Undo disabled due to file size

[Anonymous]

My undo command keeps getting disabled. The bigger the dwg size the faster I get this message(see pic below). This strated for us on 2013 and remains in 2014.

I changed the save location for "Temp dwg files". The idea was to keep minimum files in this location.

The file higlighted in the picture is the problem. AutoCad is not rewriting this file as in the past.

Is this a programming issue?

Autodesk was contacted thourgh my sales rep, with no resolve.

[Kent1Cooper]

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@Anonymous wrote:

My undo command keeps getting disabled. The bigger the dwg size the faster I get this message.....

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Do you periodically dump the Undo information when you've gotten to a reasonable place where you feel sure you won't need to back up, and Saved the drawing?  UNDO command, Control option, None option to get rid of what it has kept track of so far [the key to reducing the file size], then UNDO, Control option, All option to have it start keeping track again.

[pendean]

System details? OS looks to be Win7 (64bit I hope), but how about RAM, free HD space on your primary C drive etc.
is your Windows Log-in credentials limitng you to 2 Gig? a common 'quota' limit in some corporations in user temp folders.
And how long do you go between manual saves?
How long do you keep your file open in a day to trigger this limit?

[braudpat]

Hello from France

As far as I know, the maximum file size of the undo file is 2 Gb

and ACAD (for security) purpose disable the undo feature at 1.75 Gb (as you have seen) ...

Which size for your main DWG ?

Which OS ?

32 or 64 bits ?

How much Ram on your PC ?

[Anonymous]

Win 7 pro, 64bit, 4gb ram.

I have had it happen in 30mins while working on a 10mb dwg. Keep in mind on r2012 had none of these issues.

[nrz13]

There is a known problem with AutoCAD 2015 using onboard graphics cards over dedicated ones.  If that is the case for you, the difference between 2012 and 2015 may be that your onboard graphics is using up a good chunk of what little memory you have left over.  4GB is not very much RAM these days. 

You can test this theory by going to OPTIONS > System tab > Graphics Performance button and seeing if the video card being recognized is your dedicated card or the onboard graphics.  If it is using your onboard graphics, you'll probably have to disable them in your BIOS so AutoCAD can see your dedicated card.

[Anonymous]

The "view tune log" is showing my card. There was no change after I updated the video card driver.

[nrz13]

Well, it was a guess, but it appears to not be the case if GRAPHICSCONFIG is showing your dedicated card in use.