Flickering screen on external monitor

Hi, when I connect my 2011 Macbook Air to a external monitor, the screen of the external monitor is flickering. Tried different cables and monitors, same problem every time. So my guess is, that it's a problem with the hardware of my MB? Is it easy to fix, will Apple fix it when I'll bring it to the Apple Store? Actually, I can't live without my Macbook for a while, because of my work. The problem was always there, but it's getting worse and annoying, because I bought a new very expensive external monitor.

Same with my macbook pro 13" 7,1 (mid 2010) but also with resolution same or under 1080p

Similar Messages

  • Flickering on DVI external monitor connected to 2009 Macbook

    This is an ongoing an intermittent problem. At one point Apple phone support suggested that engineers are working on the problem but I haven't heard any updates.
    The problem is with a 2009 macbook (13 inch) connected to an apple display (from 2008) by an apple minidisplayport to dvi connector. I don't find this kind of problem when another computer is connected to the display. The problem is unaffected by changing the brightness settings on the display.
    The problem is intermittent, it occurs roughly once every five days. It typically occurs after the computer wakes from sleep. It doesn't usually occur when the macbook is first connected to the display (this suggests that it is not a problem with the minidisplayport to dvi cable) and jiggling the cable doesn't cause the problem or make it go away. The problem doesn't occur in particular when the computer is hot, it could be cool, after it is woken from sleep. There are no problems on the macbook's built in display.
    The flickering is quite dramatic. Dark flashes extend from the bottom of the display sometimes 50% of the way up the screen and sometime 75% of the way up. The frequency is irregular but during an episode the flickers occur about once every one or two seconds, but sometimes there is a gap of 5 seconds. The episode will come to an end if I put the machine to sleep and wake it again (this also suggests that this is not a problem with the cable connection or the monitor).
    It is difficult to get support on this issue. Since the problem is intermittent and may not occur for 5 days it doesn't make sense to try to reproduce it in an apple store. I called apple phone support and the technician recommended adjusting the brightness of the display, resetting the pram, moving some files that record configuration data for the external monitor. These didn't help. The technician acknowledged that apple is working on this problem and recommended that I call back if the problem recurred. I called back a couple weeks later and a technician recommended that I buy another minidisplayport dvi connector - to be frank this is an inconsiderate suggestion for a problem with end to end apple hardware - and I don't expect it to solve the problem.
    How should I troubleshoot this problem, or get effective help from Apple? Is this a problem with the graphics card?
    John

    Hello, i have the same kind of issue.
    75% of the time, my external screen works fine, otherwise, i need 5-10 plug/unplug/reboot to make it work...
    There my windowserver.log from this morning :
    Jul 28 09:40:00 [52] Server is starting up
    Jul 28 09:40:01 [52] CGXMappedDisplayStart: Unit 0: boot screen
    Jul 28 09:40:01 [52] CGXMappedDisplayStart: Unit 0: no display alias property
    Jul 28 09:40:02 [52] CGXMappedDisplayStart: Unit 1: no display alias property
    Jul 28 09:40:10 [52] AGCAttach: Couldn't find any matches
    Jul 28 09:40:10 [52] CGXPerformInitialDisplayConfiguration
    Jul 28 09:40:10 [52] Display 0x4272800: MappedDisplay Unit 0; Vendor 0x610 Model 0x9ca0 S/N 0; online enabled built-in (0,0)[1280 x 800], base addr 0x1800000
    Jul 28 09:40:10 [52] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x1800000
    Jul 28 09:40:11 [52] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:40:11 [52] kCGErrorIllegalArgument: Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
    Jul 28 09:40:11 [52] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:40:10 [52] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, accelerator 0x0000282f, unit 0, caps 0x00000003, vram 256 MB
    Jul 28 09:40:10 [52] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, texture units 4, texture max 8192, viewport max {8192, 8192} extensions 0x0000000f
    Jul 28 09:41:57 [52] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:41:57 [52] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:42:34 [53] Server is starting up
    Jul 28 09:42:35 [53] CGXMappedDisplayStart: Unit 0: boot screen
    Jul 28 09:42:36 [53] CGXMappedDisplayStart: Unit 0: no display alias property
    Jul 28 09:42:36 [53] CGXMappedDisplayStart: Unit 1: no display alias property
    Jul 28 09:42:36 [53] AGCAttach: Couldn't find any matches
    Jul 28 09:42:36 [53] CGXPerformInitialDisplayConfiguration
    Jul 28 09:42:36 [53] Display 0x4272800: MappedDisplay Unit 0; Vendor 0x610 Model 0x9ca0 S/N 0; online enabled built-in (0,0)[1280 x 800], base addr 0x1800000
    Jul 28 09:42:36 [53] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x1800000
    Jul 28 09:42:37 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:42:37 [53] kCGErrorIllegalArgument: Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
    Jul 28 09:42:37 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:42:38 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, accelerator 0x0000282f, unit 0, caps 0x00000003, vram 256 MB
    Jul 28 09:42:38 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, texture units 4, texture max 8192, viewport max {8192, 8192} extensions 0x0000000f
    Jul 28 09:43:24 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:43:24 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:44:16 [53] Server is starting up
    Jul 28 09:44:16 [53] CGXMappedDisplayStart: Unit 0: boot screen
    Jul 28 09:44:16 [53] CGXMappedDisplayStart: Unit 0: no display alias property
    Jul 28 09:44:17 [53] CGXMappedDisplayStart: Unit 1: no display alias property
    Jul 28 09:44:17 [53] AGCAttach: Couldn't find any matches
    Jul 28 09:44:17 [53] CGXPerformInitialDisplayConfiguration
    Jul 28 09:44:17 [53] Display 0x4272800: MappedDisplay Unit 0; Vendor 0x610 Model 0x9ca0 S/N 0; online enabled built-in (0,0)[1280 x 800], base addr 0x1800000
    Jul 28 09:44:17 [53] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x1800000
    Jul 28 09:44:18 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:44:18 [53] kCGErrorIllegalArgument: Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
    Jul 28 09:44:18 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:44:19 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, accelerator 0x0000282f, unit 0, caps 0x00000003, vram 256 MB
    Jul 28 09:44:19 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, texture units 4, texture max 8192, viewport max {8192, 8192} extensions 0x0000000f
    Jul 28 09:45:32 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:45:32 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:46:16 [53] Server is starting up
    Jul 28 09:46:18 [53] CGXMappedDisplayStart: Unit 0: boot screen
    Jul 28 09:46:18 [53] CGXMappedDisplayStart: Unit 0: no display alias property
    Jul 28 09:46:18 [53] CGXMappedDisplayStart: Unit 1: no display alias property
    Jul 28 09:46:18 [53] AGCAttach: Couldn't find any matches
    Jul 28 09:46:18 [53] CGXPerformInitialDisplayConfiguration
    Jul 28 09:46:18 [53] Display 0x4272800: MappedDisplay Unit 0; Vendor 0x610 Model 0x9ca0 S/N 0; online enabled built-in (0,0)[1280 x 800], base addr 0x1800000
    Jul 28 09:46:18 [53] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x1800000
    Jul 28 09:46:20 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:46:20 [53] kCGErrorIllegalArgument: Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
    Jul 28 09:46:20 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:46:20 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, accelerator 0x0000282f, unit 0, caps 0x00000003, vram 256 MB
    Jul 28 09:46:20 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, texture units 4, texture max 8192, viewport max {8192, 8192} extensions 0x0000000f
    Jul 28 09:46:58 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:46:58 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:48:03 [53] Server is starting up
    Jul 28 09:48:04 [53] CGXMappedDisplayStart: Unit 0: boot screen
    Jul 28 09:48:04 [53] CGXMappedDisplayStart: Unit 0: no display alias property
    Jul 28 09:48:04 [53] CGXMappedDisplayStart: Unit 1: no display alias property
    Jul 28 09:48:04 [53] AGCAttach: Couldn't find any matches
    Jul 28 09:48:04 [53] CGXPerformInitialDisplayConfiguration
    Jul 28 09:48:04 [53] Display 0x4272800: MappedDisplay Unit 0; Vendor 0x610 Model 0x9ca0 S/N 0; online enabled built-in (0,0)[1280 x 800], base addr 0x1800000
    Jul 28 09:48:04 [53] Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (2304,0)[1 x 1], base addr 0x1800000
    Jul 28 09:48:05 [53] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:48:05 [53] kCGErrorIllegalArgument: Set a breakpoint at CGErrorBreakpoint() to catch errors as they are returned
    Jul 28 09:48:05 [53] kCGErrorIllegalArgument: CGXOrderWindow: Operation on a window 0x2 not owned by caller SecurityAgent
    Jul 28 09:48:06 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, accelerator 0x0000282f, unit 0, caps 0x00000003, vram 256 MB
    Jul 28 09:48:06 [53] GLCompositor: GL renderer id 0x0002260e, GL mask 0x00000003, texture units 4, texture max 8192, viewport max {8192, 8192} extensions 0x0000000f
    I had a macbook 3.1 white with external VGA and i never had any issue during 15 months of use (with external screen 5 days per week).

  • Playing DVD in Full Screen on external monitor?

    Hi,
    Recently,i have been trying to play DVDs using Apple DVD Player in Full Screen on an external 20 " monitor.
    However,when i click something on my primary display on my MBP,apple DVD player(on the external monitor) will exit Full screen and goes into Maximum size.
    So,my question is What can i do to make sure Apple DVD Player will retain its Full Screen mode(on my external display) while i continue with my work on my MBP's display?
    Any help would be much appreciated...
    Macbook Pro 15.4'   Mac OS X (10.4.8)   Core 2 Duo 2.16 GHz
    Macbook Pro 15.4'   Mac OS X (10.4.8)   Core 2 Duo 2.16 GHz

    This is a problem for most software on the mac, especially games. My experience has been most software uses the primary - in this case the macbook lcd - as its display monitor. There are a few ways to fudge it to force it on another screen, but quite frankly I find that the only way to use a macbook pro and external monitor is with the lid closed.
    This is generally the best solution as the menu bar is always stuck on the primary anyway.
    To use the macbook closed simply wake the computer from sleep with an external keyboard or mouse the laptop and the primary will now be the external monitor.
    The only real downside is how do I now use the isight????

  • Possible to view quicktime in full screen on external monitor?

    Hey All!
    Im wondering if there is any way to view quicktime movies in full screen (or use front row for that matter) on an external desktop set up us as an extended desktop (as opposed to mirror). This seems like quite a dumb thing to not be able to do.

    This is a problem for most software on the mac, especially games. My experience has been most software uses the primary - in this case the macbook lcd - as its display monitor. There are a few ways to fudge it to force it on another screen, but quite frankly I find that the only way to use a macbook pro and external monitor is with the lid closed.
    This is generally the best solution as the menu bar is always stuck on the primary anyway.
    To use the macbook closed simply wake the computer from sleep with an external keyboard or mouse the laptop and the primary will now be the external monitor.
    The only real downside is how do I now use the isight????

  • Qosmio G30 - black screen on external monitor

    Qosmio G30 (PQG32E) running Vista Home Premium, NVIDIA GeForce Go 7600 driver, 7.15.10.9813
    I cannot get a picture on an external monitor (tried two different monitors). Specifically:
    'Windows Mobility Center' will recognise that a monitor is connected
    'NVIDIA Control Panel - Change Display Configuration' will recognise the external monitor ('Select the displays you would like to use' shows 'Laptop Display + Sony SDM-HS73', which is the plugged-in ext monitor)
    but no matter what configuration I try, using Fn+F5 or Change Display Configuration, I cannot get anything but a (backlit) black screen on the external monitor.
    The monitor is receiving a video signal correctly: when turned off under a laptop-only Fn+F5 setting, it shows a 'no signal' warning, but when turned on again I just get black.
    I have tried changing resolution settings for the external monitor. They exactly match the monitor's native resolution. Still nothing.
    Tried 'Clone' mode and 'Dual View' mode.
    Tried various different orders of switching the laptop and monitor on, plugging and unplugging, etc.
    Have installed latest driver from this Toshiba site (as above). Have NOT tried installing any other driver from the NVIDIA site, since it warns to use Toshiba's - but is that worth a try?
    The laptop's own screen and all other aspects of video are fine.
    It has worked ok in the past (I think before I did the upgrade to Vista, when it was still on XP).
    Do I just wait for another driver update from Toshiba, and perhaps Vista SP1?
    I'm really hoping this is not a hardware issue, since the monitor is recognised etc....
    Jonathan

    What port did you use?
    The external monitor (analog) port or the D-video out port?
    As far as I know if you have used the external monitor (analog) port then you should choose the Analog display in the nVidia -> current display
    Then you could use the button FN+F5 to switch between the both displays.

  • Macbook Pro - Black screen and external monitor

    Hi there,
    I'm new here and it would be great if anybody could give me some advice about my Macbook Pro issue. First of all, I would like to thank all the contributors for your comments. I'll go to an Apple Store asap, but I'll really appreciate any of your comments so I'll know more about this issue and how to manage it.
    My device details are:
    Macbook Pro / 2.8 GHz Intel Core i7 / 4GB 1067 MHz DDR3 / Macintosh HD / Mac OS X 10.6.8
    NVIDIA GeForce GT 330M
    Other connected equipment:
    HP Monitor Pavilion 22xi (with an official Apple adapter - projector's plug)
    Wacom tablet Bamboo Fun (USB connection)
    I usually work with graphics software (Illustrator, Photoshop, etc.), since I bought my laptop (3-4 years ago) it has worked faultlessly. But I started to notice some problems about two weeks ago. The problem is basically always the same: After some hours of work, suddenly and randomly (it tends to happen when I click on a button) the screen turns off but the computer is still running (I can hear the fan and hard disk). As I said I use an external monitor, and it also turns off at the same time. That's why I thought it may not be a problem with the screen, it's probably related to the graphics card ?¿?
    The troubleshooting steps that I've tried are:
    After waiting several minutes and without any response, I have to restart my laptop. When it turns on a Panic Report message pops up. It says that a severe problem made me turn the laptop off suddenly (or something like that). The Panic Report says something about "kernel_task", I have no idea what it is, just in case it could help to clarify more (I've printed all these panic reports).
    I also have to mention that this laptop gets really hot on the left side, which I reckon it's a very common thing in these devices. I have to use a desktop electric fan to provide relief to both of us
    I've also disable the "Automatic graphics switching" tab in Energy Saver menu.
    Despite all of this, the screen and the external monitor are still turning off.
    Any idea?
    Thanks a lot,
    Clara

    I would suggest that you run AHT using Using Apple Hardware Test. You can either reboot the machine and press the D key, or use your second Grey disk. This would potentially show you any HW problems.
    Typically these older machines exhibit GPU issues. There is a third-party application called gfxCardStatus, that can provide some insight as well.
    This may or may not help if there are GPU issues - About NVRAM and PRAM (reset NVRAM/PRAM/SMC).
    It is possible to enable remote access (via SSH) and even if the screen is not working, the machine can be accessed remotely. Please see System Preferences -> Sharing.
    Can you run a test with both the lid of the MBP and the external monitor plugged in. Does your external monitor disconnect, but the internal one still show a screen?

  • Help please? problems with screen resolution & external monitor

    had a look around this forum and seen many questions about screen resolution when connecting to an external monitor but unfortunately, non that help me answer my problem.
    got a brand new macbook a few months ago and today bought a HP v220 22" external monitor.
    I am new to the idea of external monitors and am unsure what i am doing wrong settings-wise. it seems that no matter what resolution i set either my macbook display, or the external monitor display to. the external monitor is still not sharp.
    Im not sure how to explain what i need but basically i need it to be so that things appear on the external the same size as they do on my macbook screen, so that i will have more space to work in on my external monitor (i am a graphics student) but at the moment what appears on the monitor is lieterally just a magnified version of my macbook screen, hence it lacks clarity.
    the highest resolution offered in the menu for my macbook screen is 1280x800 and my external is recommended to be set at 1680x1050.
    what settings should i have to get the resolution right?
    i will be so so grateful if you can help. i think ive tried every single display setting but to no avail. so please help me!

    The 13.3" screen on the MacBook running at 1280 x 800 will have a ppi (pixels per inch) of around 113. A 22" monitor running 1680 x 1050 will have a ppi of around 90. So it is natural that it will look magnified compared with the MacBook. The two displays have different a pixel pitch.
    Since there are no monitors with ~113 ppi out there in the market, what you want to do with having the same size and sharpness between the MB and a monitor will not be possible.
    If you ran the MB's screen at 1024 x 640 (not even sure if that is an available choice), then the two screens would match in terms of "magnification." But the MB isn't going to look very sharp running such a low, non-native format.

  • Connecting problems imac flat screen to external monitor

    My imac flat panel screen is dark, tried hooking up exterior monitor with proper adapter and exterior monitor says in power save mode press any key or move mouse but still no picture?

    Sounds ominous. When an external display fails to show up anything, that usually indicates that the video hardware on the logic board has failed. Were ony the display or its cabling at fault but the logic board hardware was working, the external should still show something.

  • Macbook Pro 15 Inch, broken screen to external monitor

    I have a 15 inch macbook pro that was stepped on and the screen was broken. I took it to genius and they said it was toast. Great help guys. I took it home and plugged it in from the mini display to HDMI and my desktop appeared on the television screen. Simple as that.  Keep in mind this is a 42 inch panasonic TV. But when I plugged it into my vizio television that is in my personal room the desktop was to the left, (regularly you have to drag whatever you want to the right. It's a double screen) and what was appearing on the TV was just a blank desktop which is no help at all.
    I need to see my desktop on my vizio television.
    So i was reading about the mirror image option under >display >system preferences and I turned that on when I was doing work on the panasonic and now I can't access anything, from either television. 
    So I need to either
    A. find a way to reset system preferences on my Macbook Pro 15 inch with no access to the desktop so I can get it working on at least the Panasonic television again.
    Or
    B. Find a way to get in up on the Vizio. (prefered.)
    Any suggestions.
    Thanks so much.

    Its a keyboard shortcut to mirror or un mirror screen. Then you can use your mouse and what not. My macbook air fell about 1.5 feet to carpet and thanks to the thin design of the metal parts turned the dam n screen into a knife and sliced the wires for the screen, wifi, Bluetooth, and camera... Well one wire was still attached, the one that powered the screen. So all i had was a white screen. I know its accidental damage and all but to have it fall and break a week after my warranty ran out ***?!?! Apple must employ ninjas!

  • External monitor quivers on L440, not on Acer

    Hi there,
    My external monitor quivers when connected to my new Lenovo ThinkPad L440. I does not do it when connected to my 4 year old Acer laptop, is seems perfectly fine there. In both cases connected with the same VGA cable.
    It's a constant, tiny flickering, as if every pixel jumps left and right all the time. The external monitor is pretty old, approx 8 years...
    Any idea what it could be?
    Solved!
    Go to Solution.

    Are you using a ThinkPad Basic Dock in this configuration? There is a new update available that resolves flickering or black screen on external monitors for the Dock.
    See this solution: http://forums.lenovo.com/t5/R-L-Series-ThinkPad-Laptops/L440-L540-External-Monitor-Connected-Via-VGA...
    Amy Tupper
    Technical Resolution Lead, Pervasive Issues
    Lenovo US
    ThinkPad T431s, S3 Yoga 14, Helix, Edge 11 & 14, E431, IdeaTab A1107, IdeaPad A1-07, IdeaCentre Horizon, Yoga Tablet 2 10 1051
    First computer was a 1980 Commodore 64 from Radio Shack/ GEnie SFRT member from 1993-1996

  • Possible to connect an external monitor to HP Pavilion dv4t-4200 CTO Entertainment Notebook PC

    I have a HP Pavilion dv4t-4200 CTO Entertainment Notebook PC model # A1M02AV and it has a VGA port, one that looks like a phone/broadband cable port, and one that looks like a USB port but indented on either side at the bottom. Can I even connect an external monitor? How do I find out if I have more than 1 video card? Besides the usual USB/headphone ports, I don't have any other ports. It says my drivers are up to date...but I don't even know what I should be looking for. Do I need to install something or buy some sort of adapter? 
    I am trying to connect a Dell external montitor via the VGA port with a VGA cable. The monitor has power but my notebook does not recognize/detect it. However, when I first plugged it in, my notebook display shrank into a square (vs the whole screen) so it recognized something...but nothing happened on the external monitor. 
    I tried detecting it via my display settings, but  I accidentally changed some dispaly setting so that the home desktop only shows on monitor 1, but unselected my actual notebook display or something or changed it to be monitor 2 (even though monitor 1 does not exist), so when I plug the cable in to my notebook, all of a sudden my desktop goes away and it's a just a blank background screen - and I cannot access the computer display settings or anything.... when the cable is unplugged this setting looks normal, so I can't figure out how to fix it. 
    Sorry, I have no idea what I'm doing here - please help! 
    This question was solved.
    View Solution.

    Hi,
    All Dell monitors come with CD's for drivers. Your laptop may not know the monitor w/o its driver, it won't install automatically. Please check:
    Ringht click a blank space on desktop,
    Click Personalize
    Click Display
    Click Change display settings
    Can you see BOTH laptop screen and external monitor in there as shown on the following image:
    For testing, I put my Dell monitor is my main display. If I can't see 2 monitor, you need its driver first and then check the cable.
    Regards.
    BH
    **Click the KUDOS thumb up on the left to say 'Thanks'**
    Make it easier for other people to find solutions by marking a Reply 'Accept as Solution' if it solves your problem.

  • Setting the resolution for external monitor

    Hello all,
    I just purchased a ViewSonic vx2025wm 20.1" external monitor for my PowerBook G4 1.5Ghz 12". I've scoured the discussions regarding my question, but couldn't seem to find it. So I'll post it here...
    I've successly connected the ViewSonic to my PB and the image seems to display fine in "spanning" mode (ie images span over two screens). However, when I try to "mirror" (ie have the same view show on both screens) the external monitor displays a 1024x768 resolution (the PB displays this as well, but that is the optimal resolution for the 12"). My question is this: how can I mirror while having each screen display its optimal resolution (the optimal resolutions would be 1680x1050 for the External monitor, and 1024x768 for the PB).
    Thanks in advance for any wisdom on this!
    PowerBook G4 1.5 Ghz 12 inch   Mac OS X (10.4.6)   1.25 Gig RAM

    Thanks for the quick response -- and one follow-up question. Will turning mirror off (which, if I understand correctly, will place the displays in spanning mode) cause a strain on my PB? Since the PB will be supporting the displays of both the external monitor plus its own display. Does that make sense? I actually read something related to this in these discussions which is why I brought it up. I will try to locate that discussion and place a link in this thread so I can better explain.

  • External monitor not displaying full 1920x1080 (black bars around desktop), Pavilion g6

    I have a Pavilion g6 notebook running Windows 8.1. I have an external Acer S232HL display hooked up via an HDMI cable. The resolution is set to 1920x1080 in Windows, and I'm only outputting to the external monitor.
    Windows thinks the resolution is set to 1920x1080, but for some reason on the monitor it is scaled to something like 1734x980 with black borders (unused pixels) all around.
    All drivers and OS are up to date. Graphics: AMD Radeon HD 7640G via an AMD A8-4500M APU.
    Somebody posted what looks to be the same problem for this AMD chipset, though for a different manufacturer:
    https://forums.lenovo.com/t5/Lenovo-3000-and-Essential/G505S-doesn-t-full-screen-my-External-Monitor...

    (Workaround)
    Since I don't expect to find a fix for this, I've resigned myself to setting the resultion to 1776x1000 and setting the monitor in a 1-for-1 pixel mode (called "Aspect" in the options). I still end up with the borders, but the graphics are nice and sharp because it isn't trying to scale 1920x1080 into a smaller resolution.

  • T540P External Monitors

    Hi,
    This question is about the Lenovo T540P laptop (with HD Graphics 4600 ).
    1. I would like to know if its possible to connect two external monitors to the laptop (using mini Display Port and vga ports together) - resulting in 3 active screens (laptop screen + 2 external monitors) while using Extend Mode ?
    2. What is the max resolution's for the mini DP and VGA ports for external monitors?
    I've search your forums and looked up using Google but i couldn't find any answers
    Thanks!

    Hi,
    Here's what the tabook has to say:
    Intel HD Graphics 4600 in processor only, or Intel HD Graphics 4600 in processor and NVIDIA GeForce GT 730M, PCI Express x8, 1GB memory, NVIDIA Optimus technology; supports external analog monitor via VGA and digital monitor via Mini DisplayPort; supports three independent displays; Max resolution: 1920x1200@60Hz (VGA); 3840x2160@60Hz (DP via mDP cable)
    I don't have a similar machine so I can't verify beyond what I read here.
    Z.
    The large print: please read the Community Participation Rules before posting. Include as much information as possible: model, machine type, operating system, and a descriptive subject line. Do not include personal information: serial number, telephone number, email address, etc.  The fine print: I do not work for, nor do I speak for Lenovo. Unsolicited private messages will be ignored. ... GeezBlog
    English Community   Deutsche Community   Comunidad en Español   Русскоязычное Сообщество

  • Lenovo E540 - Dual External Monitors

    Hi,
    This question is about the Lenovo E540 laptop (with HD Graphics 4600 or 4400).
    1.I would like to know if its possible to connect two external monitors to the laptop (using hdmi and vga ports together) - resulting in 3 active screens (laptop screen + 2 external monitors) while using Extend Mode ?
    2.What is the max resolution's for the HDMI and VGA ports for external monitors?
    I've search your forums and looked up using Google but i couldn't find any answers
    Thanks!

    Anyone ?

Maybe you are looking for