This all started when I had my laptop connected to my TV via HDMI and changed the display setting to “Show only on 2”. I then remember opening my laptop and the internal display wasn’t working, but when the external display did. It doesn’t appear to be a hardware issue with the laptop screen itself as sometimes it’ll randomly work, I’ve updated the integrated graphics (Intel UHD Graphics 620) and also the other one (Nvidia MX150). That did seem to get it to work for a bit then I closed the laptop lid to put it to sleep and went back to the same issue. Also up to date with all the most recent windows updates (Windows 11, 10.0.22631), there’s one new BIOS update on the acer website but it’s purely for security.
I’ve tried booting in safe mode and bios to reset to default settings, booting in safe mode seemed to get the screen to work once but it hasn’t since. What worked most recently was to roll back the integrated graphics to basic display, delete all the monitors including hidden, and then update the graphics back to the most recent version whilst disconnecting and reconnecting the external monitor. Sometimes this gets the monitor to turn back on, other times it just detects the monitor on device manager but the internal monitor is still off. When this happens on the display settings it shows both monitors with “Show only on 2” when I try change it, it asks to keep or revert and after clicking “keep changes” the setting just reverts to “Show only on 2”.
Additionally, I’ve deleted the below registry keys to now avail, even deleting the whole “GraphicsDrivers” and resetting the laptop with no difference. To me, it seems like the “Show only on 2” is the cause as it always reverts to this setting when it detects both monitors, but I don’t know how to change this. If anyone can provide some input it’d be greatly appreciated, been searching for solutions for the last week, thanks.
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlGraphicsDriversConfiguration
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlGraphicsDriversConnectivity
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlGraphicsDriversScaleFactors
