Using TV screens as monitors (how to fix overscan/zoom) 57 I have a fairly cheap and generic 32″ LG 1080p screen connected to my media computer (a Mac Mini) as a backup to the projector which doesn’t work well during the day time.
I have a mac mini running windows 8 these days, but it is the same issue on OS X regardless.
There are a variety of ports on the back of the mini, and currently I'm using a thunderbolt connection that uses a converter to VGA. I have the exact same two TV's, Samsung SyncMaster TA550. The the VGA resolution for my first screen is perfect, crisp. But the second monitor uses a hdmi cable as there is only one thunderbolt port. But this display doesn't fit the screen and is also a little blurry.
Both according to windows 8 are displaying the exact same resolution but different results.
Any ideas on a fix?
samayres1992samayres19922 Answers
Thunderbolt can support 2560x1600, mac mini hdmi can only go upto 1920x1200.
The tv is scaling it down and distorting the aspect at the same time.
Fix:
- You need to turn off the auto scaling on the tv source with hdmi (Doubtful)
- Or lower the mac mini resolution to 1920x1200 (Probable)
- Or Daisy chain the display (Maybe)
What worked for me was to dial down Underscan in the display preferences
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The HDMI port on my MacBook Pro doesn't seem to be functioning normally.
When I plug it into the TV, the screen temporarily turns black as if it is connecting to the TV, the mirror connection even comes up and I can see the other display (My Tv) and change the settings.
However, on my TV it shows a No Signal message. What is the reason for this? When I hook my Xbox 360 up via the same port, it works flawlessly on the TV. This leads me to believe the is a problem with my laptop. It was just working a couple of days ago, and detects the external device just fine. What is the reason for the No Signal/black screen issue?
Which Tv Best For Movies
2 Answers
- could be a hdmi cable issue
- maybe restart your computer. in OSX 10.9 Mavericks has some issue with dual monitoring, restart without the video cable plugged in . once its fully started, try plugging in the video cable again.
Based on your repair attempts
It is not
..the HDMI cable
..the TV
...the TV input source selector
It starts the connection to the TV but then it shows 'no signal'
all this leads to the display settings on your Mac.
Somehow or something has changed those settings, so while connected look the display settings for the TV.
Also make sure your Mac correctly identifies the TV model (Sharp, Samsung ect.) in About this Mac for example.
Additionally there is a little app on your Mac Utility folder called ColorSync Utility, use it to verify and repair the settings.
Here is a screen shot (without TV connected)
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protected by Community♦Feb 6 '15 at 5:35
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