cdrom not found

Silverghost29 · April 6, 2011, 7:26pm

Hi.
Newbie for a couple of months now. Made the break from MS; totally.

Running OpenSuse 11.4, desktop, KDE4, on a Toshiba NB500 netbook. Tried netbook style but disliked it so I run desktop style. Internet access is via wireless adaptor only. Ethernet access is not available where I live. One main issue is the external dvdrw.

I have correctly identified the device as first boot device in the Bios and correctly saved settings.
Following boot the computer displays the cd/dvd options, live and install as the case may be.
whichever option I select-live or install-there is no further exchange to or from the external dvdrw.

Subsequent error messages are similar irrespective of Linux OS types; i.e. No media file detected. No cdrom detected. Timed out, no device. (tried Ubuntu, Lubuntu, Mandriva, OpenSuse, Mint, PCLinuxOS, Knoppix. no luck in any of them).

Note: The dvdrw is of course an external slimline cnm dvdrw.
Also cannot write to dvdrw’s, nor cdrw’s, nor read from them, nor play music cd’s, nor play film dvd’s either. In fact I had to create the usb installer used to install OpenSuse to my netbook because I could not do so from a bona fide installation dvd.

Soooooooooo…I am effectively stuck up a gum tree with a ‘dormant’ dvdrw…

If anyone knows how to resolve this then do please let me know. Many thanks.

stamostolias · April 6, 2011, 7:28pm

Go to yast–>software–>Check media and see if your system see your cd-rom.

djh-novell · April 7, 2011, 11:59am

Silverghost29 wrote:
> Newbie for a couple of months now. Made the break from MS; totally.

Congratulations!

> Running OpenSuse 11.4, desktop, KDE4, on a Toshiba NB500 netbook. Tried
> netbook style but disliked it so I run desktop style. Internet access
> is via wireless adaptor only. Ethernet access is not available where I
> live. One main issue is the external dvdrw.

It’s not really relevant, but do you mean wi-fi or 3G phone-based.

> 1) I have correctly identified the device as first boot device in the
> Bios and correctly saved settings.
> 2) Following boot the computer displays the cd/dvd options, live and
> install as the case may be.
> 3) whichever option I select-live or install-there is no further
> exchange to or from the external dvdrw.

It sounds like your hardware is capable of dealing with the drive but
the linux kernel is not, for some reason, possibly because you need a
newer kernel.

So to help you we need to know as much as possible about your hardware.
Please post the output, using CODE tags, of:

dmesg
lspci
lsusb

> Subsequent error messages are similar irrespective of Linux OS types;
> i.e. No media file detected. No cdrom detected. Timed out, no device.
> (tried Ubuntu, Lubuntu, Mandriva, OpenSuse, Mint, PCLinuxOS, Knoppix. no
> luck in any of them).

Did you use the latest version of Knoppix?

> Note: The dvdrw is of course an external slimline cnm dvdrw.

What is ‘cnm’?

> Also cannot write to dvdrw’s, nor cdrw’s, nor read from them, nor play
> music cd’s, nor play film dvd’s either. In fact I had to create the
> usb installer used to install OpenSuse to my netbook because I could not
> do so from a bona fide installation dvd.

Silverghost29 · April 7, 2011, 10:37pm

Silverghost29:

Hi.
Newbie for a couple of months now. Made the break from MS; totally.

Running OpenSuse 11.4, desktop, KDE4, on a Toshiba NB500 netbook. Tried netbook style but disliked it so I run desktop style. Internet access is via wireless adaptor only. Ethernet access is not available where I live. One main issue is the external dvdrw.

I have correctly identified the device as first boot device in the Bios and correctly saved settings.

Following boot the computer displays the cd/dvd options, live and install as the case may be.

whichever option I select-live or install-there is no further exchange to or from the external dvdrw.

Subsequent error messages are similar irrespective of Linux OS types; i.e. No media file detected. No cdrom detected. Timed out, no device. (tried Ubuntu, Lubuntu, Mandriva, OpenSuse, Mint, PCLinuxOS, Knoppix. no luck in any of them).

Note: The dvdrw is of course an external slimline cnm dvdrw.
Also cannot write to dvdrw’s, nor cdrw’s, nor read from them, nor play music cd’s, nor play film dvd’s either. In fact I had to create the usb installer used to install OpenSuse to my netbook because I could not do so from a bona fide installation dvd.

Soooooooooo…I am effectively stuck up a gum tree with a ‘dormant’ dvdrw…

If anyone knows how to resolve this then do please let me know. Many thanks.

Hi.

Thanks. Weird because it does recognise the device as existing and notes it to be: HL-DT-ST DVDRAM GT20N
Also details of mount point; ‘/dev/sr0’

Did identify the dvd in the drive and verified it’s content. But still no action when it comes to working! I have tried the dvdrw on a friends computer and it works fine, so it is not a case of it having developed a mechanical, electrical, or optical fault.

Anyway…I am sure whatever is the root cause will be identified and suitably resolved…hopefully sooner though…

Silverghost29 · April 7, 2011, 11:01pm

Hi.
Thanks. I am loving having made the total change to Linux and expected a few issues, or glitches along the way, but it all goes to make a day…or week…

Apologies. CNM is the brand of dvdrw; as in CNM Lifestyle Electronics. Wifi adaptor. Not 3G nor other sim card MBB dongles. Ah, as regards Knoppix version the disc was lent by a friend who has had it back. I believe it was the most recent version he obtained via Linux Magazine. He lent the Mandriva Free dvd too. My OpenSuse dvd was from issue 144 Linux Format which I thought I would install and if liked it then buy the boxed set.

Code tags? Ah…just ‘remind’ me please…where would I ‘find’ those?

Here are details gleaned from lspci, lsusb, dmesg. I have not included the full output from dmesg-just section re: dvd (or did you want the full output?).

SilverGhost29 output lspci

/sbin/lspci
00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller
00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
07:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

SilverGhost29 output lsusb
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 148f:2573 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter
Bus 001 Device 003: ID 0bda:0138 Realtek Semiconductor Corp.
Bus 001 Device 006: ID 04fc:0c25 Sunplus Technology Co., Ltd SATALink SPIF225A

SilverGhost29 output dmesg

6450.440111] usb 1-5: new high speed USB device using ehci_hcd and address 6
6450.575637] usb 1-5: New USB device found, idVendor=04fc, idProduct=0c25
6450.575650] usb 1-5: New USB device strings: Mfr=2, Product=3, SerialNumber=1
6450.575662] usb 1-5: Product: USB to Serial-ATA bridge
6450.575670] usb 1-5: Manufacturer: Sunplus Technology Co.,Ltd.
6450.578670] usb 1-5: selecting invalid altsetting 1
6450.579203] scsi5 : usb-storage 1-5:1.0
6451.582086] scsi 5:0:0:0: CD-ROM HL-DT-ST DVDRAM GT20N CQ02 PQ: 0 ANSI: 0
6451.807296] sr0: scsi3-mmc drive: 62x/24x writer dvd-ram cd/rw xa/form2 cdda tray
6451.807310] cdrom: Uniform CD-ROM driver Revision: 3.20
6451.807846] sr 5:0:0:0: Attached scsi

Also; the dvdrw is identified in media check, via Yast, as: HL-DT-ST DVDRAM GT20N /dev/sr0
I did insert a dvd and it correctly identified the disc and verified the content.
The device does still work, perfectly, when connected to a friend’s computer…who, regrettably, is not using a Linux OS…yet

Regards.

brunomcl · April 8, 2011, 5:39am

Since it is an external drive, it might be a permission issue. Check out the /dev/sr0 permissions, see to what group it belongs (probably cdrom, the owner is always root), if the group has r/w permissions and add your user to the cdrom group, if it’s not there already.

Silverghost29 · April 12, 2011, 3:30pm

Hi.
Thanks. It does say crdom and it is root. Nothing about rw that I can see.

Couple of Linux users have suggested possible kernel configuration issue…seems a bit like my entering the “demilitarized zone” or even the “twilight zone” though I am sure it is not as bad as that…maybe…but I am learning a lot in the process !

user · April 12, 2011, 5:38pm

Silverghost29 wrote:

>
> Hi.
> Thanks. It does say crdom and it is root. Nothing about rw
that I can
> see.
>
> Couple of Linux users have suggested possible kernel
configuration
> issue…seems a bit like my entering the “demilitarized
zone” or even
> the “twilight zone” though I am sure it is not as
bad as
> that…maybe…but I am learning a lot in the process !
>
>
You can use
<code>
ls -l /dev/sr0
</code>

should return something like
<code>
brw-rw----+ 1 root cdrom 11, 0 Apr 12 08:14 /dev/sr0
</code>

I have also found that it sometimes needs your user to be in
the cdrom, video and audio groups.

This can be done as root thru YaST -->Security and Users →
User and group Management.

Hope this helps.

–
Russ
openSUSE 11.4 MS1 (2.6.37.1-1.2-desktop)|Platform Version
4.6.2 (4.6.2) “release 3”|Intel core2duo 2.5 MHZ,|8GB DDR3|
GeForce 8400GS (NVIDIA-Linux-x86_64-270.18)

Silverghost29 · April 21, 2011, 3:08am

Thanks for the extra advice. Appreciated as always.
I have tried that since and ensured it is in those groups too, but with the same negative result afterwards.
Certainly a persistent issue but it wont put me off Linux.

As regards installing Linux OS’s I can create live / install usb installers and install them that way. A bit disappointing I cannot try various Linux software direct from Linux publications cover dvd’s but not the end of the World.

Thanks again for the advice though. At least it was another avenue to try out. Much appreciated I assure you.

Silverghost29 · April 21, 2011, 3:12am

Hi.
Thanks. I am loving having made the total change to Linux and expected a few issues, or glitches along the way, but it all goes to make a day…or week…

Apologies. CNM is the brand of dvdrw; as in CNM Lifestyle Electronics. Wifi adaptor. Not 3G nor other sim card MBB dongles. Ah, as regards Knoppix version the disc was lent by a friend who has had it back. I believe it was the most recent version he obtained via Linux Magazine. He lent the Mandriva Free dvd too. My OpenSuse dvd was from issue 144 Linux Format which I thought I would install and if liked it then buy the boxed set.

Code tags? Ah…just ‘remind’ me please…where would I ‘find’ those?

Here are details gleaned from lspci, lsusb, dmesg. I have not included the full output from dmesg-just section re: dvd (or did you want the full output?).

SilverGhost29 output lspci

/sbin/lspci
00:00.0 Host bridge: Intel Corporation N10 Family DMI Bridge
00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller
00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 2 (rev 02)
00:1c.2 PCI bridge: Intel Corporation N10/ICH 7 Family PCI Express Port 3 (rev 02)
00:1d.0 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation N10/ICH 7 Family USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation N10/ICH 7 Family USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation NM10 Family LPC Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation N10/ICH7 Family SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation N10/ICH 7 Family SMBus Controller (rev 02)
07:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8188CE 802.11b/g/n WiFi Adapter (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

SilverGhost29 output lsusb
lsusb
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 148f:2573 Ralink Technology, Corp. RT2501/RT2573 Wireless Adapter
Bus 001 Device 003: ID 0bda:0138 Realtek Semiconductor Corp.
Bus 001 Device 006: ID 04fc:0c25 Sunplus Technology Co., Ltd SATALink SPIF225A

SilverGhost29 output dmesg

6450.440111] usb 1-5: new high speed USB device using ehci_hcd and address 6
6450.575637] usb 1-5: New USB device found, idVendor=04fc, idProduct=0c25
6450.575650] usb 1-5: New USB device strings: Mfr=2, Product=3, SerialNumber=1
6450.575662] usb 1-5: Product: USB to Serial-ATA bridge
6450.575670] usb 1-5: Manufacturer: Sunplus Technology Co.,Ltd.
6450.578670] usb 1-5: selecting invalid altsetting 1
6450.579203] scsi5 : usb-storage 1-5:1.0
6451.582086] scsi 5:0:0:0: CD-ROM HL-DT-ST DVDRAM GT20N CQ02 PQ: 0 ANSI: 0
6451.807296] sr0: scsi3-mmc drive: 62x/24x writer dvd-ram cd/rw xa/form2 cdda tray
6451.807310] cdrom: Uniform CD-ROM driver Revision: 3.20
6451.807846] sr 5:0:0:0: Attached scsi

Also; the dvdrw is identified in media check, via Yast, as: HL-DT-ST DVDRAM GT20N /dev/sr0
I did insert a dvd and it correctly identified the disc and verified the content.
The device does still work, perfectly, when connected to a friend’s computer…who, regrettably, is not using a Linux OS…yet

Regards.

robin_listas · April 22, 2011, 12:08am

On 2011-04-07 23:06, Silverghost29 wrote:
> Code tags? Ah…just ‘remind’ me please…where would I ‘find’
> those?

Advanced edit mode.

–
Cheers / Saludos,

Carlos E. R.
(from 11.2 x86_64 “Emerald” at Telcontar)

makauskas · December 5, 2012, 8:59pm

I have same problem on suse 11.4, but with internal IDE device.

/var/log/boot.msg
…
sd 0:0:0:0: Attached scsi generic sg0 type 0

ls -l /dev/sg0
…
crw-rw-rw- 1 root disk 21,0 sg0

remains in YaST repository:
cd:///?devices=/dev/disk/by-id/ata-ATAPI_DVD_A_DH20A4H
but in /dev/disk not exists

hwinfo --cdrom

not found any

mount -t iso9660 /dev/sg0 /media/cdrom
…/dev/sg0 not a block device

robin_listas · December 5, 2012, 11:48pm

On 2012-12-05 21:06, makauskas wrote:
>
> I have same problem on suse 11.4, but with internal IDE device.
>
> /var/log/boot.msg
> …
> sd 0:0:0:0: Attached scsi generic sg0 type 0

Please, code tags… use code tags…

> mount -t iso9660 /dev/sg0 /media/cdrom
> …/dev/sg0 not a block device


file -s /dev/sg0

–
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)

user · December 5, 2012, 11:50pm

On 12/05/2012 09:06 PM, makauskas wrote:
> I have same problem on suse 11.4, but with internal IDE device.

first: 11.4 is past its end of life (cite:
http://en.opensuse.org/Lifetime, no longer receiving security
patches through normal means. It therefore should not be exposed to
untrusted networks (including the internet or any net with any machine
on that net connected to the internet) unless it incorporates Evergreen,
http://tinyurl.com/4aflkpy

second: so you are running KDE4 on a Toshiba NB500 netbook with a
internal CNM (brand) Lifestyle Electronics DVD/RW which is not ‘seen’ by
the out of date operating system, correct?

can you tell me if that system ever before was able to access/read
from/or burn to that device?

if so, maybe you just have a loose connection to the DVD drive…have
you dropped the netbook? if so, maybe a plug fell out of place…

hmmmmm…i didn’t know Toshiba netbooks had internal DVD drives…

you might see if Toshiba has published tech data on how to disassemble
and remove/replace that drive…if you can find that (and are competent
to do major surgery) you might consider checking to see if the device is
plugged in, both with a data and a power cable…

on the other hand, DVD drives do fail…maybe yours has…how old is it?

–
dd http://tinyurl.com/DD-Caveat

makauskas · December 6, 2012, 7:12pm

But this thread exists. Google direct to it from wery first line. Do I create new thread?

some never patching system and they are happy

No problem. Use my old PIII-800 with RAM 512. Computer is more than enough for me. I’m not use Xwin.

No. It’s common question.

I’ve boot computer with live suse cd and write now. It’s exists /livecd in root with bootrd cd content. I see block device /dev/sr0 in addition to character /dev/sg0. Cd unit exists in /dev/disk too.

I’m interesting how disappear device in system and how can I restore it. Suse 11.4? Ok. How can I restore device in suse 12.1 or 12.2?

user · December 6, 2012, 9:06pm

> I’m interesting how disappear device in system and how can I restore
> it.

sounds like a hardware problem…
maybe, just plug it back in…
maybe, just replace the cable betweeen the DVD and the motherboard…
maybe, buy a new DVD player/writer…

if you don’t answer questions it is impossible to tell from here.

–
dd

robin_listas · December 7, 2012, 11:53am

On 2012-12-06 21:06, dd wrote:
>> I’m interesting how disappear device in system and how can I restore
>> it.
>
> sounds like a hardware problem…
> maybe, just plug it back in…
> maybe, just replace the cable betweeen the DVD and the motherboard…
> maybe, buy a new DVD player/writer…
>
> if you don’t answer questions it is impossible to tell from here.

Both sg0 and sr0 may and may not exist at the same time. The kernel doc
says:


21 char        Generic SCSI access
0 = /dev/sg0          First generic SCSI device
1 = /dev/sg1          Second generic SCSI device

11 block       SCSI CD-ROM devices
0 = /dev/scd0         First SCSI CD-ROM
1 = /dev/scd1         Second SCSI CD-ROM
...

The prefix /dev/sr (instead of /dev/scd) has been
deprecated.

I think that sg is the device used for burning, but I’m not sure. Or
maybe one for CD-rom only, the other for DVDs too. In any case, use sr0
for mounting:


> cer@Telcontar:~> l /dev/cdrom
> lrwxrwxrwx 1 root root 3 Nov 28 02:15 /dev/cdrom -> sr0
> cer@Telcontar:~> l /dev/dvd
> lrwxrwxrwx 1 root root 3 Nov 28 02:15 /dev/dvd -> sr0
> cer@Telcontar:~>

–
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)

makauskas · December 8, 2012, 6:36pm

My problem disapear when disable secondary master in BIOS.

/dev directory is filled on every booting on the fly. sg0 and sr0 are created in the /dev now.

it may be helps others