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#139980 12/09/11 04:42 PM
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pwarren Offline OP
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Is anyone else having this problem?

Amplitube loads and runs fine with ASIO4All as my audio driver and it sounds really good. However, when the song ends, or when I push the stop button, I get a memory access error in Amplitube3.exe causing BiaB to hang.

It's a shame because under MME I get a lot of distortion and dropouts, ontop of the expected latency.

Any ideas for a fix?


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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Running XP SP3 w/ASIO4ALL here and during beta, didn't get that FWIW.

Try all the usual stuff, reboot the puter, try again, if no joy, try a Return to Factory, etc.

Don't know if that's a cure, but it couldn't hurt to try and may shed more light.


--Mac

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Here's some further info. Got my MME drivers working properly. For some reason MME wasn't working well with my onboard sound card disabled. By re-enabling it I can use Amplitube for now but the latency is anissue for my controller.

Tried Amplitude on a second PC with the same results. It works under MME. With Asio4All it works until the song ends, or I push the stop button. The it gives a memory access error in Amplitube3.exe and partially hangs BiaB. It can be shut down with the task manager but it's messy.

So, has anyone else run amplitube while using Asio4All? Do you get the same result? Any ideas for a work around beside what I listed above? Thanks.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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One more idea:

I long ago set my Disk Cache manually to twice the physical ramsize rather than "let windows" decide how big and when...

Am thinking that, if the plugin needs physical ram that isn't available, the windows allocated disk swap is unable to keep up with things and creates the inevitable timing problem.

Don't forget that a reboot is mandatory after changing the cache size like that.


--Mac

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Quote:

Running XP SP3 w/ASIO4ALL here and during beta, didn't get that FWIW.




Ok, thanks. So the problem has either been introduced since beta or is related to both my systems. BTW, what version of Asio4All do you have Mac? Maybe there's a newer version than 2.0 that I'm using.

Quote:

Try all the usual stuff, reboot the puter, try again, if no joy, try a Return to Factory, etc.

Don't know if that's a cure, but it couldn't hurt to try and may shed more light.




Already tried all the obvious fixes Mac. Thanks anyway.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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Quote:

One more idea:

I long ago set my Disk Cache manually to twice the physical ramsize rather than "let windows" decide how big and when...

Am thinking that, if the plugin needs physical ram that isn't available, the windows allocated disk swap is unable to keep up with things and creates the inevitable timing problem.

Don't forget that a reboot is mandatory after changing the cache size like that.




That's a possibility. I've manually set the disk Cache in the past to cure problems with other software and hardware. This PC is managed automatically so there might be a chance for a fix there. I'll try later and report back.

Thanks again.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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Yes, I'm running ASIO4ALL V2 also.

Check above, my post about resetting the cache size.

**ALSO - if your machine is running any kind of Power Saving, whether laptop or not, that should be turned OFF in Control Panel. Especially any of those schemes that ramp the CPU processing up and down to conserve power. They simply can't respond fast enough for this kind of work.


--Mac

Last edited by Mac; 12/10/11 10:54 AM.
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pwarren Offline OP
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Quote:

Yes, I'm running ASIO4ALL V2 also.




Just upgraded to v2.10, no change. Still ends with memory access error in amplitube 3.vpa.

Quote:

Check above, my post about resetting the cache size.




I set disk cache to max. no change.

Quote:

**ALSO - if your machine is running any kind of Power Saving, whether laptop or not, that should be turned OFF in Control Panel. Especially any of those schemes that ramp the CPU processing up and down to conserve power. They simply can't respond fast enough for this kind of work.




Thanks. I always turn off all power saving features because of the potential problems. I also turned off all unnecessary screen animations etc. to no effect.

The problem still seems to be in amplitube. The system is reading an invalid address in amplitube 3.vpa. Maybe someone from PGM might have some ideas if they see this. Also, I may contact support later when I have the time.

Thanks Mac.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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Quote:

I set disk cache to max. no change.




Well, that's hardly the same as, "twice your physical ram size" and I would be cautious about such an extreme setting causing timing errors as well...


--Mac

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pwarren Offline OP
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Quote:

Quote:

I set disk cache to max. no change.




Well, that's hardly the same as, "twice your physical ram size" and I would be cautious about such an extreme setting causing timing errors as well...


--Mac




Actually, the max on this system is 4GB so it's double the RAN size (2GB)

However, I found the problem. It's a conflict with sfz sound font player. Now I need to find a replacement SF player that'll work.

Thanks for the help Mac.


BiaB 2013 b366, RB 2013 b4, WinXP Pro SP3, Toshiba M70, 1.8GHz 2GB RAM 100GB HD. Focusrite Saffire 6 USB, Ketron SD2.BiaB Wiki
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