So the problem is that after suspending system in any way the screen goes black immediately and theres no way to wake it up without hard poweroff
i tried many ways like adding some stuff to grub commands in /etc/default/grub, tweaking with gnome-tweaks, messing with power managment options, installing pm-utils and changing gdm3 to lightdm and and back, none of them have worked for more than couple times. i mean couple times system suspended ok and then again it can't suspend.
I managed to get logs from the succesful suspend operation from kern.log, and i wanted to get same log when it goes wrong, i entered recovery mode after unsuccesfull sleep and there was no update in kern.log. what do i have to check now?
here's the log from succesful run
Aug 31 16:05:48 jakub-komputer kernel: [ 350.030765] PM: suspend entry (deep)Aug 31 16:06:01 jakub-komputer kernel: [ 350.039873] Filesystems sync: 0.009 secondsAug 31 16:06:01 jakub-komputer kernel: [ 350.040669] Freezing user space processes ... (elapsed 0.001 seconds) done.Aug 31 16:06:01 jakub-komputer kernel: [ 350.042593] OOM killer disabled.Aug 31 16:06:01 jakub-komputer kernel: [ 350.042594] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.Aug 31 16:06:01 jakub-komputer kernel: [ 350.043821] printk: Suspending console(s) (use no_console_suspend to debug)Aug 31 16:06:01 jakub-komputer kernel: [ 350.049549] e1000e: EEE TX LPI TIMER: 00000011Aug 31 16:06:01 jakub-komputer kernel: [ 350.097835] sd 2:0:0:0: [sda] Synchronizing SCSI cacheAug 31 16:06:01 jakub-komputer kernel: [ 350.098183] sd 2:0:0:0: [sda] Stopping diskAug 31 16:06:01 jakub-komputer kernel: [ 350.156252] ACPI: EC: interrupt blockedAug 31 16:06:01 jakub-komputer kernel: [ 350.203272] ACPI: Preparing to enter system sleep state S3Aug 31 16:06:01 jakub-komputer kernel: [ 350.214073] ACPI: EC: event blockedAug 31 16:06:01 jakub-komputer kernel: [ 350.214076] ACPI: EC: EC stoppedAug 31 16:06:01 jakub-komputer kernel: [ 350.214077] PM: Saving platform NVS memoryAug 31 16:06:01 jakub-komputer kernel: [ 350.214227] Disabling non-boot CPUs ...Aug 31 16:06:01 jakub-komputer kernel: [ 350.216189] smpboot: CPU 1 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.219152] smpboot: CPU 2 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.222040] smpboot: CPU 3 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.223810] IRQ 124: no longer affine to CPU4Aug 31 16:06:01 jakub-komputer kernel: [ 350.225516] smpboot: CPU 4 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.227113] IRQ 123: no longer affine to CPU5Aug 31 16:06:01 jakub-komputer kernel: [ 350.227125] IRQ 129: no longer affine to CPU5Aug 31 16:06:01 jakub-komputer kernel: [ 350.228147] smpboot: CPU 5 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.229587] IRQ 125: no longer affine to CPU6Aug 31 16:06:01 jakub-komputer kernel: [ 350.229603] IRQ 130: no longer affine to CPU6Aug 31 16:06:01 jakub-komputer kernel: [ 350.230679] smpboot: CPU 6 is now offlineAug 31 16:06:01 jakub-komputer kernel: [ 350.232346] IRQ 122: no longer affine to CPU7Aug 31 16:06:01 jakub-komputer kernel: [ 350.233383] smpboot: CPU 7 is now offline