You must be a Windows refugee.Woah! Never seen anything like that. Try restarting it again. If that doesn't work, try reinstalling macOS via "Erase All Content and Settings," and if that doesn't work, completely wipe the drive from Recovery and reinstall.
Have you tried something simple like changing the login wallpaper to something else to see if the same problem occurs with a differernt wallpaper? Or perhaps create another user and see if the same thing happens for them.
yup - no changeHave you tried powering off the iMac? Sometimes glitches like this will survive a reboot.
yup no changeHave you tried something simple like changing the login wallpaper to something else to see if the same problem occurs with a differernt wallpaper? Or perhaps create another user and see if the same thing happens for them.
no such software, no file vault, nothing in login apps etcDo you have any remote controlled software installed that allows another computer to connect? Certainly Jump Desktop Connect causes funny things on my login screen at times, mainly the the user names shifted to the side.
This is a stretch since you probably have File Vault turned on, so no deamon would be running prior to first login after reboot.
Notice that the login field and buttons are centered and that the picture is actually cropped on the left (I just checked that desktop image to notice the missing portion). It's almost as if that image has been corrupted on disk.
I will try. A full reinstall is not worth my time / effort as everthing else is working fine and I have a mountain of plugins (its an audio computer) that would need reinstalling and authenticating!You can not reset PRAM/NVRAM on an M1 Mac. Also, you can not reset the SMC on an M1 Mac, as they don't have SMCs.
I've already had this discussion with the OP, and they said it's too cumbersome to reinstall macOS.
So, @drxcm, run Disk Utility First Aid inside recoveryOS - see if that works.
This is a bit of a tricky situation here - some posters are posting things that the OP has already tried that didn't work, such as restarting. But I have to say that the OP should not be hindered by "not wanting to do something." If that fixes the issue, then great, but you sometimes have to do something you don't want to do to fix a problem!
When you say no changes does that mean that a different wallpaper shows the same white area on the left but with the different wallpaper, or that the wallpaper itself just stays the default Monterey wallpaper with the white area on the left in the image?yup no change