dma problems

thanks to creaky, I enabled dma when using dvd decrypter and it works great. saves much time decrypting. however, my son came home from the army and I put dvd decrypter and dvd shrink on his laptop. tis a good machine he just bought. however, I have been unable to decrypt at more than 2.1x. I have checked both primary/secondary controllers and even uninstalled and rebooted, etc. both say dma is enabled, but still unable to decrypt very fast at all. on my machine I had to uninstall and reboot and now i decrypt at speeds of >8x. I even updated his Nero software to the latest version. no luck. anyone have any idea why I cannot decrypt over 2.1x on his new laptop?? what am I missing here? I even thought I saw something about "enable dma" in dvd decrypter, but cannot find even that in it's settings. this is driving me crazy, as it should be able to decrypt using dma very fast, but isn't.

 

Well based on personal experience I'd say that laptops are generally slower than PCs. Even more so when it's an external burner. You can't really choose your decrypt speed. How much RAM does it have?

 

Some DVD drives have riplocks which act as governors limiting the ripping speed of the drive. My NEC 3540 came riplocked at 5X but after flashing modded firmware, it now rips at up to 9.2X on DL disks. Tell us the brand, model number, and firmware version for the drive and we'll see if any modified firmware with the riplock removed exists for the burner.

 

But keep in mind that flashing your drive w/ incorrect firmware will void pretty much all warrenty and you may not be able to flash back to official f/w if you should ever decide to.

 

it has 1024 ram with 2.6mz speed. gateway athlon. I remember when I first started decrypting on my own desktop--decrypt speed was at 1.8x or so. then creaky told me about dma must be enabled. now I decrypt on my desktop at up to 8x or so. nice. but, on my son's laptop, cannot get up beyond 2.1x decrypt. I even uninstalled alot of crap from his laptop and did a defrag, etc. I have learned an awful lot about how to make good backups on this site and sure appreciate it---compared to when I first started, but I cannot figure out if his decrypting at only 2.1x is normal for a laptop or not. takes an awful long time to decrypt, and when you then ad in the shirnk burning, a real waste of time.

 

Like laddyboy said we are going to need your burner's model number. Also ask your son if he is multi-tasking. See if it changes if he justleaves it alone. One more thing: Download Ad-Aware (free), it's one of the best spy/mal/adware remover I've known free or not free. Adware, spyware and malware can slow your comp down.

 

@cziembo

Well, since you've tried to uninstall the drivers/controllers already and DMA is enabled, but it still rip/decrypt at 2.1X speed. The only suggestion I can think of is to "set the read speed" inside Tools, Settings and Device. Look at picture below for reference. Honestly, I wouldn't go any beyond 8X even if it's reading/ripping/decrypting only.

 

Thanks to all for the advice. I installed and ran cc cleaner and adaware on his machine. I also set the read speed to 8x instead of max. I finally got dvd decrypter to read at 3.4x at times, tho usually between 2.5x and 2.8x. His dvd drive is: HL-DT-ST-DVD-RW GCA-4080N 0G34. At least this is the description in device manager and in system info. I have no idea what this brand would be---perhaps made in someone's garage? I am the one trying to get this to work better and do not multi-task while decrypting. He has alot of games on the machine and it is not now hooked up to the internet here. Something is holding up the speed and if you have any ideas, let me know, else he will have to live with a slow decryption. I burned war of the worlds today on it and tho very slow, it decrypts and burns a pretty good copy. thanks again.

 

That's a LG burner. I was not able to find any info regarding a riplock for the burner. There is firmware for removing the RPCII protection. I have a Compaq laptop drive that reads pressed DLs about the same speed as you are experiencing which is why I use a NEC 3540 burner in an external enclosure with the laptop.