brightness controls and screen blanking not working properly

[bzb001]

using 20.04 on a HP laptop
When using the brightness control to dim the display, the display brightness remains the same even though the image is faded
When the screensaver is activated to blank the screen, the display remain bright even though the image is a a dark blank image.
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ProblemType: Bug
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
DistroRelease: Ubuntu 20.04
InstallationDate: Installed on 2020-05-10 (0 days ago)
InstallationMedia: Lubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Package: xscreensaver 5.42+dfsg1-1ubuntu1
PackageArchitecture: amd64
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Tags: focal
Uname: Linux 5.4.0-29-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True

[Chris Guiver (guiverc)]

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 1875787

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://wiki.ubuntu.com/ReportingBugs.

[Chris Guiver (guiverc)]

Possibly related - https://bugs.launchpad.net/ubuntu/+source/lxqt-config/+bug/1829641

[bzb001 (bzb-dev001)]

apport information

[bzb001 (bzb-dev001)]

apport information

[bzb001 (bzb-dev001)]

apport information