I wanted to pass along a tip that BLKDOG and myself have worked out that has alleviated most of the Bus errors we had been seeing.

Go to any folder that has to do with the Avid (Projects folder, User Folder, Application folder, etc.) and open the permissions on each for read/write across the board. Change all of the groups to the Current user (In my case all of my folder's Group permissions changed from STAFF to todd) and give that user read/write. Then change the others tab to read/write as well. Apply this to all of the folder's contents.  Then lock the permissions.

Once we had done this for every folder associated with the Avid Application, our Bus errors have virtually stopped.

By no means is this a sure fire fix for this very annoying error, but it has been very helpful for me.  I have not had a bus error in weeks now.  BLKDOG has also experienced a dramatic decrease in Bus Error crashes.

I recommend anyone experiencing these errors make this very easy tweak to their permissions settings.  It can't hurt and may very well allieviate much of your pain.

Very good tip. If you have a series of bus errors, despite having followed Todd's suggestion, you can run Disk Utility (or better, DiskWarrior) on your media drives. Sometimes, a drive get a damaged directory, which then confuses the Avid when counting the files in the MediaFiles folder.

does this fix apply in a LANSHARE situation?

I cant seem to get to where i need to to change GROUP permissions on the mounted workspace...

I'm not a Lanshare user, so I do not know.  I'll ping someone who is and see if they can respond to your question about 'how' to change the settings and also if you should in that setup.

Unity and/or LANshare Workspaces appear as mountd nework volumes to the OS.  Therefore, you cannot modify the permissions, as they are set during their creation or the mounting process.

They're still hitting me hard. 3 bus errors (and software crashes) in 3 hours. That's after I tried this tip.

Anybody on Unity or Lanshare have any luck with this tip, applying it where possible (not the media drives)?
I get series of these crashes and then it runs for several hours fine. I don't think I've had a day without at least one. Since I'm on a 1.8DP, just underpowered and not on the approved list, I've ordered a 2.7DP to eliminate that question. Hate to spend the money if it doesn't help, but I can't have this crashing when our director's around!

I have changed all my premissions to match what Todd has recommended and I still get this error about 5-6 times a day with a 2.5DP. I don't think it's the 1.8DP thats causing the error.

I have been having a lot of trouble with this myself. Five Media Composer Adrenalines v 2.6.1 on Dual 2.7 G5s. All media and projects are on a Lanshare EX via ethernet. Changing the owner of the "shared" user from "system" to the active user does help.

Anyone know of any progress being made on this?

I can tell you that things are better in 2.7.x. Todd and I worked out this permissions thing and it has virtually erased all of my Bus errors.

As Todd says, bus errors are caused by a lot of factors, the error is generic and could refer to bigger problems in an individual's system. Bad media can cause this so open the permissions up wide on your drives and OMFI filders too to eliminate that as a possibility. Change read/write for the OMFI folders and their contents.

3rd party plugs in 5.6.x can also cause these problems. A great deal of these issues have been worked out in the next release.

If, after 2.7.x comes out and you are still getting these problems, please post back here so that we can help you work through them.

Runing 2.7 for all of 1/2 hr before I got my first bus error. How sweet is that!

Installed repaired permissions etc.. and then BOOM on import..


Mark Johnson

Mark,

Please post your drive configuration.  I have not seen any bus errors yet, but it's still early.

I was having numerous bus errors on my underqualified 1.8DP, and despite advice that it had nothing to do with it, I purchased a 2.7DP and have only had one bus error in two weeks. And I'm running this box with EnergySaver/Processor Performance set to reduced to keep those pesky fans from being so hyperactive.
Brian

I have a mediadock ultra 320 w/8 146's striped into 2 drives.


Mark

Thanks Mark,

I'm compiling users drive configurations as it pertains to this error.  I'll update this thread if and when I know anything.

Todd