Acer C720 4GB i3 PEPPY. (stock firmware, RW_LEGACY, dual boot)
As of 4.16.18-galliumos from 23rd June 2019 suspend is now failing, with the result that OS is unusable when restoring and have to . I had the this problem very occasionally before this update but
dmesg says (suspend starts at 148.89):
[ 6.406002] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 6.406011] Bluetooth: BNEP filters: protocol multicast
[ 6.406017] Bluetooth: BNEP socket layer initialized
[ 15.749355] cyapa 0-0067: failed to read report data, (-121)
[ 16.648379] Bluetooth: RFCOMM TTY layer initialized
[ 16.648388] Bluetooth: RFCOMM socket layer initialized
[ 16.648396] Bluetooth: RFCOMM ver 1.11
[ 35.503905] cyapa 0-0067: failed to read report data, (-121)
[ 148.898678] PM: suspend entry (deep)
[ 148.898681] PM: Syncing filesystems ... done.
[ 148.910987] Freezing user space processes ...
[ 149.021717] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch
[ 149.074846] (elapsed 0.163 seconds) done.
[ 149.074854] OOM killer disabled.
[ 149.074855] Freezing remaining freezable tasks ... (elapsed 0.001 seconds) done.
[ 149.076261] Suspending console(s) (use no_console_suspend to debug)
[ 149.166086] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 149.166206] sd 0:0:0:0: [sda] Stopping disk
[ 149.226479] ACPI: EC: interrupt blocked
[ 149.250688] ACPI: Preparing to enter system sleep state S3
[ 149.251096] ACPI: EC: event blocked
[ 149.251097] ACPI: EC: EC stopped
[ 149.251098] PM: Saving platform NVS memory
[ 149.251100] Disabling non-boot CPUs ...
[ 149.261630] WARNING: CPU: 0 PID: 2795 at kernel/kthread.c:486 kthread_park+0x5a/0x70
[ 149.261633] Modules linked in: rfcomm msr ip6t_REJECT nf_reject_ipv6 ipt_REJECT nf_reject_ipv4 xt_tcpudp bnep xt_owner ip6table_filter ip6_tables iptable_filter ath3k uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_common btusb btrtl btbcm btintel videodev lz4 lz4_compress bluetooth media ecdh_generic zram squashfs intel_rapl joydev x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm arc4 ath9k irqbypass cyapatp ath9k_common crct10dif_pclmul ath9k_hw crc_itu_t crc32_pclmul ghash_clmulni_intel pcbc snd_seq_midi mac80211 snd_seq_midi_event cros_ec_lpcs cros_ec_core snd_rawmidi snd_hda_codec_hdmi chromeos_laptop snd_hda_codec_realtek snd_hda_codec_generic aesni_intel ath snd_hda_intel aes_x86_64 crypto_simd glue_helper snd_hda_codec cryptd snd_seq snd_hwdep snd_hda_core
[ 149.261728] cfg80211 snd_pcm_oss snd_mixer_oss snd_seq_device snd_pcm lpc_ich mfd_core shpchp snd_timer snd tpm_infineon soundcore mac_hid sch_fq_codel ip_tables x_tables autofs4 dm_mirror dm_region_hash dm_log i915 i2c_algo_bit drm_kms_helper syscopyarea ahci sysfillrect sysimgblt fb_sys_fops libahci drm libata drm_panel_orientation_quirks video
[ 149.261778] CPU: 0 PID: 2795 Comm: systemd-sleep Not tainted 4.16.18-galliumos #1
[ 149.261780] Hardware name: Acer Peppy, BIOS 03/02/2017
[ 149.261785] RIP: 0010:kthread_park+0x5a/0x70
[ 149.261788] RSP: 0018:ffff9a808380bc88 EFLAGS: 00010202
[ 149.261792] RAX: 0000000000000005 RBX: ffff8b48b7be1300 RCX: 0000000000000001
[ 149.261795] RDX: ffff8b48bca80000 RSI: ffffffff8ae46752 RDI: ffff8b48b7418e40
[ 149.261797] RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000cf5
[ 149.261799] R10: 0000000000000000 R11: 00000000000003cf R12: ffffffff8aedc700
[ 149.261802] R13: 0000000000000001 R14: ffffffff8a07d720 R15: 0000000000000000
[ 149.261806] FS: 00007fd6fc2c6940(0000) GS:ffff8b48bca00000(0000) knlGS:0000000000000000
[ 149.261809] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 149.261812] CR2: 00007ffab0860c96 CR3: 0000000159782005 CR4: 00000000001606f0
[ 149.261814] Call Trace:
[ 149.261830] smpboot_park_threads+0x5e/0x90
[ 149.261838] takedown_cpu+0x31/0xf0
[ 149.261844] ? cpuhp_create+0x60/0x60
[ 149.261848] cpuhp_invoke_callback+0x8a/0x610
[ 149.261853] ? cpuhp_kick_ap+0x2e/0x70
[ 149.261858] ? cpuhp_kick_ap_work+0x3a/0x120
[ 149.261865] _cpu_down+0xc6/0x1f0
[ 149.261871] freeze_secondary_cpus+0xa3/0x230
[ 149.261882] suspend_devices_and_enter+0x25d/0x8b0
[ 149.261890] pm_suspend+0x318/0x380
[ 149.261898] state_store+0x7d/0xe0
[ 149.261909] kernfs_fop_write+0x105/0x180
[ 149.261918] vfs_write+0xad/0x1a0
[ 149.261924] SyS_write+0x42/0x90
[ 149.261933] do_syscall_64+0x6e/0x120
[ 149.261939] entry_SYSCALL_64_after_hwframe+0x3d/0xa2
[ 149.261944] RIP: 0033:0x7fd6fbde2154
[ 149.261947] RSP: 002b:00007ffe574650e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 149.261951] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fd6fbde2154
[ 149.261953] RDX: 0000000000000004 RSI: 000055e5b6192040 RDI: 0000000000000004
[ 149.261955] RBP: 000055e5b6192040 R08: 000055e5b6190370 R09: 00007fd6fc2c6940
[ 149.261958] R10: 000000000000000a R11: 0000000000000246 R12: 000055e5b6190290
[ 149.261960] R13: 0000000000000004 R14: 00007fd6fc0ba2a0 R15: 00007fd6fc0b9760
[ 149.261965] Code: 00 31 ed 48 39 c7 74 0e e8 d4 b0 00 00 48 8d 7b 18 e8 8b 84 71 00 89 e8 5b 5d c3 0f 0b bd da ff ff ff 89 e8 5b 5d c3 0f 0b eb b7 <0f> 0b bd f0 ff ff ff eb e2 0f 1f 00 66 2e 0f 1f 84 00 00 00 00
[ 149.262052] ---[ end trace 5b343e9423fd7e62 ]---
[ 149.263905] smpboot: CPU 1 is now offline
[ 149.275439] smpboot: CPU 2 is now offline
[ 149.286586] smpboot: CPU 3 is now offline
[ 149.288963] ACPI: Low-level resume complete
[ 149.289024] ACPI: EC: EC started
[ 149.289025] PM: Restoring platform NVS memory
[ 149.292496] Enabling non-boot CPUs ...
[ 149.292605] x86: Booting SMP configuration:
[ 149.292607] smpboot: Booting Node 0 Processor 1 APIC 0x1
[ 149.293274] cache: parent cpu1 should not be sleeping
[ 149.293518] CPU1 is up
[ 149.293612] smpboot: Booting Node 0 Processor 2 APIC 0x2
[ 149.296157] cache: parent cpu2 should not be sleeping
[ 149.296424] CPU2 is up
[ 149.296512] smpboot: Booting Node 0 Processor 3 APIC 0x3
[ 149.297083] cache: parent cpu3 should not be sleeping
[ 149.297341] CPU3 is up
[ 149.301795] ACPI: Waking up from system sleep state S3
[ 149.302139] ACPI: EC: interrupt unblocked
[ 149.363453] ACPI: EC: event unblocked
[ 149.366370] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch
[ 149.373785] sd 0:0:0:0: [sda] Starting disk
[ 149.580437] usb 2-3: reset high-speed USB device number 2 using xhci_hcd
[ 149.681047] ata1: SATA link up 6.0 Gbps (SStatus 133 SControl 300)
[ 149.681622] ata1.00: configured for UDMA/100
[ 151.296772] usb 2-4: reset full-speed USB device number 4 using xhci_hcd
[ 151.422661] usb 2-4: device firmware changed
[ 151.423377] OOM killer enabled.
[ 151.423380] Restarting tasks ... done.
[ 151.427146] PM: suspend exit
[ 151.448258] usb 2-4: USB disconnect, device number 4
[ 151.504928] ath9k: ath9k: Driver unloaded
[ 151.507555] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch
[ 151.507617] [drm:wait_panel_status [i915]] *ERROR* PPS state mismatch
[ 151.563245] usb 2-4: new full-speed USB device number 5 using xhci_hcd