DVD DMA issues

[eZEKIEL]

I just bought an Acer dvp1640a dvd drive and after i installed it windows booted up without the dma box checked. So i simply checked dma and rebooted, only to find that it was again unchecked when i rebooted. I made sure dma was on in the bios for that controller/device, nadn even tried with it off, i am at a loss, and dvd playback is terrible w/o it. any help is much appreciated...

 

[Pederv]

In the bios, in the standard setup(where you do the hard drives and date), set the IDE device your cd is hooked up to as AUTO. If it is AUTO change it to NONE.

 

[eZEKIEL]

thanks, but did not work, dma still resets on reboot

 

[okydoky]

The chipset drivers for your motherboard may be the issue here. Some drivers from "some manufacturers state that DMA is enabled automatically if it is capable of being used for a particular device. AMD chipsets have these said drivers. My board is inclusive. I use the "standard" Microsoft drivers (Not the EIDE driver of course!!!) and all is well. Although I still use the AGP miniport drivers and IRQ drivers for the chipset. I now have DMA and flawless DVD. I say flawless... That might be stretching it... But very, very nice... Hope this helps. Good luck...

Edit: In my rambling, I failed to actually ask: Have U updated your motherboard drivers???

 

[Pederv]

I flashed a friend's bios earlier this evening and I watched his cd's do the following:
CDROM________BEFORE FLASH______AFTER FLASH
kenwood 72X____UDMA______________PIO4
plextor r/w______PIO4______________UDMA

Makes things a little interesting?

 

[okydoky]

A Homer Simpson "Doh!!!" goes out to ya, Pederv...

 

[Pederv]

With his system, windows would let him set DMA even when the bios showed the drive as PIO4. When the kenwood showed PIO4 in the bios and he enabled the DMA, he got corupt installations when he used the kenwood. When the plextor showed PIO4 in the bios and he enabled DMA, if he installed Liveware3.0 his plextor disappeared.
This example and others I've run into leads me to believe that most of the cdrom problems are caused by windows and the bios not seeing eye to eye on how data transfer to/from the cdroms should be implemented.

 

[okydoky]

Good info... Thanks...

 

[Demon-Xanth]

I have a CL DVD that is doing that on a P5A motherboard. When I first installed Win98 it would crash windows if enabled (I've freed up some DMA channels since then). Now I cannot get it enabled. (and windows likes to reset the computer for unknown reasons)

 

[Jackyra]

Hey,

I've been having the exact same problem with my DVD drive and Hdd. My DVD playback was really choppy and i couldn't get the DMA box to stay checked after rebooting. After fiddleing with my system for untold hours i think i stumbled across a fix.
First I checked out my Hard Disk controller on Win98's system properties and changed the "Dual IDE Channel Settings" menu on the "Settings" tab from "Default" to "Both IDE Channels enabled". I then restarted my computer and went into the BIOS. I then changed the "DMA Resources" to manual as opposed to "Auto" on the "PNP...Resources" page (not sure if this actually accomplishes anything) and continued to load Windows. The DMA on my DVD and Hdd were automatically enabled after that. Before turning off your computer though, recheck the Hard Disk controller to make sure the settings haven't been reset to Default. If thats the case just change it back to "Dual...". Hope this helps some.

Later,

Jack


I've got a:
Abit BE6 II V1.2
Pioneer 105s DVD (hooked up to secondary IDE controller)
Creative 4224 CDRW(secondary UDMA controller)
Matrox 10 Gig (Primary IDE controller)
Western Digital 30Gb(Primary UDMA controller)
128MB SDram
Win98SE (Had same problem in W2K)

 

[UrineSample]

I just had the same thing on two asus boards...cubx and cuvx. it seems that anytime i had a card in slot three dma would not enable...i had to leave it empty. final config that worked was agp vid...nic in slot2 sharing irq with promise controller, sound in slot4 sharing irq with modem in slot5.

gl

 

[FredC]

I'm having a similar problem with my MSI K7T Turbo Raid Board. My CL 12x DVD resets to DMS box not checked when I restart my computer. I have installed the ATAPI/IDE drivers from VIA 4 in 1 2.8 or.28. It still wouldn't keep teh box checked, so I had also set the VIS IDE controller to both instead of default under hard disk controllers. Everything seemed ok sfter I restarted, the DMA was checked and speed was good. But later when I restarted, my machine would hiccup in the startup process and load 1/2 way then reset. This caused the machine to say windows did not load properly, and I was forced into Safemode.
I tried a few things, but Ultimately had to remove the VIA ide driver to get the machine to stop resetting into safe. So I'm back at step one, no DMA on DVD. What to do?

 

[TrackStar]

I have the same problem with my abit bm6 mobo. I have toshiba sd-m1212 and a plextor on the second channel with tthe plextor as master.
DMA always unchecks itself on the toshiba drive. I tried messing with the bios and disabling sb16 emulation but i can't get the box to stay checked. I really would appreciate some help with the issue