), it always shows all 8 cores are on. This is despite the fact that the load average is usually quite low (around 3), so it definitely doesn’t need this horsepower. My old XA2 Plus didn’t do this, and also my wife’s 10 does not. Obviously, battery life isn’t great this way.
I have reflashed SFOS to make sure it’s not something I installed. I just got this phone yesterday (a “new” secondhand device for me). Only thing I did was to update with pkcon and install htop to check.
I do see this in the log repeatedly, not sure if it’s relevant:
[ 584.833648] Freezing user space processes ... (elapsed 0.034 seconds) done.
[ 584.868188] OOM killer disabled.
[ 584.868191] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done.
[ 584.872202] Suspending console(s) (use no_console_suspend to debug)
[ 584.905923] Disabling non-boot CPUs ...
[ 584.908398] CPU1: shutdown
[ 584.913637] CPU2: shutdown
[ 584.919027] CPU3: shutdown
[ 584.923651] CPU4: shutdown
[ 584.927523] CPU5: shutdown
[ 584.931427] CPU6: shutdown
[ 584.935013] CPU7: shutdown
[ 584.938707] suspend ns: 584938696744 suspend cycles: 23409443172
[ 584.938696] resume cycles: 23411635310
[ 584.939621] Enabling non-boot CPUs ...
[ 584.941739] cache: parent cpu1 should not be sleeping
[ 584.942400] CPU1 is up
[ 584.943925] cache: parent cpu2 should not be sleeping
[ 584.944621] CPU2 is up
[ 584.946204] cache: parent cpu3 should not be sleeping
[ 584.946905] CPU3 is up
[ 584.948153] arch_timer: CPU4: Trapping CNTVCT access
[ 584.948669] cache: parent cpu4 should not be sleeping
[ 584.949371] CPU4 is up
[ 584.950125] arch_timer: CPU5: Trapping CNTVCT access
[ 584.950479] cache: parent cpu5 should not be sleeping
[ 584.951024] CPU5 is up
[ 584.951835] arch_timer: CPU6: Trapping CNTVCT access
[ 584.952149] cache: parent cpu6 should not be sleeping
[ 584.952794] CPU6 is up
[ 584.953513] arch_timer: CPU7: Trapping CNTVCT access
[ 584.953842] cache: parent cpu7 should not be sleeping
[ 584.954995] CPU7 is up
[ 584.995623] OOM killer enabled.
[ 584.995627] Restarting tasks ... done.
[ 585.016702] PM: PM: suspend exit 2022-09-17 18:29:54.113981794 UTC
[ 585.016706] PM: suspend exit
[ 585.065376] ## mmc1: mmc_gpio_set_uim2_en: gpio=101 value=1
Is this just me, or is on-demand core activation for this device broken? I’m running 4.4.0.68