Re: MSI DR8-A2 DVD-Writer with dvd+rw-tools version 5.19.x
I have activated the DMA mode
hdparm -d1 -X66 /dev/hdc
an now k3b displays a permanent write speed from 3,9x
This is very good because the medium is only for 4x writing...
Thank you for the fast and good help !!
Mfg Frieder
Andy Polyakov <appro@fy.chalmers.se> schrieb am 18.05.04 18:44:16:
>
> It's as important to keep discussion on the list as to pose initial
> requests to the list. Therefore I send a copy of my reply to list.
>
> > I have downloadet the newest version dvd+rw-tools-5.19-1.4.9.7.tar.gz
> >
> > but the problem is always there...
>
> I didn't say it fixes your speed selection problem with your particular
> unit. 5.19-1 prevents you from running into another problem and is a
> *mandatory* update for *all* 5.19 users.
>
> > sometimes k3b says the writing speed is 2,8x but then it goes back to 2,2x ....
>
> Varying speed in progress indicator most likely indicate that DMA is
> off. Verify DMA setting with hdparm and engage it if it's off.
>
> > here my "dvd+rw-mediainfo /dev/dvdrecorder verbose" output:
> >
> > INQUIRY: [ATAPI ][DVD RW 8XMax ][140D]
> > ...
> > GET CURRENT PERFORMANCE: 00 00 00 00 00 00 00 00 00 00 15 a4 00 23 05 3f 00 00 15 a4
> ^^ Firmware should have returned 2 in
> this position. Value of 2 would indicate that following data is *write*
> speed descriptor, while value of 0 indicates that it's *read*
> descriptor, which is why growisofs terminates. I mean point is that
> growisofs tries to verify if speed setting was successful, it does ask
> for *write* descriptor, but apparently gets read descriptor. It's
> clearly a firmware deficiency. Check vendor site for firmware update.
>
> Even if it's not fixed in new firmware yet, you should always be able to
> temporarily work around the problem by first issuing growisofs with
> desired -speed argument and have it fail, and then [without re-loading
> media!] re-issuing same command *without* -speed to perform the actual
> recording. A.
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