The reproduction is quite simple and it may be reproduced in both Mate 20.04 and Mate 20.10.
Just open any image in Gimp 20.10.18 and try to apply the "Unsharp mask" filter. Once selected from the menu, the whole system just reboots.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu50.2
Architecture: arm64
CasperMD5CheckResult: skip
CurrentDesktop: MATE
DistroRelease: Ubuntu 20.10
ImageMediaBuild: 20201028
Package: gimp 2.10.18-1build2
PackageArchitecture: arm64
ProcVersionSignature: Ubuntu 5.8.0-1007.10-raspi 5.8.14
Tags: groovy
Uname: Linux 5.8.0-1007-raspi aarch64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip gpio i2c input lpadmin lxd netdev plugdev sambashare spi sudo video
_MarkForUpload: True
modified.conffile..etc.default.apport:
# set this to 0 to disable apport, or to 1 to enable it
# you can temporarily override this with
# sudo service apport start force_start=1
enabled=0
mtime.conffile..etc.default.apport: 2020-11-28T13:22:14.088767
Thank you for taking the time to report this bug and helping to make Ubuntu better. Please execute the following command only once, as it will automatically gather debugging information, in a terminal:
apport-collect 1906237
When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https:/