Thunderbolt to DVI to projector scaling

The image on my Canon SX80 is small and un-zoomable when connected to the thunderbolt port through the adapter that I got with an earlier macbook pro.
When I backed off to the Macbook pro with the same cable and configuration the dispplay behaved normally. In each case, the resolution of the display set in keynote was 1400x1080, the display's native resolutiion.
Is this behavior due to the connector, the Thunderbolt characteristics, or something else? At this point, I am going to just use the older laptop instead of the Air.
Glad I didn't sell it when I bought the Macbook Air.

Hello,
From the news page here...
http://xlr8yourmac.com/
See if it's related to this...
It also seems to be related to later OSX versions, like 10.8.x & 10.9.x
The 2012 macs (and later apparently) (also later OSX versions on earlier Macs can do it also), not waking normally from sleep after hours being in sleep. (noted here ...
http://www.xlr8yourmac.com/archives/feb13/022813.html#2012macswontwake
"Why 2012 iMac/2012 Mac Mini won't Wake After Hours of Sleep (Hibernates/Powers Off)")
The sleepimage file still reappears even if never slept. Delete it (hibernate off, etc) - within minutes its back.
A note on that here - http://www.xlr8yourmac.com/feedback/Chameleon_SSD_Optimizer.html
About iMac sleep...
http://forums.macrumors.com/showthread.php?t=1529750
Try this: "sudo pmset autopoweroff 0" and "sudo pmset standby 0"
http://xlr8yourmac.com/archives/sep13/091313.html#10.8.5SleepEjectTip
Two users reported that the opposite worked...
Try this: "sudo pmset autopoweroff 1" and "sudo pmset standby 1"

Similar Messages

Why doesn't thunderbolt-to-dvi-to-vga work?

Macbook Pro (Mid 2011), Mountain Lion, latest version.
I am trying to use an external VGA display from my MBP. Thunderbolt to DVI output works fine. I don't have a Thunderbolt to VGA adapter, so I connected a DVI to VGA adapter to the DVI end of the Thunderbolt to DVI adapter. I get no output in this arrangement, and the MBP does not seem to notice that anything is connected. I've checked the projector and the DVI to VGA adapter, and both are as they should be. Is there some reason this combination doesn't work, and can I do anything to fix it?

fadecomic wrote:
I found out. The Thunderbolt port is digital only, whereas a DVI port outputs analog and digital. There is no analog signal at the DVI end of the Thunderbolt to DVI adapter, so the DVI to VGA adapter has nothing to pass along.
I was wondering if that was the answer but I wasn't sure, so I appreciate that you came back and let everybody know that was the case.

New Mac Mini thunderbolt to DVI adapter issues

Hi there,
I'm working on a new studio installation. We have a new Mac Mini that we're trying to connect up to a 30-inch Cinema HD display with DVI input. We have a Kanex C30 Mini DisplayPort to Dual-Link DVI adapter that plugs into the Thunderbolt port and one of the USB ports (for power) on the back of the Mini, but despite our best efforts we aren't getting anything on the display. Going Mac - adapter - display results in about 7/8ths of the screen going white and displaying two green and misshapen Apple logos for about 5 seconds before it goes blank.
Ultimately we want to run it over quite a long DVI cable and currently have an Extron signal booster in place, which works perfectly from the Mac Mini's HDMI output through an HDMI to DVI adapter. However we're already using the HDMI output to feed another monitor.
So two questions really:
1. Can the Mac Mini feed two separate displays of different sizes? The 30-inch over Thunderbolt to DVI and another Apple 24 inch display over HDMI to DVI.
2. Does anybody have any experience with the Kanex or can you recommend an adapter that will work for us?
Any suggestions would be greatly appreciated. This whole process has been a very long headache!
Many thanks,
Josh

Hi Josh,
It should work, but not Mirrored of course, just Extended Display...
Video Card:
HD Graphics 4000
VRAM Type:
Integrated
Details:
This model has an Intel HD Graphics 4000 graphics processor that shares memory with the system. Also see: What type of video system is provided by the Aluminum Mac mini models? Which are integrated and which are dedicated? Can the video be upgraded?
Standard VRAM:
512 MB*
Maximum VRAM:
768 MB*
Display Support:
Dual Displays
Resolution Support:
1920x1200*
2nd Display Support:
Dual/Mirroring*
2nd Max. Resolution:
2560x1600*
Details:
*This model simultaneously supports 1920x1200 on an HDMI or a DVI display (using the included HDMI-to-DVI adapter) and 2560x1600 on a Thunderbolt or Mini DisplayPort display or even a VGA display (with an optional Mini DisplayPort-to-VGA adapter, which is compatible with the Thunderbolt port).
http://www.everymac.com/systems/apple/mac_mini/specs/mac-mini-core-i7-2.6-late-2 012-specs.html

2 Monitors via 2 Thunderbolt-to-DVI adapters to Macbook pro Retina.

I own a 2012 Macbook pro retina, and I'm looking to buy two non-apple monitors. Now I've been wondering whether it would be possible to use my 2 thunderbolt ports and attach each with a thunderbolt-to-DVI adapter, and thereby connect the 2 separate external non-apple Monitors.

Yes, that would work just fine.
Clinton

Why do my speakers make a loud hissing/white noise when the aux cable is plugged in at the same time my thunderbolt to dvi adapter/cable is plugged in?

I have tried this with headphones and speakers and the result is the same. I have tried this with multiple displays, multiple thunderbolt to dvi adapters, and multiple dvi cables. Does anyone know if there is a way to fix this? Thank you in advance!

What's on the other end of the Aux cable

Mini DVI to Projector Problems

I could use some help figuring out why this setup isn't working...
I'm trying to connect my (early 2009) Mac Mini to my Optoma Projector. The projector isn't getting a signal at all. I already have a 50ft VGA cable running through my attic, so I'm trying to work with that. Here is the signal path I'm trying to run:
Mac Mini mini-DVI port <-> mini-DVI to VGA adapter <-> VGA Cable <-> VGA to DVI-I adapter <-> DVI-A input on projector
The same setup worked when I had a PC laptop VGA output <-> VGA Cable <-> VGA to DVI-I adapter <-> DVI-A input on projector. Therefore, I know the DVI-I adapter and the DVI-A input work properly and play well together.
I tried connecting my Black Mac Book instead of the Mac Mini, and the projector still gets no signal. Since the laptop has its own display, it allowed me to see in the Display panel that the computer in fact 'sees' the Optoma HD72 as a secondary display.
Any ideas to get this thing working?

50 ft. of VGA cable is a pretty long run. The obvious thing to try would be to shorten up that cable and see if it works. I'm guessing that can't be a final solution for your setup, but it's something to try to determine if, in fact, the mini doesn't have enough drive for that length cable run. The problem is more likely with the sync drive level, not the video drive level. So the projector isn't getting sync. That would be my guess. If that is the issue, then you could look into getting a VGA signal amp/booster as a solution.
Is driving digitally an option? Sometimes it can be easier to push digital over those distances, though it's by no means guaranteed. One advantage to digital is that, if it works, it works. There is no degradation. With analog, the signal that arrives at the projector is not the one that left the mini. Not at that distance.

Can I use a thunderbolt to DVI adapter to connect my NEC montor to my MAC MINI?

I guess I can turn the question around and ask how many differnt ways are there to attach a monitor to a MAC MINI?

It should work if the NEC is DVI.
Other ways are expensive Apple Thunderbolt Monitor, or these..
http://eshop.macsales.com/item/NewerTech/VIDU2DVIA/
Resolution:
Supports resolutions up to 2048 x 1152 including SDTV/HDTV resolutions: 480i/p (640x480), 720p (1280x720), 1080i/p (1920x1080)
Macintosh:
Intel based Mac OS X 10.4.11 and above
(not compatible with PowerPC based Macs)
Supports up to four monitors

My MBP Retina doesn't allow the use of two Thunderbolt to DVI adapters. It only works with one TB - VGA adapter and one TB - DVI adapter. However now the color on the VGA connected monitor is slightly different.

The monitors are Viewsonic VA2406m-LED. The Display preferences show all three monitors but one monitor always says "No Signal" if they are both connected TB -> DVI.
The Color on the VGA connected one is slighly off. It seems like I should be able to connect two DVI monitors not sure why this is stopped. Does it have something to do with the Graphics card?

The problem was with the newEgg adapter. I just went to the Apple Store and bought an Apple adapter and the monitor now displays correctly.
For future reference, in case anyone experiences this problem:
the newEgg adapter is part number 9SIA1PU0P88920, described as a Thunderbolt Mini Displayporrt Display Port DP to DVI Adapter for APPLE Macbook Pro Air and the full description says it works for macbook pro, etc.
when this adapter is used, the macbook pro recognizes the monitor, but the monitor displays nothing.
When the apple adapter (MB507Z/B Mini Display Port to DVI Adapater) is used, the monitor displays correctly.
Of course, the individual newEgg part might simply be defective, but I doubt it. moral -- spend the extra $$ and buy the Apple adapter.

Macbook mini-dvi -- VGA projector problems

Hi
At the school i teach at we have problems hooking up our new macbooks to one of our projectors. We use a mini-dvi --> VGA cable to hook up the projector. The mac recognises the projector and it gets listed under screens, the resolution also changes. But no picture is beeing projected by the projector.
If we use a mini-dvi --> s/video/rca cable it works fine, but the quality of the picture is too low. The projector works nicely with the older macs we have, wich use the mini-dv --> vga cable.
Any toughts on what may be the problem, or what we could try?

I am having the same problem. I have to do powerpoint presentations at college and it was so embarrassing to go up there and my macbook not sync up. It use to work. I even bought a new adapter. It did not fix the problem. All the windows laptops were able to sync up to the projector but mine did not. This one one of the main reasons I bought a macbook. I need to take my work to school and connect to projectors. I am using the mini-DVI to VGA adapter. There appears to be no physical damage. When I click detect displays nothing happens. Now I have to redo everything on windows. Please, I hope someone has a fix for this. I am using the following; 2 GHZ Intel Core 2 DUo, 1 GB RAM, Mac OS X 10.4.10

Mac mini cannot dect view sonic monitor with thunderbolt-to-dvi interface

Mac mini cannot dect View Sonic VX1035wm display with Thunderbolt port-to-DVI-D interface.

Hi warlotte,
Thanks for contributing to the Apple Support Communities.
If you have an Apple Mini DisplayPort to DVI adapter, it can be used with the Thunderbolt port on your Mac to connect an external display.
For more information, see this Frequently Asked Questions document:
Apple Mini DisplayPort adapters: Frequently asked questions (FAQ) - Apple Support
Some Apple computer have a Thunderbolt port instead of a Mini DisplayPort. Computers with a Thunderbolt port will have the following symbol next a port although the port physically appears the same as a Mini DisplayPort:
Thunderbolt ports:
Are compatible with all of the Mini DisplayPort adapters referenced below in question 5 and with Apple Mini DisplayPort equipped displays.
Note that "question 5" mentioned refers to section 5 of the above FAQ, which has a list of Mini DisplayPort adapters that are available from Apple.
Best Regards,
Jeremy

Chaining 2011 MBA to Seagate GoFlex Thunderbolt to DVI monitor

Hello Chaps,
I'm currently using a macbook air with an adapter to connect my LG 24" LCD panel. What I am wondering is if I can take advantage of the thunderbolt port for my external drive using the Seagate dock (GoFlex Desk STAE127) then chain onwards using the Apple Mini DisplayPort to DVI Adapter.
Any help would be appreciated.

Hi there.
I have just tried this now, and yes it does work :-)
Macbook Air - connect to Seagate GoFlex Thunderbolt (Using TB cable)
Seagate Goflex Thunderbolt passthrough to a Dell 24 Inch monitor (using Apple Mini DisplayPort to Dual-Link DVI Adapter cable).
Both the Seagate GoFlex and the Dell 24 inch monitor work :-)

DVI to Projector... 1080i???

I just got my MacBook and made sure that the first accessory I got was the mini-DVI to DVI adapter so I can hook my computer up to my Sanyo HD Projector. Unfortunately, I cannot get a high-definition signal (1080i preferably). I used to hook up my PC desktop using component video and get 1080i without a problem. Now the "it just works" factor I was looking forward to in the MacBook doesnt seem to be pulling through. Any ideas? I've looked at DisplayConfigX but dont really understand what settings to try.
Also, the MacBook recognizes the projector, name and all, but only outputs at 1024x768 or lower, I dont receive any options for a 16:9 resolution, let alone 1080i.
Thanks,
Mike

I just got my MacBook and made sure that the first accessory I got was the mini-DVI to DVI adapter so I can hook my computer up to my Sanyo HD Projector. Unfortunately, I cannot get a high-definition signal (1080i preferably). I used to hook up my PC desktop using component video and get 1080i without a problem. Now the "it just works" factor I was looking forward to in the MacBook doesnt seem to be pulling through. Any ideas? I've looked at DisplayConfigX but dont really understand what settings to try.
Also, the MacBook recognizes the projector, name and all, but only outputs at 1024x768 or lower, I dont receive any options for a 16:9 resolution, let alone 1080i.
Thanks,
Mike

Thunderbolt to dvi ?

is there an adapter for going from TB on MacAir to a div displey?

To be clear, there is a Mini DisplayPort-to-DVI-D adapter available for older MBP's to send video from the Mini DisplayPort to a monitor (I use this adapter with my late '08 MBP).
This adapter also will fit a Thunderbolt port on your MBA to connect to a DVI-D cable to the monitor.

Is there adapter avaliable to connect thunderbolt to dvi duel link of 30" dell mon

I like the mac mini and i want to keep my 30" dell display. is there adapter avaliable to connect the thunderbolt in mac mini with the dvi duel link in the 30" dell? Any other options?

Yes. A Mini DisplayPort to dual-link DVI adapter.
(60070)

Thunderbolt and DVI splitter

I have two DVI/VGA monitors I use for work and looking to see if there is a splitter from a thunderbolt port that would let me use these with my Macbook Air. My Air does support thunderbolt displays just been trying to google such an item and not sure if its possible.
Thanks in advance.

There is this:
<http://www.matrox.com/graphics/en/products/gxm/dh2go/digital_me/>

Thunderbolt to DVI to projector scaling

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