Hi All

I have been getting this error often lately "Segmentation fault in thread Main thread at address 0x0". Only info on Avid boards about it is about corrupt databases from posts going back a number of years-like 2005. Is it possibly because along with my modern drives I have (2) Thunderbolt 2 lacies? I trashed all my databases and rebuilt. Have a number of folders within my MXF folders some withup to 5k worth of mxf files. Crashes my system every time it ocurrs. Any solution? Also Avid link crashing a number of times.

MAC Studio 13.4.1

Avid MC 2023.3.1

Avid Link 2023.6.1

Unfortunately that's the generic crash error.  Time for some questions:

1. Does it happen on any project can it be isolated to specific projects?  

2, Do you have a Blackmagic or AJA I/O device feeding an external video monitor?

3. Are your external drives spinning down between use (it's a setting in the Energy Saver or Battery settings)?

4. Can you run the Blackmagic Disk Utility to check the speed of your connected drives?  The 2 Thunderbolt Lacies should be about the same which should be something between 100 to 400 Mb/s depening on how many drives are in each unit.

5. Does the problem persist with a new user? No need to change any settings, the defaults will be sufficient to see if it makes any difference.

6. What's the format of the project?  HD, UHD, somthing else?

7. Check your system report to confirm that all drives are connected via Thunderbolt (or USB if that's what's expected).

8. Is there something you're doing that preceeds the crash?  Trimming,  making a new bin, ordering a latte?  Anything?

Thanks for your thourough response.

1. I did make a new user settings but when this first started to happen I went back to my old one where it didn't use to happen but does now. Trashed all my media databases.

2. No Black magic devices.

3. The drives may spin down from time to time but this never was a problem for the previous 8 years I have had them. Not sure how to change this but will look into it if you believe it would help but I think it would increase wear and tear.

4. 220 mbs read and write which has been great for 1 or 2 channels 1080 video and light VFX. SSD drives around 700mb.

- Might it have anything to do with amount of folders in MXF and number of files ? All less than 5000 files per folder.

5. Started on a new user but can do another and a reinstal if that might help. Trashed Site Stting ans MC state. 

6. all 1080 23.976 projects. Might do a 4k in the future.

7. I believe plugged in properly using usb and adapters and an old powered hub. Looked about and googled but cannot find report. Mac Studio has multiple USB C and A.

8. Not sure what preceeds crash generall trimming and stuff. Just turned off open GL in Video display settings which can cause crashess when in trim mode maybe that will stop things.

Again thanks for the questions. The old thunderbolt drives are 10 and 6 TB any cheap modern solutions to replace. I'm a bit of a pack rat with footage. Also and reccomendations on a modern USB hub?

Thanks again for your help.

One other thing please. I have been using Avid for many years now and I am always looking to get faster. Do you know of any master editing classes. I mean high level stuff. Most of the stuff online is great but aimed and beginners.I really have to wade through the stuff to find nuggets. Any thoughts?

Thanks

I thought I would jump into this thread because I had the EXACT same error and it got really bad. I have a Mac studio like you, running OSX 13.4. I had the error appear in both MC 2023.3 and 2022.12.4. I never attempted 2023.3.1.

At the time when I first reported it there wasn't much information available to help fix it and I logged a support case with some helpful folks at Avid who were trying to help me get it resolved.

I'm providing answers to the questions below in hopes that it can help towards the technical team trying to find out what's happening so they can get it sorted.

1. I got the error on multiple projects, it was never isolated to just one.

2. I do have a Blackmagic device connected but I also tried running the software with it disconnected and all drivers uninstalled and the problem still occured

3. I've turned the energy saver option for drives off

4. I get disk speeds of write: 850mbs, read: 915mbs. I have an external SSD drive connected via TB3.

5. I tried setting up completely new user profiles and it made no difference

6. The projects I worked on were all HD1080

7. Yes all TB external connected

8. The crash happened regardless of what was being done. Sometimes during trimming, other timeline activities. At one point it happened when I was just changing some user settings and hadn't even started editing.

The crash made Avid essentially unusable for me.

In the end, the only solution I could find was rolling all the way back to MC 2021.12.8. I no longer received this error on that version and was able to get pretty solid and usable performance. I have remained on that version since but today I'm going to attempt 2021.12.9 to see if that still works.

Given your experience with getting the dreaded Segmentation Fault, I won't bother trying 2023.3.1 as the bug is obviously still present.

Best,

Adam

Hi, 

Try this link https://www.avid.com/es/learning/find-a-course maybe the MC200 Levels are for you

;)

Here are some things to try:

Settings/Projects/Video Display Settings: Turn off Dual Copy Engine (Open CL).  You can also try turning off "Use enhanced precision in viewer calculatons" to see if it makes any difference.

Settings/Site/Media Cache/Video Memory: It might be set to 2 GB. It could go much higher.  Try clicking on the "Current" box and setting the desired video memory to that size.

And 2023.3.1 seems to have some substantial stability improvements.

Thanks for the reply.

For what it's worth, I've tried the Video Memory change before and it didn't make any difference. Enhanced precision was off for me as well.

Best,

Adam

For what it's worth - I've had this problem for a few years, luckily I simply come out of Avid and relaunch and it goes away.

Guess I'm lucky, although could do without it. Tried clearing hard drives (G Tech) but it always seems to come back.

Still running an Imac with an early version of Avid 7.4 (2014) and it runs like new.  In unison I've purchased a new Mac studio and ran the new Avid (2022) for a year until my new subscription ran out, then wouldn't update.  But thats another problem.