Q: Yosemite - login screen on low res

I've exactly the same problem. The login screen resolution is low and different from the desktop screen.

Same here. If you log out, then it shows OK. If you restart, it shows low resolution again. Just an annoyance, but it would be nice to have it fixed soon.

Try resetting  PRAM.

http://support.apple.com/kb/PH18761

That was the first thing I tried… with no luck. After login the desktop changes the resolution. I do a log-out and then the windows is “normal”.

My machine sports also a "black" background with white Apple logo and progress bar. Happens to you too?

Same issue here.  The initial apple logo changes size and I then arrive at the login screen in a low resolution.  Setting the Pram has not resolved it

same here and its really annoying btw i have a retina macbook pro late 2013.

login screen appears in retina resolution after i logged in it changes the resolution what i choosed before (1680x150 hidpi - to have more space on 13")

so please fix it, since it not so smooth and annoying with a Macbook...

Also experiencing this on my Late-2013 15" rMBP...it wasn't present during the early OSX 10.10 betas but has been persistent over the last few and now with the full release.

I have done a full, clean install as well to see if something was fubared in the settings but nope. What a really silly issue to have. 10.10 wasn't ready for primetime, these aren't the type of bugs that people should be experiencing.

What I can say though is that for me, this issue is limited to when i'm using an external display. If I use my laptop without anything connected externally it doesn't happen.

I have been using an external monitor, though this happens wether it is plugged in or not.  Also since this started happening the resolution on the external monitor (when used ) is corrupt

actually i think its not depending on whether external monitor plugged in or not.

i havent been using external monitor since i travelling a lot furthermore the issue is always shown

you can also check out wham im talking about on the following link:

VIDEO (youtube)

Yes exact same issue

Wow, I wish my issue was only that bad....here's what mine looks like

https://www.youtube.com/watch?v=w-juwl4HiGY&feature=youtu.be

Sorry, wrong URL...

http://youtu.be/hO1YZAh4lIE

i really hope that Apple will make a new update to fix these problems.

furthermore have everybody got the same problem with micro laggs? like on the following: VIDEO

it seems like an old pc not just a (2013 late) retina macbook pro. im so disappointed with the yosemite