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R5F1 Dvd issue *Fixed* http://forums.linhes.org/viewtopic.php?f=2&t=15597 |
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Author: | Daved [ Tue Jun 12, 2007 6:36 pm ] |
Post subject: | R5F1 Dvd issue *Fixed* |
I am getting choppy dvd playback with any movie. First thing I check for is if the drive is using DMA. Well it's not. So I turn it on with the following command: Code: hdparm -qd 1 /dev/dvd also tried Code: hdparm -qd 1 /dev/hdc
It shows that DMA is enabled. However, when I play the movie, it's still choppy and hdparm shows it's not enabled. I've tried it with and without the movie playing but still get the same results. Anyone have a hint on how I can get DMA to work properly. I didn't have this issue with R5E50 and the same hardware. |
Author: | tjc [ Tue Jun 12, 2007 8:16 pm ] |
Post subject: | |
This thread may give you some things to check... http://mysettopbox.tv/phpBB2/viewtopic.php?t=15413&highlight=hdparm |
Author: | Daved [ Tue Jun 12, 2007 9:27 pm ] |
Post subject: | |
Thanks tjc for the link. I did all the suggestions in that thread, however, still not showing dma enabled. It's still disabled when I play the dvd. |
Author: | tjc [ Wed Jun 13, 2007 5:32 pm ] |
Post subject: | |
You made sure something else wasn't turning it off as described there? |
Author: | Daved [ Wed Jun 13, 2007 7:47 pm ] |
Post subject: | |
I disabled the hdparm init script, then tried. Still happening. Another symptom, if dma is enabled on the dvd and put a movie, it plays for about 30 seconds the kicks me back to the menu. When I issue "hdparm -qd1 /dev/hdc" while the movie is playing, it also kicks back to the menu. |
Author: | manicmike [ Thu Jun 14, 2007 12:06 am ] |
Post subject: | |
Daved wrote: I disabled the hdparm init script, then tried. Still happening. Another symptom, if dma is enabled on the dvd and put a movie, it plays for about 30 seconds the kicks me back to the menu. When I issue "hdparm -qd1 /dev/hdc" while the movie is playing, it also kicks back to the menu. Try adding Quote: /dev/hda {
dma = on } to /etc/hdparm.conf Then reboot the machine. |
Author: | tophee [ Thu Jun 14, 2007 3:59 am ] |
Post subject: | |
This is probably really obvious and perhaps not necessary any more (?) but have you added he other DMA optimisations? They're on the wiki Here's the important bit: Quote: open up /etc/init.d/bootmisc.sh
look at the section at the end titled # Enable DMA here is what mine looks like # enable DMA /sbin/hdparm -qd1c1u1m16 /dev/hda /sbin/hdparm -qd1c1u1 /dev/hdc /sbin/hdparm -qd1c1u1m16 /dev/hdb note: /dev/hdc is my dvd drive; you can't set m16 on it. The full article is here: http://www.knoppmythwiki.org/index.php?page=Optimize+Hard+Drive+Performance |
Author: | slowtolearn [ Thu Jun 14, 2007 8:03 am ] |
Post subject: | |
manicmike wrote: Try adding ITYM /dev/hdc
Quote: /dev/hda { dma = on } to /etc/hdparm.conf Then reboot the machine. |
Author: | Daved [ Thu Jun 14, 2007 12:27 pm ] |
Post subject: | |
Quote: Try adding Quote: /dev/hda { dma = on } to /etc/hdparm.conf Then reboot the machine. Just got done trying this. Still no avail Also , tried this Quote: open up /etc/init.d/bootmisc.sh
look at the section at the end titled # Enable DMA here is what mine looks like # enable DMA /sbin/hdparm -qd1c1u1m16 /dev/hda /sbin/hdparm -qd1c1u1 /dev/hdc /sbin/hdparm -qd1c1u1m16 /dev/hdb note: /dev/hdc is my dvd drive; you can't set m16 on it. I wonder if I need to do the same as this chap http://mysettopbox.tv/phpBB2/viewtopic.php?t=14046? |
Author: | Daved [ Mon Sep 03, 2007 10:12 am ] |
Post subject: | |
Just a follow up. I found the problem with the DMA issue I was having. It ended up being a bad IDE cable. All that time spent troubleshooting, never thought about replacing a brand new cable. |
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