For some reason, debian-user rejected this post (and will inform me in due course), so I'm posting it again.
On Wed 08 Jan 2020 at 08:28:35 (-0600), David Wright wrote: > On Wed 08 Jan 2020 at 14:24:12 (+0100), Felmon Davis wrote: > > I was trying to get a second monitor (a tv) to work using xrandr. I > > noticed that the screen on the laptop would suffer severe, almost > > 'psychedelic', effects if I hit a certain setting. > > > > unfortunately I don't recall the setting but the ill effect was > > consistent and rendered the display nearly unreadable. and the only > > solution was to end the session. > > > > then by accident I hit the 'save this configuration' key and now the > > setting is permanent. > > > > btw I created a second user and it doesn't suffer from the problem. > > > > I cannot find a way to restore the proper display setting. there's no > > configuration file I can find for xrandr. > > > > it's an Asus Zenbook with Intel HD graphics. > > > > I am considering shifting to the second user and grappling with the > > UID and GID changes. I ultimately want to get back to using the > > original username. > > > > surely there is a simpler solution. perhaps purge xrandr? > > It sounds to me more like a Desktop problem: I don't know how to make > the effects of xrandr stick like that. > > I would investigate where the settings are being kept by: > > 1) check you have a bash prompt available somewhere, eg a VC. > 2) make some change with xrandr (any change). > 3) save the configuration. > 4) run the line: find ~ -type f -mmin -3 > > where 3 is the number of minutes within which you saved the configuration. > It will print the names of any files under your home directory that > have been modified within the last three minutes. > > Not running a DE, I can't be more specific than that. > > Cheers, > David.