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> PMV 2.13: lockup after acquire
asavage
post Nov 28 2000, 02:04 PM
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From: Duvall, Washington USA
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Hello, Peter:

I have two different computers, one running the PMV under W95c, the other under OS/2 W4 FP13. The problem I'm having today is with the W95c system. It is a rather low-end system that I use for Win programs that I must occasionally use.

Asus P55 series clone
Cyrix P166+ CPU
64mb RAM
Generic/SymBios ISA SCSI for scanner only.
Scanner is Mustek Paragon 1200 A3 Pro (11"x17")

I can acquire an image via the scanner using Adobe Photoshop v5.5. I have no problems scanning this way.

PMV v2.13: Initially, I was able to acquire & Save four images by unselecting "Use buffered memory transfer", although it takes a _long_ time, perhaps three minutes. But it did work. Then I changed the scan size via (I assume) Mustek's TWAIN window, making it slightly larger, and I have been unable to Save any scans since.

When using PMV File->Acquire, the image is acquired and eventually displayed, but I cannot do anything with the image. That is, I can choose File->Save, but nothing happens -- the FOC does not open, and the menu is no longer responsive. I have waited 15 minutes with no change. I finally have to kill PMV using C-A-D->End Task.

If I enable the "buffered memory transfer", the image appears much faster, but I have the same problem with Save.

I have tried scanning many different sizes, and they all exhibit the same behaviour, small or large.

I tried a suggestion, starting pmview /ini=fresh.ini, but I assume this must be for the OS/2 version only.

Though I have registered both the OS/2 & Win versions of PMV, I rarely use the Win version, because I rarely use Win , but this Mustek scanner does not like SANE for OS/2, and it is larger than my 5P scanner that I've been using, so I thought I'd try PMV's Win Acquire. With little success.

I hope that this is a repairable problem, because Photoshop is quite poky with "only" a P166! For now, I have recommenced using Photoshop, as it still works OK.

Regards,
Al S.


--------------------
Regards, Duvall, WA
Al S. http://asavage.dyndns.org
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Peter
post Nov 28 2000, 03:39 PM
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From: Wilmington, North Carolina
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Al,

Try these four settings on the Special/TWAIN page: OFF/ON/ON/ON. (Pressing the [Default] button should give you these settings).
Please press [OK] and restart PMView so that
all settings are in effect.

Now try it. If it still does not work, then
try to disable "Use buffered memory". (Photoshop does not use buffered memory transfers).

Unfortunately it sounds like this is a problem with thread priorities. Probably the Mustek TWAIN interface does not like the fact that PMView runs at several priority levels. (PMView lowers its main priority to 0-level when communicating with TWAIN, still there might be some problem). There are two ways to solve this problem. 1. Mustek fixes its driver to behave well in multithreaded environments. 2. I add an option for running PMView at flat priority (this is a bad solution since this gives PMView an overall jerky performance).

------------------
Peter Nielsen (peter@pmview.com) "If you can dream it, you can do it" JFK.

[This message has been edited by Peter (edited November 28, 2000).]


--------------------
Peter Nielsen (peter@pmview.com) "If you can dream it, you can do it" JFK.
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asavage
post Nov 28 2000, 05:01 PM
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Thanks for the suggestions.

I have tried "Default", close PMV, restart, File->Aquire, (Scan via Mustek interface). Mustek TWAIN closes, image is shown in PMV, File->Save (menu works), but then no FOC. Wait 15 minutes, no change. C-A-D = "PMV Not Responding".

Note that PMV is not "dead" until I request File->Save. And the Mustek TWAIN is already closed.

Next, I deselected "Use buffered memory transfer", closed then restarted PMV, File->Acquire, (Scan via Mustek interface). Mustek TWAIN closes, image is shown in PMV, File->Save (menu works), but then no FOC.

Another symptom: View->Preferences is OK before I Acquire, but after I Acquire, if I choose View-Preferences, PMV closes immediately. I wish that I had the equivalent of x:popuplog.os2 for Win!

I do not understand how the thread priorities affects PMV is the Mustek TWAIN GUI is closed after transfer to PMV. There does not appear to be any unknown (to me) process running, as shown in the "Close Program" dialog (C-A-D).

Regards,
Al S.


--------------------
Regards, Duvall, WA
Al S. http://asavage.dyndns.org
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asavage
post Nov 28 2000, 05:06 PM
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"I do not understand how the thread priorities affects PMV is the Mustek TWAIN GUI is closed after transfer to PMV. "

That should have read, " . . . affects PMV _if_ the Mustek . . ."

Can a TWAIN thread be active and at a higher priority than PMV and still not have an entry on the "Close Program" C-A-D dialogue?
Regards,
Al S.


--------------------
Regards, Duvall, WA
Al S. http://asavage.dyndns.org
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Peter
post Nov 28 2000, 11:55 PM
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QUOTE
I do not understand how the thread priorities affects PMV if the Mustek TWAIN GUI is closed after transfer to PMV. There does not appear to be any unknown (to me) process running, as shown in the "Close Program" dialog (C-A-D).


Some part of it is probably still active.
Please send me a private e-mail and I'll send you a special test version with flat priority.




------------------
Peter Nielsen (peter@pmview.com) "If you can dream it, you can do it" JFK.


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Peter Nielsen (peter@pmview.com) "If you can dream it, you can do it" JFK.
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