Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Firefox blurry after DPI change even after FF restart

  • 2 replies
  • 1 has this problem
  • 14 views
  • Last reply by borekb

borekb
borekb
more options

I'm running Firefox on my laptop which is QHD+ on a small screen so the DPI *has to* be set to something like 150 or 200 %.

I also have an external monitor which runs in its native FullHD resolution and 100% DPI. Windows 10 (maybe even Win 8) do support different DPIs on different screens so that's not a problem. However, when I move Firefox from the laptop display (150% DPI) to the external monitor (100% DPI), everything becomes blurry - web content but also the UI. Not sure how well it will be seen from the screenshot but here it is:

http://snag.gy/Fz7ZS.jpg

What is strange is that this happens even if I shut down Firefox and start it again. I would expect that the restart fixes things.

Is there anything I could do to help this?

I'm running Firefox on my laptop which is QHD+ on a small screen so the DPI *has to* be set to something like 150 or 200 %. I also have an external monitor which runs in its native FullHD resolution and 100% DPI. Windows 10 (maybe even Win 8) do support different DPIs on different screens so that's not a problem. However, when I move Firefox from the laptop display (150% DPI) to the external monitor (100% DPI), everything becomes blurry - web content but also the UI. Not sure how well it will be seen from the screenshot but here it is: http://snag.gy/Fz7ZS.jpg What is strange is that this happens even if I shut down Firefox and start it again. I would expect that the restart fixes things. Is there anything I could do to help this?

All Replies (2)

Shadow110
Shadow110
more options

borekb said

I'm running Firefox on my laptop which is QHD+ on a small screen so the DPI *has to* be set to something like 150 or 200 %. I also have an external monitor which runs in its native FullHD resolution and 100% DPI. Windows 10 (maybe even Win 8) do support different DPIs on different screens so that's not a problem. However, when I move Firefox from the laptop display (150% DPI) to the external monitor (100% DPI), everything becomes blurry - web content but also the UI. Not sure how well it will be seen from the screenshot but here it is: http://snag.gy/Fz7ZS.jpg What is strange is that this happens even if I shut down Firefox and start it again. I would expect that the restart fixes things. Is there anything I could do to help this?

Yup blurry... Think this is not a FF issue but your setup. I think you would have to adjust your larger monitor to the correct DPI or over/under sampling via vid card program or Win10 when you share if it is possible.

If this solves your issue please let us know and mark as solved, G'luck

borekb
borekb Question owner
more options

Nope, it's certainly a FF issue. For instance, moving Windows Explorer from one monitor to another, or changing DPIs in Windows, everything stays crisp. Firefox, on the other hand, as well as some other "legacy" Windows apps (Paint.NET, for example), have their UI blurry until the next system reboot / sign-out, sign-in.