I couldn't tell from that link if it actually resolved the issue.
Usually I try switching to/from Wayland/Xorg to the other when I have display problems. 
You can have both installed and switch back and forth in the window manager when you login. 
For the longest time I had Wayland issues on Fedora with the video card in my machine; but it's working now.
JD
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On Sat, Jul 31, 2021 at 1:31 PM greg zegan via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
https://forums.debian.net/viewtopic.php?f=6&t=142764



On Saturday, July 31, 2021, 04:28:48 PM EDT, greg zegan <gjzegan@yahoo.com> wrote:


tried that.
no change. there is no option in settings.
I have found others have same issue with HP machines.



On Saturday, July 31, 2021, 02:36:26 PM EDT, greg zegan via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:


Let me see if I can adjust the settings.
Yes I did flip the machine, but it goes right back to the way it was after I set it down.
crazy.

On Saturday, July 31, 2021, 01:24:43 PM EDT, greg zegan via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:


Hello,
  The other day I installed a fresh copy of Debian 10 on my HP 840 laptop.  Previously I had Debian 9 on it and had a kernel
panic error which crashed the system.  I ran the fdsk command to try and restore it but as of today its still down.

I put in a new hard drive and ran through the install.  Now when I try and log in the screen is upside down.  I am not sure what happened.  Maybe the OS thinks this is a computer pad device or something.  Does anyone know how I can fix this?  I can log in as 
either root or myself.

please advise.
thanks,
Greg

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