Re: [arch-general] DVD's won't read
jue, mar 18, 2010 at 06:07:20 +0530, Nilesh Govindarajan dijo: Hi,
I'm experiencing this problem from quite a long time. But I don't know why.
I have a LG DVD Writer. It supports writing and reading DVD-R DVD+R DVD-RW DVD+RW, all CDs and some other DVD flavors I don't remember.
I tried a Fedora boot DVD at boot, it worked. But inside arch (it was the same problem with fedora), it won't work.
I don't think this needs any special driver because previously I'd never configured a special driver for that.
CD's work fine though.
it's sata or ide? when i started using linux i had to change the 40 "strings" ide cable to one of 80, due to troubles while reading/writing dvds...
hope this helps :)
Its connected by IDE now. I have a SATA converter with me though. Should I use that for my drive ?
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto -- Il messaggio e' stato analizzato alla ricerca di virus o contenuti pericolosi da MailScanner, ed e' risultato non infetto.
On Thu, Mar 18, 2010 at 1:02 PM, Roberto Malinverni < roberto.malinverni@dico.coop.it> wrote:
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto
-- Il messaggio e' stato analizzato alla ricerca di virus o contenuti pericolosi da MailScanner, ed e' risultato non infetto.
Hi, I'm not sure if it's the best solution. Nilesh said that it works on fedora, so it must be some sort of software config for this. In fact this really got my attention, since I have no clue why such workaround works. If you know why, please share with us. -- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
On 03/18/2010 09:54 PM, Felipe Tanus wrote:
On Thu, Mar 18, 2010 at 1:02 PM, Roberto Malinverni< roberto.malinverni@dico.coop.it> wrote:
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto
-- Il messaggio e' stato analizzato alla ricerca di virus o contenuti pericolosi da MailScanner, ed e' risultato non infetto.
Hi, I'm not sure if it's the best solution. Nilesh said that it works on fedora, so it must be some sort of software config for this. In fact this really got my attention, since I have no clue why such workaround works. If you know why, please share with us.
I never said it works on fedora !! It used to work. But later it stopped working. -- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
I never said it works on fedora !! It used to work. But later it stopped working.
-- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
Here another world mistery was born and died by miss comunication :) sorry for the noise. -- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
On 03/18/2010 09:32 PM, Roberto Malinverni wrote:
jue, mar 18, 2010 at 06:07:20 +0530, Nilesh Govindarajan dijo: Hi,
I'm experiencing this problem from quite a long time. But I don't know why.
I have a LG DVD Writer. It supports writing and reading DVD-R DVD+R DVD-RW DVD+RW, all CDs and some other DVD flavors I don't remember.
I tried a Fedora boot DVD at boot, it worked. But inside arch (it was the same problem with fedora), it won't work.
I don't think this needs any special driver because previously I'd never configured a special driver for that.
CD's work fine though.
it's sata or ide? when i started using linux i had to change the 40 "strings" ide cable to one of 80, due to troubles while reading/writing dvds...
hope this helps :)
Its connected by IDE now. I have a SATA converter with me though. Should I use that for my drive ?
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto
My drive has in total only 40 pins. How an 80 pin connector would fit into it ? -- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
jue, mar 18, 2010 at 10:20:21 +0530, Nilesh Govindarajan dijo:
On 03/18/2010 09:32 PM, Roberto Malinverni wrote:
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto
My drive has in total only 40 pins. How an 80 pin connector would fit into it ?
it's the same connector with more conductors -- Salud! Nicolás Reynolds, xmpp:fauno@kiwwwi.com.ar omb:http://identi.ca/fauno blog:http://selfdandi.com.ar/ gnu/linux user #455044 http://librecultivo.org.ar http://parabolagnulinux.org
On 03/18/2010 10:29 PM, Nicolás Reynolds wrote:
jue, mar 18, 2010 at 10:20:21 +0530, Nilesh Govindarajan dijo:
On 03/18/2010 09:32 PM, Roberto Malinverni wrote:
Nope. If it is a ide device, just check that your ide cable is of the type with 80 conductors. Take a look at the images here, to see the difference between a 40 and a 80 conductor cable (both have 40 pin). My NEC DVDRW refused to work without such a cable. Roberto
My drive has in total only 40 pins. How an 80 pin connector would fit into it ?
it's the same connector with more conductors
Here are some images of the connector I use - http://simplest-image-hosting.net/i0-pict0238-jpg.jpg http://simplest-image-hosting.net/i0-pict0239-jpg.jpg http://simplest-image-hosting.net/i0-pict0240-jpg-0.jpg This contains 40 pins and fits exactly into the socket of the drive. Show me some photos of 80 pin connector :) Do you think converting it to SATA using IDE-SATA converter will work ? -- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
Here are some images of the connector I use - http://simplest-image-hosting.net/i0-pict0238-jpg.jpg http://simplest-image-hosting.net/i0-pict0239-jpg.jpg http://simplest-image-hosting.net/i0-pict0240-jpg-0.jpg
This contains 40 pins and fits exactly into the socket of the drive. Show me some photos of 80 pin connector :)
http://c-online.co.il/var/6894/226692-IDE_cable_40_pin_&_80_pin.jpg The yellow one is 80 pin. There is no diference in the connector.
Do you think converting it to SATA using IDE-SATA converter will work ?
I'm not familiar with this connector, but may be worth to try if you already have one. It probabily don't if you have to use your 40pin cable to connect the HD to the connector, but who knows? :)
-- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
-- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
On 03/18/2010 10:57 PM, Felipe Tanus wrote:
Here are some images of the connector I use - http://simplest-image-hosting.net/i0-pict0238-jpg.jpg http://simplest-image-hosting.net/i0-pict0239-jpg.jpg http://simplest-image-hosting.net/i0-pict0240-jpg-0.jpg
This contains 40 pins and fits exactly into the socket of the drive. Show me some photos of 80 pin connector :)
http://c-online.co.il/var/6894/226692-IDE_cable_40_pin_&_80_pin.jpg
The yellow one is 80 pin. There is no diference in the connector.
Do you think converting it to SATA using IDE-SATA converter will work ?
I'm not familiar with this connector, but may be worth to try if you already have one. It probabily don't if you have to use your 40pin cable to connect the HD to the connector, but who knows? :)
-- Nilesh Govindarajan Site& Server Adminstrator www.itech7.com
I don't see any great difference in both cables except for that one pin being closed. Also in my drive the pin which is blocked in the 80 pin connector is absent. So how the cable change is going to make any difference ? -- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
On Thu, Mar 18, 2010 at 11:01:55PM +0530, Nilesh Govindarajan wrote:
Also in my drive the pin which is blocked in the 80 pin connector is absent. So how the cable change is going to make any difference ?
It has a different impedance, and that can make all the difference at high clock speeds. Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte !
Also in my drive the pin which is blocked in the 80 pin connector is absent. So how the cable change is going to make any difference ?
-- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
If you look closely in the image you'll see that the yellow has more wires than the gray one. I'm not sure how it is going to make difference, but they said that it's the way to go. I was googling about this right now and find nothing proibitive for DVDs with a 40 ways cable. That's why it got my attention at the first time. If someone knows why that, please share :) -- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
I don't see any great difference in both cables except for that one pin being closed.
Also in my drive the pin which is blocked in the 80 pin connector is absent. So how the cable change is going to make any difference ?
Google and wikipedia are your friends ;) http://en.wikipedia.org/wiki/Parallel_ATA#Parallel_ATA_interface The parallel interface is being replaced by a serial interface but the wikipedia page is still a good read, there are still lots of old machines using only the parallel interface so it's good to know these things.
On 18-03-10 19:16, Mauro Santos wrote:
I don't see any great difference in both cables except for that one pin being closed.
Also in my drive the pin which is blocked in the 80 pin connector is absent. So how the cable change is going to make any difference ?
Google and wikipedia are your friends ;)
http://en.wikipedia.org/wiki/Parallel_ATA#Parallel_ATA_interface
The parallel interface is being replaced by a serial interface but the wikipedia page is still a good read, there are still lots of old machines using only the parallel interface so it's good to know these things.
Actually, serial is what the S in SATA stands for ;). And that's also why ATA is called PATA nowadays. IDE/ATA == parallel, SATA == serial. About the difference between 40 and 80 wires a cable is about signal noise. The 80 wires are there to improve the signal/noise ratio for the increased clockspeeds on the cable. See for example: http://www.pcguide.com/ref/hdd/if/ide/confCable80-c.html Both connectors are physically compatible. HTH, HAND mvg, Guus
Okay _some_ success after converting it to SATA using IDE<=>SATA chip. It now reads DVD's inside the OS too. But it doesn't read either CDs or DVDs from the RW group. This is drive failure or I seriously need an 80 pin cable ? The SATA connector looks like the one with 40 pins; But I'm unsure. -- Nilesh Govindarajan Site & Server Adminstrator www.itech7.com
On 19-03-10 06:28, Nilesh Govindarajan wrote:
Okay _some_ success after converting it to SATA using IDE<=>SATA chip. It now reads DVD's inside the OS too.
But it doesn't read either CDs or DVDs from the RW group. This is drive failure or I seriously need an 80 pin cable ?
I used to tell people that it couldn't hurt to use the better quality (80 wire) cables, but i would not be suprised if those are neccesary with current drives. Are the 40-wires types even still available? Getting a new 80-wire (P)ATA cable shouldn't cost more than a few bucks, so maybe that is an option? Also, does dmesg tell you anything when trying to read a DVD? mvg, Guus
On Fri, Mar 19, 2010 at 5:27 PM, Guus Snijders <gsnijders@gmail.com> wrote:
I used to tell people that it couldn't hurt to use the better quality (80 wire) cables, but i would not be suprised if those are neccesary with current drives. Are the 40-wires types even still available?
Getting a new 80-wire (P)ATA cable shouldn't cost more than a few bucks, so maybe that is an option?
Also, does dmesg tell you anything when trying to read a DVD?
mvg, Guus
Hey, I'm not sure if you guys agree with me, but I believe that if it can read DVD with a 40 wires flat cable on the boot, it *must* be able to read with the same cable in the OS. I understand that it *may* solve the issue, but I believe that it is more than a hardware issue, it's a software. I believe the right thing to do was to check a bugtracker, but i'm not sure which one to check . Maybe Linux kernel one? Finally, I ask again: Does someone has at least a thought about why a 40-wired cable works in the boot of the computer but not in the OS, and a 80-wired cable could fix the issue? thanks, -- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
On 03/19/2010 09:52 PM, Felipe Tanus wrote:
Finally, I ask again: Does someone has at least a thought about why a 40-wired cable works in the boot of the computer but not in the OS, and a 80-wired cable could fix the issue?
Maybe because the bios sets some conservative settings and the latest kernel then overrides them with more aggressive (faster) settings. Maybe you have a drive that supports ata66 (or claims to support), the kernel then tries to set things to work at that speed but the cable can't handle it. Maybe you can try to force a slower speed in the bios or try to tell the libata module to force a slower speed. Check the output of 'modinfo libata' and go from there. However I guess that if the problem is the cable you should see lots of errors on the output of dmesg when trying to read a cd or dvd.
I forgot to tell you all something which I observed. Since the DVD drive was not working with the 40 pin cable, I removed it and connected my old CD-RW drive. That used to read CD-RW too. But this DVD drive won't read. So I feel this is a drive error. What do you say ? -- Nilesh Govindarajan Site & Server Administrator www.itech7.com
On Fri, Mar 19, 2010 at 6:27 PM, Mauro Santos <registo.mailling@gmail.com>wrote:
On 03/19/2010 09:52 PM, Felipe Tanus wrote:
Finally, I ask again: Does someone has at least a thought about why a 40-wired cable works in the boot of the computer but not in the OS, and a 80-wired cable could fix the issue?
Maybe because the bios sets some conservative settings and the latest kernel then overrides them with more aggressive (faster) settings.
Maybe you have a drive that supports ata66 (or claims to support), the kernel then tries to set things to work at that speed but the cable can't handle it.
Maybe you can try to force a slower speed in the bios or try to tell the libata module to force a slower speed. Check the output of 'modinfo libata' and go from there.
However I guess that if the problem is the cable you should see lots of errors on the output of dmesg when trying to read a cd or dvd.
Mauro, Thank you. That was just the kind of answer that I was waiting to hear. It really clarified the problem for me. -- Felipe de Oliveira Tanus E-mail: fotanus@gmail.com Blog: http://www.itlife.com.br Site: http://www.inf.ufrgs.br/~fotanus/ ----- "All we have to decide is what to do with the time that is given us." - Gandalf
On 03/20/2010 03:57 AM, Mauro Santos wrote:
On 03/19/2010 09:52 PM, Felipe Tanus wrote:
Finally, I ask again: Does someone has at least a thought about why a 40-wired cable works in the boot of the computer but not in the OS, and a 80-wired cable could fix the issue?
Maybe because the bios sets some conservative settings and the latest kernel then overrides them with more aggressive (faster) settings.
Maybe you have a drive that supports ata66 (or claims to support), the kernel then tries to set things to work at that speed but the cable can't handle it.
Maybe you can try to force a slower speed in the bios or try to tell the libata module to force a slower speed. Check the output of 'modinfo libata' and go from there.
However I guess that if the problem is the cable you should see lots of errors on the output of dmesg when trying to read a cd or dvd.
How to change the settings ? I don't think this is a speed issue because CD-R and DVD+-R work whereas CD-RW and DVD+-RW do not. I'll also try this :) -- Nilesh Govindarajan Site & Server Administrator www.itech7.com
Its probably a drive failure because I connected it using the 80 pin cable as suggested by some of you in the thread. I didn't see any difference in the cable I purchased and I had previously :( Still CD-R and DVD+-R do read, but CD-RW and DVD+-RW won't. I think I'll get a new drive. Any more suggestions before I purchase a drive ? -- Nilesh Govindarajan Site & Server Administrator www.itech7.com
On 03/20/2010 01:29 PM, Nilesh Govindarajan wrote:
Its probably a drive failure because I connected it using the 80 pin cable as suggested by some of you in the thread. I didn't see any difference in the cable I purchased and I had previously :(
Still CD-R and DVD+-R do read, but CD-RW and DVD+-RW won't.
I think I'll get a new drive. Any more suggestions before I purchase a drive ?
Maybe try an older kernel, maybe there is some nasty regression that prevents things from working. If nothing works then it's time to get a new drive (or test with a borrowed drive).
On Sa, 2010-03-20 at 18:59 +0530, Nilesh Govindarajan wrote:
Any more suggestions before I purchase a drive ?
Have you looked for a firmware upgrade? Maybe there is a newer firmware. Normally you'll find them on the website of your drive's manufactor. -- Best regards, Karol Babioch <karol@babioch.de>
participants (8)
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Felipe Tanus
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fons＠kokkinizita.net
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Guus Snijders
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Karol Babioch
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Mauro Santos
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Nicolás Reynolds
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Nilesh Govindarajan
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Roberto Malinverni