Samsung SyncMaster 305T 30" external display not recognized

after much research (apparently not enough I went with the Samsung over the Apple Cinema display. When I plug in the Samsung the Macbook flickers like it senses the external monitor, but when I tell it to detect displays, it doesn't recognize the Samsung, so I can't select it or change it's settings. Samsung tech support suggested the native resolution (1900x1200 minimum) wasn't set high enough on the Mac, which is why there was no video detected on the Samsung. They suggested I (yuck) try it on a PC. I did but the max resolution on my PC drivers is 1600x1200, so it also can't drive anything on the Samsung.
Apple support didn't have any other suggestions either.
Any ideas?

One other thing to try, with the 30" attached to the MBP, try starting in Safe mode. You do this by holding down the Shift key on the keyboard immediately after the gong sound and keep holding it until you see a message that the MBP is starting safe. See if you get a screen on the Samsung in that case. If not, I would really begin to suspect you got a bad cable.

Similar Messages

External USB not recognized on my iMac (intel) in Disk Utility, Finder as well as in Terminal diskutil list but is listed in System Profile, which includes the location ID of 0xfa400000 / 5. Can the location ID be used to restore USB identity ?

My 1TB Seagate external USB not recognized by my iMac (intel) in Disk Utility, nor in Finder as well as in Terminal "diskutil list" but it is listed within the System Profile, which includes the location ID of 0xfa400000 / 5. Can the location ID be used to restore the identity of my external USB ?

Hello JNotorious,
Thank you for using Apple Support Communities.
For more information, take a look at:
USB and FireWire Quick Assist
http://support.apple.com/kb/ht1151
Have a nice day,
Mario

Macbook (Late 2007) External Display Not Working

I have an acer x243hq 1920x1080 external monitor which works with my Xbox 360 (vga cable) and my friends macbook (early 2008) but not my macbook
when plugging the external monitor into my macbook using the minidvi to dvi adapter the macbook screen goes light blue and flashes continuously until i remove the cable, the external monitor is just black (does NOT display "no signal") when the cable is removed the cpu seems to have been running at 100%.
i have tried using my friends macbook hard drive in my macbook and the problem is still there therefore the problem must be hardware related?
i have all current updates
Thanks for any replys on how i can fix this

Have you downloaded the Mac OS X (10.5.4) Combo Update? I posted my problem, very similar to yours, and in researching it I found it at: http://www.apple.com/downloads/macosx/apple/macosx_updates/macosx1054comboupdate .html. It might just be what you need!
My problem is that I am running 10.5.7, which I blame for my external display not acting like it did when I was on 10.5.6! One expert at Apple Support told me to erase my HDD, reinstall Tiger, upgrade to Leopard again, but only to 10.5.6! Has anyone any idea as to when 10.5.8 is due out? Is there a Beta?

Photoshop and monitor profile (Samsung SyncMaster 244T with EyeOne Display 2)

I've just calibrated my Samsung SyncMaster 244T with EyeOne Display 2 and
created a monitor profile. Should I use it as the Photoshop working color
space now?
Thanks.

So my monitor profile is just for the OS, and photoshop should use either sRGB or Adobe RGB, or whatever color space specific to the output destination. So, say, if I plan to edit some files for a video slide show that I'm making using ProShow Producer I should edit those files in one of the NTSC color spaces and save that profile with the files. I used to just leave them in sRGB and saw some weird color results watching those slide shows on TV. Thanks a lot for your info, Christopher. <[email protected]> wrote in message news:[email protected].. > No. Your working space should usually be a color space with well-behaved > characteristics such as black and white points being equal RGB values, as > well as the values for grays. Your monitor profile won't be that way. Your > monitor profile will let Photoshop display colors accurately, but for > editing images, use a working space suited to the kind of editing you are > doing. > > Are you editing in CMYK, doing printing, video, editing from film scans, > etc? The best working space will depend on the source image and the > eventual output for it. > > Most people use Adobe RGB(1998) as a good compromise for a working space. > Some prefer sRGB which works well for on-screen viewing of output but less > well for print media and/or when images contain very saturated colors. > Photographers working from transparency film often use Ektaspace as their > working space.

External keyboard and display not recognized

After upgrading to Leopard, Vista doesn't see my external keyboard and display.
Any ideas?

The display was due to Boot Camp setup deleting the old driver and needing to be run a second time. It was disappointing that the external display problem wasn't fixed, but at least release 16902 finally fixed that issue.
The keyboard is recognized if I unplug and replug it, but it has to be done each time I boot Vista.

External Displays not working

My 1.67 PB suddenly stopped recognizing any external display devices I have plugged in. I have tried both the S-Video and the DVI and have repeatedly clicked "Detect Displays"... nothing. With the DVI connection, the PB screen flashes blue for a second but then goes back to normal. I have tried to restart with and without an external device plugged in. I have also tried to put the PB to sleep, plug in the external device, and wake it up... nothing.
The only thing I've done to my PB between yesterday (the last time my S-video output worked) and today was to install the Final Cut Pro 5.0.3 and Cinema Tools 3.0.3 updates via Software Update.
Does anyone have any suggestions?
Thanks,
John

It's working. I have no idea why, but I'm not complaining.
Thanks,
John

External monitor not recognized (X200)

Hi,
I have an X200 with Vista
When I connect an external monitor (or projector) it is not recognized. Shift-F7 results in a message that no external monitor is detected. However, if I leave the monitor connected, put the system in standby and then resume, it recognizes the external display.
Any thoughts to how I can get it to recognize without this work-around? Thanks

I had the same problem. I think it's a vista device driver issue. Try this-
Power down your laptop. Plug in the external monitor. Boot the computer - it should default to the external monitor, and Windows should recognize it. Then, shut down normally.
Pull the monitor cable, boot your laptop regularly, reattach the cable, and give it a try.
It worked for me.

External display not recognised in Mountain Lion OS

Hi all,
I have a Samsung Syncmaster 2443BW which I wanted to set up as extended display for my new bought Macbook Air.
I am running the latest Mountain Lion OS including the last updates.
When attached the monitor with an Apple miniDisplay port to DVI adapter it is not recognised, nor showing up in the System Preferences - displays menu.
Any help is appreciated - thanks!

If the system is from Dec. 2011 it either came with DVD discs to reinstall the original shipping version of OS X or it came with Lion preinstalled.
If Lion then you use the Online Internet Recovery system to reinstall Lion, No Password needed. To boot to the Online system at startup hold downn the Option/Alt + Command + r keys and hold them down until you see a globe on the screen. From the Mac OS X Utilities screen that comes up use Disk Utility to partition the drive as one partition, Formatted Mac OS X Extended (Journaled) with a Partition table of GUID (That is an option under the Options button). Then click the Apply button. Once that is done exit DU and select Reinstall Mac OS X.
If it came with system Reinstall discs you have to use those to reinstall OS X and the iLife apps then you can use the Mac App Store to upgrade to Lion, Mt Lion or Mavericks. Whichever version you bought from the App store perviously or Mavericks for free.

Yoga Pro 2 - Display not recognized in windows (Driver or Hardware issue?)

Out of warranty by a month!
Yoga Pro 2 - 256gb, installed new wireless card a month ago. Windows 8.1
The touchscreen still works while the screen is black.
System restarted after sleep mode I think.
The Lenovo logo is displayed, seems to load windows, but when windows loads (I don't see it load so this is an assumption) the screen blanks and the black light is on.
I can connect an external monintor which will connect after a return from sleep mode(odd). Which then turns the backlight off.
When on the external monitor the internal display is not even recognized by windows.
When I boot in safe mode, the internal screen works fine with of course limited capability.
I have reloaded display drivers from the support site.
Right now my internal monitor is not recognized by windows and is dark, and I can use an external monitor.
Anyone have any clues as to what my be going on? Hardware, driver etc???
What information can I provide?
Solved!
Go to Solution.

This is a pretty weird issue with conflicting observations.
1) Screen works in Safe Mode but not in regular boot. (So, not hardware issue)
2) Display works on external monitor in regular mode. (So, not drivers issue)
Did you install the wireless card yourself? Did you unplug the display cable while installing the card?
Could you re-open and check that all connections are good?
Is the Wi-Fi card working well?
I would also recommend a complete reset of the laptop to eliminate the possibility that this is a corrupt driver. You can use the NOVO button to reset your laptop. Make sure to make a backup on external drive for your personal files.
Current System - Lenovo Y510P, GT755M SLI, 8GB RAM, 1TB HDD + 24GB SSD
When your plans fail, your Real Story begins!!

Qosmio X770 display not recognized anymore

I just bought a Qosmio x770 about a month ago and some day when I started it the login screen never appeared.
In linux left me in command prompt and said that no screen configuration was found.
Windows said nothing but the screen remained black.
After a number of reboots it worked normally but only for a couple of hours.
Plugged to an external monitor it works.
Also when I boot in safemode (or failsafe) it works (I mean I can enter windows/linux at 640x480 resolution).
I updated the bios to the latest version 1.30. What more else to try?
It's really uncomfortable to send it back because I need it for my job (even connected to another monitor).
My hope is that the problem is not hardware related and somehow I can solve it.
Is there a chance?
Thank you!

I reinstalled the windows driver in safe mode ... and nothing.. But I didn't do anything before the problem appeared ... And linux is not recognizing the screen also. I tried to boot from an external hdd and the same problem. Fn F5 show me only the external monitor. I tried some 3d games on the external monitor and everything seem ok. When connected to hdmi linux boots up in X Windows but when running nvidia-settings there is no internal display ... only the external one.
The strange thing is that the internal display is working in safe mode ... is it possible to be damaged then?
Thank you

Laptop Built In Display and External Display not Working

Hi all, I have a HP Envy M6-1158ca, and recently my Built-in display stopped working. I plugged it into an external display via HDMI and it showed no input. It seems as though the laptop is not booting into Windows either, as usually whenever my laptop boots into windows, the fingerprint scanner blinks letting me know I can now sign in using it. I am extremly frustrated with this, and have an unbelieveable amount of stress because this was my only PC. Please respond as soon as possible, it would be much appreciated.
Thanks in advance.
This question was solved.
View Solution.

Yes.. i think thats what might have damaged it...Notebook should always be completely powered off with the battery out and ac adapter disconnected while replacing any internal hardware..
Shouldnt be a BIOS problem....but still you can check this link..
Restoring the BIOS
Note:
If you have HP Support Assistant installed on the computer(The Blue Question Mark) then open it ==> Complete all pending Updates & Tuneups==> Restart and Check. It may solve your problem
Although I am an HP employee, I am speaking for myself and not for HP.
**Click on “Kudos” Star if you think this reply helped** Or Mark it as "Solved" if issue got fixed.

External Display not working (descriptive details in post)

Hello
Background:
I have been using a black Macbook (last year's model - before the aluminum ones came out) and connecting it to a VIZIO VW22L HDTV10T (television/monitor) via a mini-DVI to VGA adapter.
This setup always worked, although it was a bit finicky (I'd have to plug it in before closing the display to get in to work in clamshell mode, for example). I get the feeling from reading other forum posts that this is the normal case, though (which so far has been my only real gripe with OS X).
Anyway, back a couple months ago I wondered if this finicky-ness was partially caused by a messed-up preference file, so I decided to try and fix this. In the ensuing tweaking, I somehow caused my Display preferences to disappear.
After much effort trying to fix the problem, I eventually called Apple support, which ultimately recommended that I reinstall OS X. I didn't do that, and continued to work at the problem. I eventually was able to bring it back by going into my Time Machine backups and restoring all the Display preference files (I used old preferences from back when I got the external HD, so I knew they'd be "uncorrupted). However, now I'm having problems with my external display, namely that it is not working.
This problem started early this year, so it might have been caused by the 10.5.5 update, but since I had all these other problems going on, I'm not sure if that was the case.
Problem:
The Macbook doesn't seem to recognize the display, or is having problems routing video to the display, or something.
If I plug the display into the Macbook while it is running normally, the Macbook LCD will flash blue (like it picked up a new display), but them come back to normal. The monitor will go out of sleep mode for a second, but then display a "No signal" message. If I attempt to "Detect Displays" the Macbook screen will either flash blue (as before) or just do nothing.
If I have the display plugged in when I start up the Macbook, everything will proceed as normal until the time the desktop would be displayed. Instead of this, I just see a blue screen (like some generic desktop before any background is applied). The menu bar, the dock, and icons do not show up. However, I can hear various audio cues telling me the computer is running fine except for htis problem (email notifier going off, etc.).
I know the problem is not faulty hardware, because when I boot my Macbook into Windows, everything works perfectly. It therefore follows that it is an OS X problem. I downloaded both Cocktail and Applejack and run various repairs on them (most notable repairing preferences), but nothing has changed.
Any suggestions about how to try fixing this? If there's any technical detail I've missed, let me know.
Thank you in advance to everyone who tries to help.
-Richard

I have same problem. MacBook Pro (new, 2014) upgraded to Yosemite. Had been running with ViewPoint high-resolution, 27" monitor, HDMI. I tried Thunderbolt connection -- it connected, but it would not allow the external monitor to run at its native resolution (2560x1440). It would only display properly using HDMI. Just 3 days ago after I installed the latest OSx software update, and my external monitor problems started. On startup, my MacBook screen flickers non-stop. I can fix problem eventually (after several tries) by disconnecting the HDMI cable, turning OFF the external monitor power, turning external monitor back ON and then plugging in the HDMI to my MacBook Pro. This is very inconvenient.
I will try using the Thunderbolt cable. When I tried it in the past, it connected, but it wouldn't display the native resolution of my external monitor (which is 2560x1440). Can only get this resolution now with HDMI.

External Display not working with MacBook Pro 13" (early 2011)

I just bought the current MacBook Pro 13" (i7 processor). My external display (Benq 20"W, 1600x1050) always says "No Signal Detected!". I've tried it with a DVI-Adapter (Griffin Video Display Converter) and with a VGA-Adapter (LMP Mini DisplayPort-VGA-Adapter). With lower resolution I once got a picture (but with weird lines). On my old MacBook (white, 2.16 Ghz) there was never a problem with this display (also OS X 10.6.6). Who can help?

Check this post if you want more info:
http://discussions.apple.com/thread.jspa?threadID=2774718
The gist is that DVI is currently very iffy through Thunderbolt. Mini display -> mini display OR mini display -> HDMI should work fine. It's most likely not your adapter itself but the fact that it's DVI.
If you can, get a mini display -> HDMI adapter and try that (assuming your external has HDMI).
I should hear back tomorrow or Monday from apple engineers with more specific info about this issue and I will update then.
BTW- DVI anywhere in the chain will make things fail. Mini Display -> DVI and a DVI/HDMI cable won't work with any reliability (I've tested it on three completely different monitors).

New Toshiba 3tb external drive not recognized at startup WIn 7

My new toshiba 3tb external drive (with wall wart power) is not recognized at start up (Win7). The message I get is that it is a USB storage device but can not be used until it is formatted (I already moved files to it). If I plug it in after start up it's fine and shows up as a toshiba storage device. I've used the 2.0 and 3.0 ports and it is the same problem (it has wall wart power). I have never encountered this problem with any other usb storage device (an iomega 1tb and a WD 500gb) always plugged in and recognized at start up.
Thoughts?

Please provide your complete model number of your system.
By doing so, we will be in a better position to provide you assistance.
Thank you,
-Kenna
"Knowledge should be unrestricted and the most important commodity we can offer to help one another."

WD external drive not recognized with 10.7.5 update

I've got a Western Digital external drive that was working just fine an hour ago, then I installed the 10.7.5 update and now my Mac Pro is saying that it's not recognized by the computer and asking if I want to initialize it. I went to Disk Utility and the drive itself shows up but no disc image. It's connected via a RocketU USB 3.0 dual hub, which has also worked fine and aparently still is (it's recognized in my system report). I updated my drivers for the USB 3.0 hub anyways but still no disc being recognized.
It's not a complete disaster because this is a backup disc, but I'd love to avoid having to back up all that data again (about a terabyte, which happens to be all my work files and iTunes files - it's a LOT of stuff). I also wanted to post in case this is some kind of issue with this current update, but I digress.
This is what my disc utility currently looks like:
The destination and source can't be the same (as is pictured) when doing a Restore, right? That accomplishes nothing but a blank drive, I'm guessing.
I also have Drive Genius 3 and tried to "scan" the drive several times, all of them producing failure to scan results. I could try a bench test on the drive, but as I've already stated, it was working fine an hour ago. I'm pretty sure it's the update, not the drive.
So is there any way for me to save the information that's currently on there or do I have to bite the bullet and re-backup all that data?
Thanks for any help here. Every time I think I know what I'm doing on the mac I get something stupid like this that I should know but don't. :-)

Wow, no help at all. Thanks, Apple!! Another stellar performance. That's the last time I ever install an update as it comes up.

Samsung SyncMaster 305T 30" external display not recognized

Similar Messages

Maybe you are looking for