This keeps happening to my Mac Pro 5,1. Pixelated screen. Forced to shut down.

[eyeangle]

Can you guys help me get to the bottom of this?

Here are some photos of what is happening. It's been happening since I upgraded to Mojave, and I think before but I can't remember.

I've also added some screenshots of my specs.

Graphics card is a Gigabyte.

I have a 1TB SSD sitting on an Apricorn Velocity Solo x2.

It happens randomly about once or twice a day. The screen goes all pixelated and I'm forced to hold the power switch until it shuts down.

 

[crjackson2134]

Check your monitor cable connection. You may have a loose connection or a bad cable, jiggle the cable and see if it affects video output. Also, power cycle your monitor when this happens.

Your, firmware is behind too. 10.14.1 comes with firmware 140.0.0.0.0. I recommend you download the full Mojave Installer package and initialize the install so that it will update the firmware. You don’t have to go through the full install process (although it wouldn’t hurt).

Start with the simple things first.

 

[eyeangle]

I tried jiggling the cable, unplugging it and reconnecting it, turning the monitor on and off. None of that reproduces the pixelated screen.

I downloaded the 10.14.1 installer from here, https://support.apple.com/kb/DL1981 but it didn't prompt me to update the firmware like it has in the past. What am I doing wrong?

 

[Ludacrisvp]

I tried jiggling the cable, unplugging it and reconnecting it, turning the monitor on and off. None of that reproduces the pixelated screen.

I downloaded the 10.14.1 installer from here, https://support.apple.com/kb/DL1981 but it didn't prompt me to update the firmware like it has in the past. What am I doing wrong?

I believe you need the full install package, this appears to just be the updater from 10.14.0 -> 10.14.1.

You might get lucky with the above suggestions but I'm thinking more along the lines of hardware issue, like the video card is toast. Do you have an alternate GPU to test with? or an alternate display to test with? (like a TV for example)

 

[tsialex]

Can you guys help me get to the bottom of this?

Here are some photos of what is happening. It's been happening since I upgraded to Mojave, and I think before but I can't remember.

I've also added some screenshots of my specs.

Graphics card is a Gigabyte.

I have a 1TB SSD sitting on an Apricorn Velocity Solo x2.

It happens randomly about once or twice a day. The screen goes all pixelated and I'm forced to hold the power switch until it shuts down.

View attachment 803437 View attachment 803438 View attachment 803439 View attachment 803440 View attachment 803441 View attachment 803442

This is the perfect example of VRAM corruption, did you bought your GPU new?

Cards used for mining usually have the VRAM overclocked, if it's a used one flash the original firmware and test it again.

 

[doobydoooby]

I had a similar problem a few years ago and it was my graphics card that was broken: the pixelated screen and blocks are very symptomatic of it. If you have another graphics card to slot in and compare that will help you isolate if its the problem. Hopefully yours is still under warranty since it's so new.

 

[ifrit05]

Classic GPU VRAM artifacts. You need a new card.

 

[eyeangle]

Thanks so much for your help. I haven't got another graphics card or monitor to test but going off what you've said I'm pretty sure it's the graphics card. I'm desperately looking around for my receipt to see if it's still under warranty.

Also, I successfully updated my firmware to 140.0.0.0.0. I had to download the full installer from the Mac App Store to do it instead of just the update.

 

[HiroThreading]

Video card problem. Get a new video card.

 

[Pressure]

You could edit the bios with PolarisBiosEditor in Windows and try to downclock the memory to see if that fixes the issue.