Weird artifacts, screen distortions

I have a 24 inch iMac. Here is an example of something odd that is happening more often lately:
http://www.flickr.com/photos/39628298@N05/4502473085/
Sometimes it is random colors, too. Any ideas?
Hardware Overview:
Model Name: iMac
Model Identifier: iMac6,1
Processor Name: Intel Core 2 Duo
Processor Speed: 2.16 GHz
Number Of Processors: 1
Total Number Of Cores: 2
L2 Cache (per processor): 4 MB
Memory: 1 GB
Bus Speed: 667 MHz
Boot ROM Version: IM61.0093.B07
SMC Version: 1.10f2
Serial Number: W86370JLVGN
NVIDIA GeForce 7300 GT:
Chipset Model: NVIDIA GeForce 7300 GT
Type: Display
Bus: PCIe
PCIe Lane Width: x16
VRAM (Total): 128 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0395
Revision ID: 0x00a1
ROM Revision: 3021
Displays:
iMac:
Display Type: LCD
Resolution: 1920 x 1200
Depth: 32-bit Color
Built-In: Yes
Core Image: Hardware Accelerated
Main Display: Yes
Mirror: Off
Online: Yes
Quartz Extreme: Supported
Display Connector:
Status: No display connected

I posted another thread about this issue, as I have the same thing with my ATI X1600 in my C2D iMac.
If you are running bootcamp by any chance, look for a utility which will allow you to overclock your GPU (then use it to underclock the GPU instead). Using ATItools I reduced the core speeds of my GPU and video memory by quite a bit. 90% of my artifacting issues went away in WinXP.
I am still trying to come up with a way to underclock my GPU in Mac OS X, but I think it will require help from Apple to pull off.
If you can try this with your 7300 GT and it helps within windows, at least you know there is hope for you on the Mac side, assuming someone can come up with a way to flash the GPU.

Similar Messages

What am i missing? (weird artifacts in terminal)

I dont really know how to describe this too well, so i've upload screen shots for comparison. One of my systems seems to display weird artifacts in place of what would normally be straight lines. This causes problems with lots of things not aligning properly, and it also looks really ugly.
I use the same programs on both computers, and i dont recall doing or installing anything special on the system that works fine.With some programs I will only have issues if im using screen. For example, mcabber will display just fine if i'm running a single terminal window or ssh session, but if i try to run it in screen i will have issues with the lines not displaying correctly and get a pretty much unusable screen. Other apps will look ugly regardless of if they are in screen or not (but they will look worse in screen)
For an example i used midnight commander, which has this behavior outside of screen,
Here is it looking normal on my desktop:
And here it is looking messed up:
Any suggestions?

UTF8 support is right there. You get the weird characters, which means that mc is correctly outputting unicode, but the terminal doesn't display it as such. The problem here is that even your shell starts with the default locale, which is non-utf8. That's easy to check, just "echo $LANG" after starting a terminal locally (on the computer with the problem).
If you get en_US.utf8 then I'm completely lost, expert help is needed
Otherwise, the setting in rc.conf is overridden somewhere, most likely in your .bashrc or something similar. Grepping for LANG= in your home dir will hopefully tell you where exactly. If you use the same user locally and through ssh, then that explains why you get the problem from remote too. The config containing LANG=en_US is loaded just the same, no matter if you log in remotely or locally.

Weird "Artifacts" when benching overclocked CPU

Edit: problem solved, nevermind. (how do i delete threads completely?)

Quote
Originally posted by Streifenkarl
hmm, well i think i have fried my CPU in some way. it still works, and it does work 100% okay at stock settings. but i cant overclock it anymore without getting those weird artifacts.
if someone could tell me how i can take a screenshot in Aquamark3 i could show you a picture of it. but it must be the CPU that is "faulty", because in 3dmark03 i get these artifacts only in the two CPU tests.
unfortunately games have these artifacts now too. they look like long thin lines, more like lightning bolts all over the screen. i though it could be something wrong with my cooler, but the heatsink is still attached as its supposed to be and the fan is spinning.
but whats really weird about it is, that the CPU temperatures arent anything but normal! they never cross 60°C under full load, and thats well within in the Intel safety specs.
another thing is, that i ran Prime95 for 40 minutes and i didnt get a single error. the memory is working too, it passes all tests in memtest and WMD.
so do i have a broken CPU now that doesnt work in games and 3D apps only but handles all 2D stuff well? or is it completely fubard but Prime95 just cant detect it? i know, this must sound pretty "noobish", but i have never came across such a weird problem!
any ideas?
striefenkarl, do you remember joshpsu?
he had a nearly identical system to yours, only a 3C... and kingston pc4000 and spent months trying to figure it out... the only thing we could come up with is motherboard....
he took his 9800pro back and got another... same thing... he bought different ram because of it.... he bought a new power supply... when he built a 3C system based on asus P4P800 for a friend.. he tried his 3C, and it did the same exact thing... and he put his stuff in the asus board and it stopped...
so he couldn't play games when oced.... so really... whats the point of ocing convert movies faster and fold faster i guess?
he would get green lines by the way i think... are you getting green lines?

My Apple G5 using operating system 10.6.8 keeps locking up. I get no warning or error message. I do get some intermittent screen distortion. Any ideas as to what could be causing this and how i get rid of this problem? Complete system re - install? N

My mac keeps locking up it s Power mac G5 Intel using 10.6.8 OS.X. I get no warning or error messages it just locks up and the only way to get it to work again is to depress power button and restart. Its random intermittent and incredibly frustrating. I do get some screen distortion from time to time and wondered whether it may be a graphics card issue or whether it could be solved with a complete system re-install and OS upgrade?

According to everymac.com, your Mac came with Tiger, 10.4.x and can't go any higher than Lion, 10.7.x.
It would have come with gray, machine specific disks. Since there's no reason to install 10.4.x first, and then Snow Leopard over that, just purchase a retail copy of Snow Leopard for $20. What you won't get with the retail version of SL is the iLife suite (Garage Band, iDVD, etc.) that were on the original bundled disks, but you can purchase iLife on Amazon pretty cheap, and get newer versions besides.
When you get Snow Leopard, you can boot to the DVD, erase the drive and install everything clean. Hopefully, you issue is only software, and not hardware related.

Screen distortion and crashes

I get a lot of screen distortion, and my iMac completely freezes or crashes. I get a video ram failure message when I run Techtool.
I've tried reinstalling the system, but it's still happening.
I had the logic board replaced while it was under warrantee, but I'm afraid it may need replacing again (pretty expensive even to do it myself).
Any thoughts???

One good generic troubleshooting step for this is to run Applejack.
Download:
http://sourceforge.net/projects/applejack/
Article on using:
http://reviews.cnet.com/8301-13727_7-10334620-263.html?tag=mfiredir
It runs in single user mode. After installing (you won't see it in the Applications Folder) hold CMD-S at startup. You will get a black screen with MS-DOS like text. Just follow the prompts: type in "applejack AUTO" and it will run through the following:
Correct any Disk problems.
Repair Permissions.
Clear out Cache Files.
Repair/check several plist files.
Dump the VM files for a fresh start.
Trash old Log files.
You can also run tasks selectively and for specific users by typing in "applejack."
The first reboot will take much longer than usual, as it rebuilds caches. It may take several restarts to see the benefits. Because of the deep cache cleaning in AUTO mode some applications may tell you they are being opened for the first time.
I would also run the Hardware Test in extended. Disconnect all peripherals except the Keyboard and Mouse
http://support.apple.com/kb/ht1509
On your Mac, you can get to the Hardware Test simply by restarting holding down the D key.

Hi friends, I'm having troubles with my Ipad 2. I was working with it and suddenly the screen distorted. Now it is not possible to get it back to work properly. In fact, the screen is now black and nothing I have done makes the Ipad works again. Thanks

Hi friends, I'm having troubles with my Ipad 2. I was working with it and suddenly the screen distorted. Now it is not possible to get it back to work properly. In fact, the screen is now black and nothing I have done makes the Ipad works again. Please Help. Thanks in advance.

I think you should make an Genius Appointment.
Genius Appointment
http://www.apple.com/retail/geniusbar/

Kernel panic; screen distortions

Can someone help me to analyze what this System Diagnostic Report means? I have been experiencing random freezes and occasional screen distortion, usually horizontal lines, or zigzag graphics. Do I have a hardware problem here? My machine is a Late 2006 iMac running OSX 10.7.5.
Interval Since Last Panic Report: 2157356 sec
Panics Since Last Report:          1
Anonymous UUID:                    C607D585-09B7-4AA8-AA16-BBF56CD0202C
Thu Jun 27 12:39:44 2013
Machine-check capabilities (cpu 1) 0x0000000000000806:
family: 6 model: 15 stepping: 6 microcode: 199
Intel(R) Core(TM)2 CPU         T7200 @ 2.00GHz
6 error-reporting banks
threshold-based error status present
Machine-check status 0x0000000000000005:
restart IP valid
machine-check in progress
MCA error-reporting registers:
IA32_MC0_STATUS(0x401): 0xb200004000000800 valid
MCA error code:            0x0800
Model specific error code: 0x0000
Other information:         0x00000040
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   Error enabled
   Uncorrected error
IA32_MC1_STATUS(0x405): 0x0000000000000000 invalid
IA32_MC2_STATUS(0x409): 0x0000000000000000 invalid
IA32_MC3_STATUS(0x40d): 0x0020000000000000 invalid
IA32_MC4_STATUS(0x411): 0x0000000000000011 invalid
IA32_MC5_STATUS(0x415): 0xb200121020080400 valid
MCA error code:            0x0400
Model specific error code: 0x2008
Other information:         0x00001210
Threshold-based status:    Undefined
Status bits:
   Processor context corrupt
   Error enabled
   Uncorrected error
panic(cpu 1 caller 0x2cf3cc): "Machine Check at 0x01b17f68, trapno:0x12, err:0x0," "registers:\n" "CR0: 0x8001003b, CR2: 0x10e86000, CR3: 0x00100000, CR4: 0x00000660\n" "EAX: 0x00000010, EBX: 0x055fd000, ECX: 0x00000001, EDX: 0x00000000\n" "ESP: 0x00a53c70, EBP: 0x00a53ca8, ESI: 0x00000000, EDI: 0x00000210\n" "EFL: 0x00000046, EIP: 0x01b17f68\n"@/SourceCache/xnu/xnu-1699.32.7/osfmk/i386/trap_native.c:258
Backtrace (CPU 1), Frame : Return Address (4 potential args on stack)
0x38d66f38 : 0x2203de (0x6b08cc 0x38d66f58 0x229fb0 0x0)
0x38d66f68 : 0x2cf3cc (0x6bde94 0x6bdfc8 0x1b17f68 0x12)
0x38d670d8 : 0x2cf409 (0x38d67110 0xde 0x6bdfc8 0x1)
0x38d670f8 : 0x2e6182 (0x38d67110 0x0 0x0 0x0)
0xa53ca8 : 0x1b0f9df (0x32cde100 0x2 0x55fd000 0x0)
0xa53d48 : 0x1b11c73 (0xffffffff 0x7fffffff 0x0 0x0)
0xa53dd8 : 0x2d0cde (0xffffffff 0x7fffffff 0xa53df8 0x2cd4ca)
0xa53df8 : 0x22d3e5 (0x32ced000 0x10a72832 0x15c3 0x32cedde0)
0xa53e38 : 0x22e1c0 (0x7ca03f8 0x32ced000 0x0 0x0)
0xa53e88 : 0x22f6c2 (0x7ca0414 0x2 0xa53ec8 0x240c87)
0xa53ee8 : 0x22f821 (0x21dff0 0x0 0x0 0x5a)
0xa53f08 : 0x21dfdb (0x21dff0 0x2 0x1c92cd48 0x15c3)
0xa53f28 : 0x2b7e16 (0xa53f50 0x0 0xa53f9c 0x8)
0xa53fc8 : 0x2e5bb7 (0x7c38610 0x1 0x10 0x7ea8b10)
      Kernel Extensions in backtrace:
         com.apple.driver.AppleIntelCPUPowerManagement(195.0)[D1550426-D346-4805-A777-06 63C69080DA]@0x1b0d000->0x1b36fff
BSD process name corresponding to current thread: WDDriveManagerSe
Mac OS version:
11G63
Kernel version:
Darwin Kernel Version 11.4.2: Thu Aug 23 16:26:45 PDT 2012; root:xnu-1699.32.7~1/RELEASE_I386
Kernel UUID: 859B45FB-14BB-35ED-B823-08393C63E13B
System model name: iMac5,1 (Mac-F42786A9)

Hello Denise,
Trouble is it could be many things, on the face of it it looks like CPU, RAM, or...
Have you blown the dust out lately?
Get Temperature Monitor to see if it's heat related...
http://www.macupdate.com/info.php/id/12381/temperature-monitor
Have you done a PRAM reset, CMD+Option+p+r...
http://support.apple.com/kb/HT1379
In fact, do 3 in a row, takes a bit of time.
Intel-based Macs: Resetting the System Management Controller (SMC)...
http://support.apple.com/kb/HT3964
The WDDriveManagerSe is suspect also.
One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...
PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive
Reboot, test again.
If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts (Users & Groups in later OSX versions)>Login Items window to see if it or something relevant is listed.
Check the System Preferences>Other Row, for 3rd party Pref Panes.
Also look in these if they exist, some are invisible...
/private/var/run/StartupItems
/Library/StartupItems
/System/Library/StartupItems
/System/Library/LaunchDaemons
/Library/LaunchDaemons

Screen distortion after upgrading to mavericks os

I own a late 2011 MBP 13". Last week I upgraded to Mavericks and regret it ever since. Firstly, it's become unbelievably slow. Secondly, and most importantly my screen resolution is now distorted and completely messed up. Immediately I suspected if Mavericks had screwed some setting. So I looked up Google for screen distortion after upgrading to Mavericks. The results were surprising! There are many apple discussions going on about the same thing. After reading most of them, as suggested in almost all threads, I took my laptop to the service station. The initial response given to me was that they suspected a hardware issue. All threads had indicated what to expect so I was not surprised. I explained to them clearly that there are discussions revolving around this topic and many users have been affected because of this. I even showed / shared the links of the various discussions on this topic. The service station in India asked for more time to investigate further. In the mean time I contacted the Indian call centre to report this problem. The service station reverted after their investigation that my logic board was corrupted and needed replacement. Phew!!! The cost of replacement is as good as buying a new MBP. It's really amusing because my MBP is less that 2 years old and unfortunately I do not have extended warranty.
Has anyone facing the same issue been able to convince apple that this is a mavericks issue? Does even apple recognize this as an issue in the first place? Does apple expect people to blindly invest in hardware just because they have released a new OS?
These and many more questions....
Expecting answers!!!
Not a good start to 2014

The startup disk may need repairing ...
Restart your Mac while holding down the Command + R keys.
From there you should be able to access the built in utilities in OS X Recovery

Weird Splash Screen with 32.1

We have this Download Error problem with our Magazine App. So I made an update with the new App Builder to v32.1. Now I get weird Splash Screens in the Developer App.
If I'm starting the App horizontally I get the vertically Splash Screen for a short time at the end of the startup process. If I'm starting the App vertically I get a rotated vertical Splash Screen for a short time at the end of the startup process. Please see screenshots attached.
Thanks
Haeme

That's great news Neil, thanks for sharing.
On Wed, Oct 15, 2014 at 7:50 AM, Neil Enns - Adobe <[email protected]

OS X crashing & screen distortion

Hi all,
I am running 10.6.4 and for some time now, after the update to .3 and .4 my iMac has been crashing. What happens is it freezes with the spinning beach ball and becomes unresponsive. The mouse still moves and if video / audio is running in the background I can still hear it playing. I have no option but to hold the power button in and switch off / on.
Does this sound familiar to anyone? Are there any fixes?
The last time it happened I was running iTunes, Mail and Safari (which was streaming Sky Sports from the Sky website).
Also, I occasionally get image / screen distortion where part of the screen stretches and then returns. Has anyone had that also?
Many thanks,
Ian

Alt + tab isn't the default app switcher hot key sequence; command + tab is. But since I asked specifically about the command + option + escape hot key sequence, I wonder if you are using an Apple keyboard or perhaps a non-Apple one with differently marked keys. If so, try both the mapped & unmapped versions of the keys -- IOW, try all the modifier key combinations.
Also try temporarily disconnecting all non-essential peripherals like external drives or printers. Try starting up in Safe Mode & try logging into a newly created temporary user account. If the beach balls don't happen with any of these things, let us know.

Re: Weird grey screen after 10.5.2 update?

Left my computer on this morning (did not put it into sleep mode) and came back tonight to see this weird grey screen. Could not get it to "wake up." Eventually shut it down manually and re-started. Seemed to boot up normally, but I'm wondering if anyone else has seen this on their computers after the update?
BTW, I understand that repairing permissions is done best off the install DVD, but I recall there were some issues with permissions on the install DVD? Is that true?

Can't help with the gray screen problem, but WRT permissions repair, you understand wrongly. Leopard and Tiger use the permissions information from the volume it's repairing, so it doesn't matter where you doing it from.

What causes screen distortion on MacBook Pro late 2011 (iOS 10.9.5)

My MacBook gets screen distortion and freezes completely. Any idea what's going on?
The distortion looks like horizontal lines with image duplicates and split-screens with black gaps.
Visual:
Spec:
MacBook Pro 15" late 2011
iOS 10.9.5
Processor 2.5 GHz Intel Core i7
8 GB 1067 MHz DDR3
I tried several restart options and ran hardware diagnostics which didn't uncover anything at all. This MacBook also has plenty of memory and free space and used to run perfect until 5 days ago.

It could be the GPU... What model do you have?
Sadly it seems that a lot of 2011 Macbook Pro models with discrete graphics have this issue:
2011 MacBook Pro and Discrete Graphics Card
Try to go to an Apple Store or an Authorized Service Provider and have a check.
The cases of gpu failure are dramatically increasing over the last months, but sounds like Apple isn't taking care of the problem...

Illustrator CC 2014 welcome screen distorted

Has anyone seen Illustrator's welcome screen distorted like this? I have restated the program and restarted the computer and every time it opens it does this. Everything else in Illustrator seems to be working just fine though.

Did you look at the More Like This column on the right
Has anyone else encountered a distorted/skewed Ai CC 2014 Welcome screen?

Ipod screen distorts at bottom of screen, possible solution?

my new 30gb ipod screen distorts for no reason at the bottom, what can be done to solve this problem?
compaq Windows XP

If it was new, I would return it to the place of purchase for a refund.
Good Luck!
Rob

Screen distortion, primarily with Safari and iMail

I am having screen distortion, but it seems to be limited to Apple applications. The screen for Safari and iMail are distorted to the point of being unusable. I can still using apps such as Firefox which I am using now. I tried to take a screen shot, but the muttled screen comes through as blank when I take a screen shot.

When you zoom out Photoshop quickly renders scales down version your image. Photoshop does not use an advances interpolation method to try to show you the best image it can for that would really slow down Photoshop's operation. You should not expect things like fine text to scale well it not being scaled using vector graphics or advances interpolation. You not seeing the actual image you seeing a quickly scaled rendering to let you see an image that does not fit on your display for your display has a fixed resolution and just so many pixels it can display.

Weird artifacts, screen distortions

Similar Messages

Maybe you are looking for