Short interference (snow like) Mac Mini i7 (Late 2012)

Question

Level 1

0 points

Short interference (snow like) Mac Mini i7 (Late 2012)

My brand new Mac Mini has a strange error which i have never seen on any computer. At rare intervals my monitor shows a short (1 sec) interference. During this brief moment my apple cinema display shows 'multi colored snow'. It looks like the 'snow-interference' on old school tv's, but these speckles are in black, white AND red, green & blue.

I've got a cinema display connected through the provided Apple HDMI-DVI converter. The display itself never showed any interference on my old mac mini.

Does anyone experiences the same problem?

or.. does anyone has a clue what's happening here?

Cheers,

Bruno

Mac mini, OS X Mountain Lion (10.8.2), Mac Mini 2,3 Ghz I7 (Late 2012)

Posted on Oct 27, 2012 4:36 AM

Reply

Answer 1

Oct 27, 2012 10:47 AM in response to Brunoximus

same problem here, direct hdmi to an hdmi monitor. happened when i was trying to play a game. happened again this morning watching comedy central full screen.

im assuming its a video driver issue?

Reply

Answer 2

V M1

Level 1

5 points

Oct 28, 2012 10:28 AM in response to Brunoximus

I just had this happen again which lasted about 7 seconds and I got the following output from Console:

2012-10-28 1:24:56.528 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:24:56.529 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:24:56.529 PM WindowServer[89]: Received display connect changed for display 0x2b343212

2012-10-28 1:24:56.532 PM WindowServer[89]: No display devices are on-line. Switching to virtual display mode

2012-10-28 1:24:57.577 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:24:57.577 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:24:57.577 PM WindowServer[89]: Received display connect changed for display 0x3f003e

2012-10-28 1:24:57.586 PM WindowServer[89]: New display device coming on-line. Switching from virtual display mode

2012-10-28 1:24:57.605 PM WindowServer[89]: Created shield window 0x40 for display 0x2b343212

2012-10-28 1:24:57.605 PM WindowServer[89]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1

2012-10-28 1:24:57.960 PM WindowServer[89]: MPServiceForDisplayDevice: Invalid device alias (0)

2012-10-28 1:24:57.960 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:24:57.960 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:24:57.960 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:24:57.960 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:24:58.270 PM WindowServer[89]: Created shield window 0x41 for display 0x003f003c

2012-10-28 1:24:58.271 PM WindowServer[89]: Created shield window 0x42 for display 0x003f003d

2012-10-28 1:24:58.278 PM WindowServer[89]: Created shield window 0x43 for display 0x2b343212

2012-10-28 1:24:58.279 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2: Startup Mode 2048 x 1152, CGSThirtytwoBitColor, Resolution 1, IOMode 0x80001000, IODepth 0x0, IOReturn 0x0

2012-10-28 1:24:58.279 PM WindowServer[89]: Display added

2012-10-28 1:24:58.279 PM WindowServer[89]: Display removed

2012-10-28 1:24:58.281 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:24:58.281 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:24:58.281 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:24:58.281 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:24:58.300 PM WindowServer[89]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x2b343212 device: 0x100cee320 isBackBuffered: 1 numComp: 3 numDisp: 3

2012-10-28 1:24:59.606 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:24:59.647 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:24:59.674 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:00.279 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:25:00.319 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:00.347 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:01.295 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:25:01.295 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:25:01.295 PM WindowServer[89]: Received display connect changed for display 0x2b343212

2012-10-28 1:25:01.298 PM WindowServer[89]: No display devices are on-line. Switching to virtual display mode

2012-10-28 1:25:02.371 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:25:02.372 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:25:02.372 PM WindowServer[89]: Received display connect changed for display 0x3f003e

2012-10-28 1:25:02.381 PM WindowServer[89]: New display device coming on-line. Switching from virtual display mode

2012-10-28 1:25:02.386 PM WindowServer[89]: Created shield window 0x44 for display 0x2b343212

2012-10-28 1:25:02.386 PM WindowServer[89]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1

2012-10-28 1:25:02.946 PM WindowServer[89]: MPServiceForDisplayDevice: Invalid device alias (0)

2012-10-28 1:25:02.946 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:25:02.946 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:25:02.946 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:25:02.947 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:25:03.258 PM WindowServer[89]: Created shield window 0x45 for display 0x003f003c

2012-10-28 1:25:03.258 PM WindowServer[89]: Created shield window 0x46 for display 0x003f003d

2012-10-28 1:25:03.272 PM WindowServer[89]: Created shield window 0x47 for display 0x2b343212

2012-10-28 1:25:03.274 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2: Startup Mode 2048 x 1152, CGSThirtytwoBitColor, Resolution 1, IOMode 0x80001000, IODepth 0x0, IOReturn 0x0

2012-10-28 1:25:03.274 PM WindowServer[89]: Display added

2012-10-28 1:25:03.274 PM WindowServer[89]: Display removed

2012-10-28 1:25:03.276 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:25:03.276 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:25:03.276 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:25:03.276 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:25:03.293 PM WindowServer[89]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x2b343212 device: 0x100cee320 isBackBuffered: 1 numComp: 3 numDisp: 3

2012-10-28 1:25:04.394 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:25:04.434 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:04.462 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:05.274 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:25:05.314 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:05.342 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:07.598 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:25:07.598 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:25:07.598 PM WindowServer[89]: Received display connect changed for display 0x2b343212

2012-10-28 1:25:07.601 PM WindowServer[89]: No display devices are on-line. Switching to virtual display mode

2012-10-28 1:25:08.683 PM WindowServer[89]: Received display connect changed for display 0x3f003c

2012-10-28 1:25:08.683 PM WindowServer[89]: Received display connect changed for display 0x3f003d

2012-10-28 1:25:08.683 PM WindowServer[89]: Received display connect changed for display 0x3f003e

2012-10-28 1:25:08.707 PM WindowServer[89]: New display device coming on-line. Switching from virtual display mode

2012-10-28 1:25:08.711 PM WindowServer[89]: Created shield window 0x48 for display 0x2b343212

2012-10-28 1:25:08.711 PM WindowServer[89]: handle_will_sleep_auth_and_shield_windows: no action for lock state 1

2012-10-28 1:25:08.988 PM WindowServer[89]: MPServiceForDisplayDevice: Invalid device alias (0)

2012-10-28 1:25:08.988 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:25:08.988 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:25:08.988 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:25:08.988 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:25:09.299 PM WindowServer[89]: Created shield window 0x49 for display 0x003f003c

2012-10-28 1:25:09.299 PM WindowServer[89]: Created shield window 0x4a for display 0x003f003d

2012-10-28 1:25:09.313 PM WindowServer[89]: Created shield window 0x4b for display 0x2b343212

2012-10-28 1:25:09.321 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2: Startup Mode 2048 x 1152, CGSThirtytwoBitColor, Resolution 1, IOMode 0x80001000, IODepth 0x0, IOReturn 0x0

2012-10-28 1:25:09.321 PM WindowServer[89]: Display added

2012-10-28 1:25:09.321 PM WindowServer[89]: Display removed

2012-10-28 1:25:09.340 PM WindowServer[89]: Display 0x2b343212: GL mask 0x4; bounds (0, 0)[2048 x 1152], 18 modes available

Main, Active, on-line, enabled, boot, OpenGL-accel, Vendor 10ac, Model d01d, S/N 304e3553, Unit 2, Rotation 0

UUID 0x000010ac0000d01d304e355300000000, ColorProfile { 3, "HD 709-A Calibrated"}

2012-10-28 1:25:09.340 PM WindowServer[89]: GLCompositor: GL renderer id 0x01024400, GL mask 0x00000007, accelerator 0x00003043, unit 0, caps QEX|QGL|MIPMAP, vram 580 MB

texture units 8, texture max 16384, viewport max {16384, 16384}, extensions FPRG|NPOT|GLSL|FLOAT

2012-10-28 1:25:09.340 PM WindowServer[89]: Display 0x003f003c: GL mask 0x1; bounds (3072, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 0, Rotation 0

UUID 0xffffffffffffffffffffffff003f003c

2012-10-28 1:25:09.340 PM WindowServer[89]: Display 0x003f003d: GL mask 0x2; bounds (3073, 0)[1 x 1], 1 modes available

off-line, enabled, Vendor ffffffff, Model ffffffff, S/N ffffffff, Unit 1, Rotation 0

UUID 0xffffffffffffffffffffffff003f003d

2012-10-28 1:25:09.352 PM WindowServer[89]: MPAccessSurfaceForDisplayDevice: Set up page flip mode on display 0x2b343212 device: 0x100cee320 isBackBuffered: 1 numComp: 3 numDisp: 3

2012-10-28 1:25:10.713 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:25:10.753 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:10.780 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:11.321 PM WindowServer[89]: **DMPROXY** (2) Found `/System/Library/CoreServices/DMProxy'.

2012-10-28 1:25:11.361 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

2012-10-28 1:25:11.389 PM WindowServer[89]: Display 0x2b343212: MappedDisplay Unit 2; ColorProfile { 3, "HD 709-A Calibrated"}; TransferFormula (1.725494, 1.725494, 1.725494)

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Answer 3

Oct 29, 2012 5:31 PM in response to Brunoximus

I get the same exact problem on my new Mac Mini late 2012 i5. Mine is hooked up to a 60'' Sony Bravia TV through HDMI. Hopefully an update will be able to fix it.

Also, my external hard drive isn't being read every time I restart my Mac Mini, I have to unplug the USB 3.0 drive and then replug it back in...

Reply

Answer 4

R0mulox

Level 1

0 points

Oct 30, 2012 7:52 AM in response to Brunoximus

Thank goodness I'm not the only one! I'm just posting a "me too" to have this post gain some visibility. I have the same TV as Javier, except I go through a yamaha receiver. A little sad because this is my first mac mini ever, and I want to use it as a plex server!!! What a sinking feeling you get when this happens. It's not that bad though (yet).

Reply

Answer 5

V M1

Level 1

5 points

Oct 30, 2012 9:49 AM in response to R0mulox

I'm just hoping it's a software issue that can be easily fixed with an update and not a hardware defect. It clearly is not an isolated incident because quite a few of us are having this issue.

Reply

Answer 6

BDAqua

Level 10

245,393 points

Oct 31, 2012 2:02 PM in response to Brunoximus

How frequent is the occurrence of this?

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Answer 7

Brunoximus Author

Level 1

0 points

Oct 31, 2012 3:42 PM in response to BDAqua

The first occurence is within 15 minutes after startup. I guess two or three times per evening.

Reply

Answer 8

BDAqua

Level 10

245,393 points

Oct 31, 2012 4:10 PM in response to Brunoximus

Thanks, a real expert not associated with Apple may be looking into this, this weekend, if they get there hands on a Mini.

Reply

Answer 9

Oct 31, 2012 4:11 PM in response to BDAqua

apple is looking into it, and this thread.

a support engineer called me out of the blue today collecting information about this issue.

dont worry, cupertino is on the case on this one

#applesupportrocks

Reply

Answer 10

V M1

Level 1

5 points

Oct 31, 2012 4:22 PM in response to Brunoximus

On average, to me, it happens around 3 times in a span of about 3 hours. I have also noticed that the lengths of the video blackouts vary from about 1 second to about 7 seconds. Sometimes it is a 1 second video blip with no "snow-like interference" other times I get a blackout for about 3 seconds, then snow for 1 second and black for another 3 seconds. I am going to do my part in having this issue resolved for everybody. I also received a call from an Apple engineer.

Reply

Answer 11

Brunoximus Author

Level 1

0 points

Oct 31, 2012 4:33 PM in response to BDAqua

In reply to Cristian Williamson:

Yes, a member of the Apple supportteam contacted me aswell. Glad to hear they are looking into the issue at this moment.

Reply

Answer 12

koyeung

Level 1

0 points

Nov 2, 2012 4:25 PM in response to Brunoximus

I've the same issue with Mac Mini (late 2012). In addition, my display screen (via HDMI) is losing light colors, similar to the screenshot shows here.

How about your screens?

Reply

Answer 13

V M1

Level 1

5 points

Nov 2, 2012 4:36 PM in response to koyeung

That screenshot doesn't show the problem but I suspect it is due to the fact that what he is seeing is actually caused by improper monitor settings.

In your case, has it all of a sudden started losing light colors or has it been like that since you purchased it?

Reply

Answer 14

koyeung

Level 1

0 points

Nov 2, 2012 4:51 PM in response to V M1

It has been that since my purchased and start using of the Mini (late 2012).

The same monitor was used with macbook and there was no problem.

Reply

Answer 15

Nov 3, 2012 10:25 AM in response to Brunoximus

Mine just did it today! I received it yesterday and transfered all my files and apps across and there was no problems. Then today I get the interference which I could only get out of by reselecting the input to the monitor, my Eizo has 2 x DVI and a Display Port, cycling through these when I got back to the correct DVI input it was OK.

This only happened on the monitor connected to the HDMI output, I have a second monitor connected by the Mini DisplayPort to DVI and that remained OK.

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