Thanks Daniel.
Yes, this is a touchscreen with B&O logo.

Now, how do I change the BIOS mode please?

Attached are screenshots of the current HP info re Boot, BIOS, and UEFI.
 BIOS_Boot.zip
<https://drive.google.com/file/d/1jxKGsny6qstFckdI75N1oHDRrBTbBZ-C/view?usp=drive_web>


Regards,
Glenn Stewart


On Wed, Jan 20, 2021 at 3:00 PM Daniel van Vugt <email address hidden>
wrote:

> Thanks. That confirms there is no EDID coming from the screen, so Linux
> has to guess about the signalling method.
>
> Turns out you're not the first to encounter this bug:
>
>   https://bugs.freedesktop.org/show_bug.cgi?id=97822
>
> So the good news is the hardware is not faulty but just unusual.
>
> One user says:
>
> > I have an HP EliteOne 800 G2 23-in Non-Touch All-in-One PC which
> > also has the Bang & Olufsen logo at the top left of the screen.
> > I have the exact same problem as described with the graphics. When
> > I switch from BIOS mode (default) on the computer to UEFI mode the
> > graphics started to work as expected.
>
> However note that changing the BIOS mode probably requires reinstalling
> Ubuntu after that. Still, it sounds well worth trying.
>
> ** Summary changed:
>
> - DIsplay is limited to top half of the screen
> + [HP EliteOne 800 G2 23-in Touch AiO] Display is limited to top half of
> the screen
>
> ** No longer affects: mutter (Ubuntu)
>
> ** Changed in: linux (Ubuntu)
>        Status: Incomplete => Confirmed
>
> ** Changed in: linux (Ubuntu)
>    Importance: Undecided => Medium
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1906086
>
> Title:
>   [HP EliteOne 800 G2 23-in Touch AiO] Display is limited to top half of
>   the screen
>
> Status in Linux:
>   Unknown
> Status in linux package in Ubuntu:
>   Confirmed
>
> Bug description:
>   Display is limited to the top half of the screen.
>   I have tried changing the resolution, without success.
>
>   I am attempting to trial Ubuntu 20.10 from a USB stick.
>
>   ProblemType: Bug
>   DistroRelease: Ubuntu 20.04
>   Package: xorg 1:7.7+19ubuntu14
>   ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
>   Uname: Linux 5.4.0-42-generic x86_64
>   NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
>   ApportVersion: 2.20.11-0ubuntu27.4
>   Architecture: amd64
>   BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
>   CasperMD5CheckResult: pass
>   CasperVersion: 1.445.1
>   CompositorRunning: None
>   CurrentDesktop: ubuntu:GNOME
>   Date: Sat Nov 28 04:09:34 2020
>   DistUpgraded: Fresh install
>   DistroCodename: focal
>   DistroVariant: ubuntu
>   ExtraDebuggingInterest: Yes, if not too technical
>   GraphicsCard:
>    Intel Corporation HD Graphics 530 [8086:1912] (rev 06) (prog-if 00 [VGA
> controller])
>      Subsystem: Hewlett-Packard Company HD Graphics 530 [103c:8058]
>   LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64
> (20200731)
>   MachineType: HP HP EliteOne 800 G2 23-in Touch AiO
>   ProcEnviron:
>    PATH=(custom, no user)
>    XDG_RUNTIME_DIR=<set>
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz
> file=/cdrom/preseed/username.seed maybe-ubiquity quiet splash ---
>   SourcePackage: xorg
>   Symptom: display
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   dmi.bios.date: 12/24/2019
>   dmi.bios.vendor: HP
>   dmi.bios.version: N11 Ver. 02.45
>   dmi.board.name: 8058
>   dmi.board.vendor: HP
>   dmi.board.version: KBC Version 05.39
>   dmi.chassis.asset.tag: AUD6100LCF
>   dmi.chassis.type: 13
>   dmi.chassis.vendor: HP
>   dmi.modalias:
> dmi:bvnHP:bvrN11Ver.02.45:bd12/24/2019:svnHP:pnHPEliteOne800G223-inTouchAiO:pvr:rvnHP:rn8058:rvrKBCVersion05.39:cvnHP:ct13:cvr:
>   dmi.product.family: 103C_53307F G=D
>   dmi.product.name: HP EliteOne 800 G2 23-in Touch AiO
>   dmi.product.sku: T6T88PA#ABG
>   dmi.sys.vendor: HP
>   version.compiz: compiz N/A
>   version.libdrm2: libdrm2 2.4.101-2
>   version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1
>   version.libgl1-mesa-glx: libgl1-mesa-glx N/A
>   version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2
>   version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
>   version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
>   version.xserver-xorg-video-intel: xserver-xorg-video-intel
> 2:2.99.917+git20200226-1
>   version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/linux/+bug/1906086/+subscriptions
>