I'm on latest Ubuntu 16.04 fully up-to-date, x64 Acer Aspire E1-572G . Graphics drivers are the open source ones: radeon for the discrete card, and i915 for the integrated card (which is used by everything unless I set DRI_PRIME=1 which switches graphics processing to radeon ).

I also use tlp for power management and here is my current tlp configuration: https://pastebin.com/dpCuTF1b

BIOS is in UEFI (default) mode with secure boot turned off. systemctl --failed reports 0 loaded units listed which indicates all services started successfully.

Here is the weird behavior that's going on:

Some times when I put the computer to sleep (suspend), it just turns off. It doesn't even shutdown. It turns off as if I took off the battery from the laptop. I'm not sure if this happens only when I close the lid, but I guess it happens even if I suspend the laptop without closing the lid (by clicking the suspend button). I will feedback later if this problem ever happens without closing the lid, because I can't actually remember right now.

When this happens, the background wallpaper is no longer displayed on the lock screen on later system restarts, until I change the wallpaper again.

/var/crash/ is empty, and /var/log/boot.log has a report indicating that fsck is fixing some orphaned inodes. Actually, here are some logs:

I had all versions of Windows (7, 8, 8.1, 10) installed on this laptop before and I never had this issue. I also performed memtest86 tests and they all succeeded.

This crash is very annoying because every time it happens I use debsums and diff to make sure nothing is corrupted.

I'm ready to share more info upon request, Thank you!

sudo blkid output:

/dev/sda1: UUID="5331-7707" TYPE="vfat" PARTLABEL="EFI System Partition" PARTUUID="3f8152ad-fccf-4675-9e9d-8ad5ad225726" /dev/sda2: UUID="715420bf-c241-4f2d-bec4-01a73dbb9806" TYPE="ext4" PARTUUID="0f05b77f-4b96-4f0c-a5cb-eb425a230467" /dev/sda3: UUID="ffaf844c-98b3-4b94-89c7-c0e69a456921" TYPE="swap" PARTUUID="5c622918-0497-4354-b187-15f08cd35fc3"

cat /etc/fstab output:

# /etc/fstab: static file system information. # # Use 'blkid' to print the universally unique identifier for a # device; this may be used with UUID= as a more robust way to name devices # that works even if disks are added and removed. See fstab(5). # # <file system> <mount point> <type> <options> <dump> <pass> # / was on /dev/sda2 during installation UUID=715420bf-c241-4f2d-bec4-01a73dbb9806 / ext4 errors=remount-ro 0 1 # /boot/efi was on /dev/sda1 during installation UUID=5331-7707 /boot/efi vfat umask=0077 0 1 # swap was on /dev/sda3 during installation UUID=ffaf844c-98b3-4b94-89c7-c0e69a456921 none swap sw 0 0

sudo fdisk -l output:

Disk /dev/sda: 698.7 GiB, 750156374016 bytes, 1465149168 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 4096 bytes I/O size (minimum/optimal): 4096 bytes / 4096 bytes Disklabel type: gpt Disk identifier: 82BDC3DF-6864-454F-AA6D-F59B05865FEF Device Start End Sectors Size Type /dev/sda1 2048 1050623 1048576 512M EFI System /dev/sda2 1050624 1448617983 1447567360 690.3G Linux filesystem /dev/sda3 1448617984 1465147391 16529408 7.9G Linux swap

ls -alt /var/crash output:

total 8 drwxrwsrwt 2 root whoopsie 4096 Aug 21 09:35 . drwxr-xr-x 14 root root 4096 Aug 1 14:34 ..

grep -i Temperature_Celsius /var/log/syslog output:

Aug 21 09:35:49 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 109 to 115 Aug 21 09:57:55 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 115 to 109 Aug 21 15:33:14 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 109 to 111 Aug 21 15:57:54 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 111 to 107 Aug 21 16:27:54 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 107 to 106 Aug 21 16:57:54 AdamPC smartd[1032]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 106 to 105 Aug 21 18:21:06 AdamPC smartd[1024]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 105 to 111 Aug 21 18:51:06 AdamPC smartd[1024]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 111 to 109 Aug 21 19:21:07 AdamPC smartd[1024]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 109 to 106 Aug 21 20:26:28 AdamPC smartd[1024]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 106 to 113 Aug 21 21:07:26 AdamPC smartd[998]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 113 to 114

Screenshot showing that my disk isn't burning:

Uninstalling tlp did not solve this problem. My computer suddenly turned off again. This is the syslog output before suspend:

Aug 26 14:03:45 AdamPC NetworkManager[1012]: <info> [1503745425.2165] manager: sleep requested (sleeping: no enabled: yes) Aug 26 14:03:45 AdamPC NetworkManager[1012]: <info> [1503745425.2166] manager: sleeping... Aug 26 14:03:45 AdamPC NetworkManager[1012]: <info> [1503745425.2166] device (wlp2s0): state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37] Aug 26 14:03:45 AdamPC NetworkManager[1012]: <info> [1503745425.2314] manager: NetworkManager state is now ASLEEP Aug 26 14:03:45 AdamPC wpa_supplicant[1172]: nl80211: deinit ifname=wlp2s0 disabled_11b_rates=0 Aug 26 14:03:46 AdamPC systemd[1]: Reached target Sleep. Aug 26 14:03:46 AdamPC systemd[1]: Starting Suspend... Aug 26 14:03:46 AdamPC systemd-sleep[6098]: Failed to connect to non-global ctrl_ifname: (nil) error: No such file or directory Aug 26 14:03:46 AdamPC systemd-sleep[6099]: /lib/systemd/system-sleep/wpasupplicant failed with error code 255. Aug 26 14:03:46 AdamPC systemd-sleep[6098]: Suspending system... Aug 26 14:28:55 AdamPC rsyslogd: [origin software="rsyslogd" swVersion="8.16.0" x-pid="1036" x-info="http://www.rsyslog.com"] start

The first line in the excerpt is when I closed the lid (triggered the suspend). The last line of the excerpt is when I powered on the laptop after the accident (See the timings). Weird thing, I get the same log when having a normal suspend. Complete syslog: http://pasted.co/7354277e

Important Update

I reinstalled tlp after finding that it is not the cause of the problem. Now I noticed something that might help us scope down the problem. I can replicate the accident by suspending the system and while suspending it, I attach/detach my mouse repeatedly (or any USB device). Once I do that, the accident happens immediately. This can only be replicated while tlp is installed. I guess tlp makes it happen more consistently?

The Update That Solved The Problem

I resumed debugging today. Launched my eyeballs towards /var/log/syslog until I finally found something worthy:

Sep 5 20:19:20 AdamPC kernel: [ 167.044965] pci_pm_suspend(): hcd_pci_suspend+0x0/0x30 returns -16 Sep 5 20:19:20 AdamPC kernel: [ 167.044971] dpm_run_callback(): pci_pm_suspend+0x0/0x150 returns -16 Sep 5 20:19:20 AdamPC kernel: [ 167.044973] PM: Device 0000:00:14.0 failed to suspend: error -16 Sep 5 20:19:20 AdamPC kernel: [ 167.044975] PM: Some devices failed to suspend, or early wake event detected

Device 0000:00:14.0? Let's run lspci :

00:14.0 USB controller: Intel Corporation 8 Series USB xHCI HC (rev 04)

Made some google search and found the solution in ArchWiki. Look at my answer for the solution.