Gpu hang on 5.8 i915. Does not happen on 5.4

[Lily Rivers]

[15234.344805] i915 0000:00:02.0: [drm] signal-desktop[17329] context reset due to GPU hang

System gets very slow when it happens. Takes a few hours to happen.

ProblemType: Bug
DistroRelease: Linux Mint 20
Package: linux-image-5.8.0-23-generic 5.8.0-23.24~20.04.1 [origin: Ubuntu]
ProcVersionSignature: Ubuntu 5.8.0-23.24~20.04.1-generic 5.8.14
Uname: Linux 5.8.0-23-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: X-Cinnamon
Date: Fri Oct 23 12:16:00 2020
InstallationDate: Installed on 2017-12-03 (1055 days ago)
InstallationMedia: Linux Mint 18.3 "Sylvia" - Release amd64 20171124
SourcePackage: linux-signed-hwe-5.8
UpgradeStatus: No upgrade log present (probably fresh install)