ubuntu 18.04 freezes randomly

[Mariusz Bronowicki]

unable to do anything,

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-45-generic 4.15.0-45.48
ProcVersionSignature: Ubuntu 4.15.0-45.48-generic 4.15.18
Uname: Linux 4.15.0-45-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: godzill22 1619 F.... pulseaudio
 /dev/snd/controlC0: godzill22 1619 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Fri Feb 8 23:28:34 2019
InstallationDate: Installed on 2018-12-22 (48 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
MachineType: ASUSTeK COMPUTER INC. VivoBook_ASUS Laptop X505ZA_K505ZA
ProcFB: 0 amdgpudrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-45-generic root=UUID=45dac615-9bbf-4809-8615-e47376e42226 ro quiet splash vt.handoff=1
RelatedPackageVersions:
 linux-restricted-modules-4.15.0-45-generic N/A
 linux-backports-modules-4.15.0-45-generic N/A
 linux-firmware 1.173.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/01/2018
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: X505ZA.305
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: X505ZA
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrX505ZA.305:bd06/01/2018:svnASUSTeKCOMPUTERINC.:pnVivoBook_ASUSLaptopX505ZA_K505ZA:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnX505ZA:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.family: VivoBook
dmi.product.name: VivoBook_ASUS Laptop X505ZA_K505ZA
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.

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

This change was made by a bot.

[Kai-Heng Feng (kaihengfeng)]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v5.0-rc7 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".

Thanks in advance.

[0] https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.0-rc7/