Jerky DVD Playback

kag

Golden Member
May 21, 2001
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www.boloxe.com
I've had my DVD-Rom for almost 2 years now, and I've had this problem 3-4 times before, but I always managed to find a way out.

I would watch a DVD and the video would be jerky as hell... I would go in my Device Manager to find out that my DVD is set to "UltraDMA if available" but running on PIO... I would go in the registry to delete the MasterIdChecksum and SlaveIdChecksum keys - that would "reset" the drive to UltraDMA. I assume you have heard about that trick and know why it is used and how it works (going back to PIO after 6 CRC errors).

Anyway I currently have the same jerkyness on DVD playback, but WinXP tells me my DVD is running in "UltraDMA Mode 3", so I'm confused. I have deleted the mentionned keys, re-installed the latest 4-in-1's, uninstalled my VIA Bus Master Controller, uninstalled my Primary IDE Bus (where my DVD is)... I don't know what to do anymore.

This might be a shot in the dark, but I suspect it's running in PIO mode even if it's shown as UltraDMA... anyway there is my configuration:
MSI-6309 (version 1) on Apollo 133A chip
P3-667EB
256MB of Micron PC133 CAS3
Maxtor 91366U4 ATA66
Pioneer 106S ATAT66 (both on same channel)

Physically speaking, I'm positive that my machine is okay because I've been running this exact setup for more than a year without any trouble.

I have tried with PowerDVD 4, NVDVD, Windows Media Player and they all do the same thing.

Is there a patch or something that I could try?
 

DieHardware

Golden Member
Jan 1, 2001
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Have you tried a different IDE cable? Have you tried running the DVD-ROM on the other channel? Also I'd check to see if there is a firmware update for the drive...might be worth a try.
 

kag

Golden Member
May 21, 2001
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www.boloxe.com
The DVD is ATA66 compatible... and on my other channel, I have a LiteOn burner which is ATA33, so this is why I keep the DVD on the same channel as my ATA66 hard drive. But even then, it has been working for a year, it's not like I had played with my computer in the last two months.

The drive itself is already running the latest firmware. And I have updated everything I could possibly think about :(

Thanks for your time
 

DieHardware

Golden Member
Jan 1, 2001
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Originally posted by: kag
Originally posted by: BOBBY RIBS
Get a Dell, dude.

...
I guess that was the postcount++ kind of post...

Well maybe not, your posts are confusing. Example: In your second post you wrote:
The DVD is ATA66 compatible... and on my other channel, I have a LiteOn burner which is ATA33, so this is why I keep the DVD on the same channel as my ATA66 hard drive
Well where is it?...on the primary or secondary IDE channel? You also didn't say if you tried a different IDE cable.

Oh and btw on modern MBs it shouldn't matter if the DVD(ATA66) is one with the CD(ATA33), it should still run at ATA66 with an 80wire cable. And I doubt it would use the extra speed anyway.
 

kag

Golden Member
May 21, 2001
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www.boloxe.com
Primary channel :
- Master = ATA66 HD
- Slave = ATA66 DVD

Secondary channel:
- Master = ATA33 CD Burner

Yes I did try to move the drive alone on the second channel, and it did the same thing.
 

GoingUp

Lifer
Jul 31, 2002
16,720
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do you have the latest direct x pack? that can fix the dvd problems you are havin...

also if its software decoding, make sure nothing else is runnin in the background thats processor intensive or youll get choppy rates.
 

kag

Golden Member
May 21, 2001
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www.boloxe.com
Yes, I did update everything I could on WindowsUpdate. And I rebooted so nothing was running elsewhere.

I have a weird problem huh?