Toshiba Satellite A300 restarts after waking from suspend mode

[Viktor Gregor]

I suspend the laptop either by closing the lid or by GUI clicking on Suspend option (Pohotovostný režim in Slovak).
I resume from suspend either by opening the lid or by pressing the power button.
In either case the PC resumes for about a second then power goes off (I hear the hard disk going off) and the system restarts. Then it is OK.
I think that the problem started after updating the kernel to version Linux 4.15.0-115-generic (i686). Now I use the version 4.15.0-117-generic (i686).
I have never faced this problem before and I run Lubuntu on this PC for more than year.
I cannot provide information required by Ubuntu Wiki in section DebuggingKernelSuspend as I have not installed the nondaily mainline kernel.
Issuing the command "sudo cat /sys/kernel/debug/suspend_stats" I obtained the following output:

viktor@Toshiba:~$ sudo cat /sys/kernel/debug/suspend_stats
[sudo] heslo pre používateľa viktor:
success: 0
fail: 0
failed_freeze: 0
failed_prepare: 0
failed_suspend: 0
failed_suspend_late: 0
failed_suspend_noirq: 0
failed_resume: 0
failed_resume_early: 0
failed_resume_noirq: 0
failures:
  last_failed_dev:

  last_failed_errno: 0
   0
  last_failed_step:

viktor@Toshiba:~$

That's all so far.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-117-generic 4.15.0-117.118
ProcVersionSignature: Ubuntu 4.15.0-117.118-generic 4.15.18
Uname: Linux 4.15.0-117-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version k4.15.0-117-generic.
ApportVersion: 2.20.9-0ubuntu7.17
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
   Subdevices: 0/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0c: viktor 966 F...m pulseaudio
 /dev/snd/pcmC0D0p: viktor 966 F...m pulseaudio
 /dev/snd/controlC0: viktor 966 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd4700000 irq 25'
   Mixer name : 'Realtek ALC268'
   Components : 'HDA:10ec0268,1179ff1e,00100003 HDA:11c11040,11790001,00100200'
   Controls : 28
   Simple ctrls : 12
CurrentDesktop: LXDE
Date: Thu Sep 10 14:19:52 2020
MachineType: TOSHIBA Satellite A300
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-117-generic root=UUID=3c3d339c-33ce-486d-b55e-4fe4154e7815 ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-117-generic N/A
 linux-backports-modules-4.15.0-117-generic N/A
 linux-firmware 1.173.19
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/14/2008
dmi.bios.vendor: INSYDE
dmi.bios.version: 1.60
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Portable PC
dmi.board.vendor: TOSHIBA
dmi.board.version: Base Board Version
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnINSYDE:bvr1.60:bd10/14/2008:svnTOSHIBA:pnSatelliteA300:pvrPSAG8E-01L00JSK:rvnTOSHIBA:rnPortablePC:rvrBaseBoardVersion:cvnChassisManufacturer:ct10:cvrChassisVersion:
dmi.product.family: Intel_Mobile
dmi.product.name: Satellite A300
dmi.product.version: PSAG8E-01L00JSK
dmi.sys.vendor: TOSHIBA

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This change was made by a bot.

[Viktor Gregor (vgregor)]

I tested this bug with the Linux kernel version 4.15.0-112-generic (i686) that I thought was OK. It is not. My computer has problems with resuming from the suspend mode and the behaviour is not always the same. As I used the 112 version for longer time before and nothing happened, it seems to me that now it is some hardware error as my Toshiba is quite old.
I apologize for disturbing.
Please, close this bug as not relevant.