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[DVD] Lecture saccadée
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linor
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Joined: 14 Sep 2003
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PostPosted: Mon Nov 03, 2003 7:30 pm    Post subject: [DVD] Lecture saccadée Reply with quote

Salut à tous.

Voilà. Je possède un lecteur DVD et un graveur CD, les deux IDE mais emulées SCSI. (dvd : /dev/sr0 - graveur : /dev/sr1)
Lors de la lecture d'un dvd, le film saccade... Beurk !!!
Alors g cherché et g pensé au DMA. Alors:

hdparm -d 1 -c 1 /dev/sr0

et là

/dev/sr0 not supported by hdparm

Je comprends plus rien moi ! HELP !
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linor
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PostPosted: Mon Nov 03, 2003 7:56 pm    Post subject: Reply with quote

Je viens de trouver quelque chose:

NOTE (devfs and ide-scsi): If you use devfs and ide-scsi you won't get any /dev/hdc device to run hdparm on (if /dev/hdc is the dvd drive using ide-scsi). Instead you need to use 'hdparm -d 1 /dev/ide/host0/bus1/target0/lun0/generic'.

Alors le pb c que dans /dev/ide/host0/bus1/target0/lun0/ g rien.
alors:
# ls -l /dev/ide/host0/bus0/target0/lun0/
total 0
brw------- 1 root root 3, 0 Jan 1 1970 disc
brw------- 1 root root 3, 1 Jan 1 1970 part1
brw------- 1 root root 3, 2 Jan 1 1970 part2
brw------- 1 root root 3, 3 Jan 1 1970 part3


bash-2.05b# hdparm -d 1 -c 1 /dev/ide/host0/bus0/target0/lun0/disc
/dev/ide/host0/bus0/target0/lun0/disc:
setting 32-bit IO_support flag to 1
setting using_dma to 1 (on)
IO_support = 1 (32-bit)
using_dma = 1 (on)

Et toujouyrs les saccades...
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DuF
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Joined: 09 Dec 2002
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PostPosted: Mon Nov 03, 2003 11:16 pm    Post subject: Reply with quote

Je n'y connais trop rien pour la lecture de DVD, mais peut être est-ce un problème de client et non de ta configuration hardware.
Essayes avec un autre lecteur (compare entre mplayer, xine et vlc par exemple).
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yuk159
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Joined: 18 Apr 2003
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Location: noumea ,nouvelle-caledonie

PostPosted: Tue Nov 04, 2003 8:12 am    Post subject: Reply with quote

essaye ceci :
Code:
echo using_dma:1 >/proc/ide/hdc/settings

Si cela fonctionne, tu le rajoute dans /etc/conf.d/local.start, comme ca tu n'aura pas a le mettre a chaque demarrage
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linor
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PostPosted: Tue Nov 04, 2003 1:20 pm    Post subject: Reply with quote

Yuk merci mille fois !

Ta solution marche à la perfection, donc plus de saccades
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