No CD ROM.

klohs · 2009-10-17 19:49:21

Ok, this is driving me crazy.
There is no cd/dvd device anymore. It wont even eject, even when I exit linux. Is it something with BIOS? Cause I did not find anything usefull there.
I remember it working a couple of weeks ago. I don't use cd rom that much, but now I desperately need it. Can it be because of pacman update or something?

Just in case fstab and mtab:

#
# /etc/fstab: static file system information
#
# <file system> <dir> <type> <options> <dump> <pass>
none /dev/pts devpts defaults 0 0
none /dev/shm tmpfs defaults 0 0
#/dev/cdrom /media/cd auto ro,user,noauto,unhide 0 0
#/dev/dvd /media/dvd auto ro,user,noauto,unhide 0 0
#/dev/fd0 /media/fl auto user,noauto 0 0
UUID=3c83779a-25f0-40bc-9fa0-018a76212dbd /boot ext2 defaults 0 1
UUID=74f24032-f37e-4e32-a0ea-aca82b95bf78 /home ext3 defaults 0 1
UUID=d7f4934d-a66f-4bea-838f-38f006f10dc9 / ext3 defaults 0 1
UUID=f147880f-28e2-43b4-b771-20960c064445 swap swap defaults 0 0

/dev/sda3 / ext3 rw 0 0
none /dev tmpfs rw,relatime,mode=755 0 0
none /proc proc rw,relatime 0 0
none /sys sysfs rw,relatime 0 0
none /dev/pts devpts rw 0 0
none /dev/shm tmpfs rw 0 0
/dev/sda1 /boot ext2 rw 0 0
/dev/sda4 /home ext3 rw 0 0
gvfs-fuse-daemon /home/klohs/.gvfs fuse.gvfs-fuse-daemon rw,nosuid,nodev,user=klohs 0 0

klohs · 2009-10-18 10:44:43

Anybody?
I tried removing battery from my laptop and then putting it back. After that the cd rom starts spinning real fast and then it dies again. I guess it could be a hardware problem, but I hardly ever used that cd rom and this laptop has never been damaged.

Blue Peppers · 2009-10-18 11:04:35

Can I ask what you mean by no CD device any more? What is the output of "ls /dev | grep cd"? For ejecting does "sudo eject -T" do anything? Sorry if you've already done this, could you say what you have tried so far to get it working please.

Gnux · 2009-10-18 11:40:02

Blue Peppers wrote:

Can I ask what you mean by no CD device any more? What is the output of "ls /dev | grep cd"? For ejecting does "sudo eject -T" do anything? Sorry if you've already done this, could you say what you have tried so far to get it working please.

I suppose it means that when he puts a cd in the device he cant read it coz he isn't auto-mounted anymore.

So to mount a cdrom so that you could read it anew :

#mount /dev/cdrom /mnt

If it's a read-only dvd/cd you'll have a sentence saying it. Then normally you could access to the contents of your cd/dvd through /mnt.

Then if you want your cd/dvd/usbstick being mounted automatically, just take a look at autofs

If it doesn't answer to your problem, could you be more accurate in your problem's description ?

klohs · 2009-10-18 15:19:58

Thanks for answering!
Well, what I am trying to say is that no cd/dvd device shows up. I cant even eject the tray.
There is no /dev/cdrom.
And ls /dev | grep cd outputs nothing.
It is like there is no cdrom.
Basically, what I am asking is - is there a way to make linux see/detect the cdrom?

flamelab · 2009-10-18 15:27:44

Have you got devicekit packages installed anywhere ?

klohs · 2009-10-18 15:35:33

flamelab wrote:

Have you got devicekit packages installed anywhere ?

Yes I have it apparently.

flamelab · 2009-10-18 15:37:16

Try to remove them, they may cause such problems.

Last edited by flamelab (2009-10-18 15:37:40)

klohs · 2009-10-18 16:05:39

flamelab wrote:

Try to remove them, they may cause such problems.

Did not help.

flamelab · 2009-10-18 16:10:52

Restart HAL and relogin into your WM or DE.

klohs · 2009-10-18 16:23:36

Yes, yes, I tried. Still the same.

flamelab · 2009-10-18 16:51:00

Try

su

mkdir /mnt/cd

mount /dev/sr0 /mnt/cd

What do you see in /mnt/cd ? (you must have something in the drive)

klohs · 2009-10-18 16:57:51

flamelab wrote:

Try
su
mkdir /mnt/cd
mount /dev/sr0 /mnt/cd

When I try to mount it says I must specify the filesystem type.

flamelab wrote:

What do you see in /mnt/cd ? (you must have something in the drive)

You want me to insert a cd into the cdrom drive? I mentioned that i can't eject the tray (not with the eject button).

eldarion · 2009-10-19 15:56:02

what is the output of "lsmod | grep cd" ?

For what i understand, udev automatically creates the devices when you load the apropriate modules. So, take a look at the output of the command on top and see if you have the "ide_cd_mod", "cdrom", ... modules loaded.

grey · 2009-10-19 16:33:46

What happens if you try "eject -v" ?

Last edited by grey (2009-10-19 16:35:09)

klohs · 2009-10-20 10:20:30

eldarion wrote:

what is the output of "lsmod | grep cd" ?
For what i understand, udev automatically creates the devices when you load the apropriate modules. So, take a look at the output of the command on top and see if you have the "ide_cd_mod", "cdrom", ... modules loaded.

[klohs@gauss ~]$ lsmod | grep cd
uhci_hcd 27232 0
ehci_hcd 41808 0
usbcore 183764 6 btusb,usb_storage,uvcvideo,uhci_hcd,ehci_hcd

grey wrote:

What happens if you try "eject -v" ?

[klohs@gauss ~]$ eject -v
eject: using default device `cdrom'
eject: device name is `cdrom'
eject: unable to find or open device for: `cdrom'

zveroboy · 2009-10-20 13:42:57

klohs,

I know I am stating the obvious but it seems like the cdrom is not detected on a more basic/low level. So, does your computer bios detect it on boot? Do you have another operating system installed that sees the cdrom just fine? Is it SATA or IDE?

yule · 2009-10-20 13:46:27

I don't know if it helps but you must be member of the 'optical' group in order to use optical drives. Same for the 'storage' group, for USB drives for instance.

bharani · 2009-10-20 16:43:42

Can you open your cd drive by pressing the eject button before arch boots.

If it doesn't then the fault is with your drive. Open the cabinet and check all connections to the drive.

eldarion · 2009-10-20 21:46:53

klohs wrote:

eldarion wrote:
what is the output of "lsmod | grep cd" ?
For what i understand, udev automatically creates the devices when you load the apropriate modules. So, take a look at the output of the command on top and see if you have the "ide_cd_mod", "cdrom", ... modules loaded.
[klohs@gauss ~]$ lsmod | grep cd
uhci_hcd 27232 0
ehci_hcd 41808 0
usbcore 183764 6 btusb,usb_storage,uvcvideo,uhci_hcd,ehci_hcd
grey wrote:
What happens if you try "eject -v" ?
[klohs@gauss ~]$ eject -v
eject: using default device `cdrom'
eject: device name is `cdrom'
eject: unable to find or open device for: `cdrom'

Load the "ide_cd_mod" and "cdrom" modules (modprobe <module_name>). Then take a look at /dev and see if the devices were created. If the devices were created and you can mount them, you have to manually load this modules at startup (in /etc/rc.conf)

Last edited by eldarion (2009-10-20 21:50:20)

agomezh · 2010-08-28 18:54:44

OK, I have had this problem before when I started to use linux and I don't quite remember how to fix it. Now it came back. The problem is the following, the command eject will not work because it cannot find the device 'cdrom', in fact

$ls /dev/cd* 
ls: cannot access /dev/cd*: No such file or directory

Also it won't eject even by pushing the button of the cd drive ( on the computer ), same as klohs.

Here is some information:

I used "sudo lshw -c disk" and the only output was my hard disk. With

$ lsmod | grep cd
ide_cd_mod             24177  0 
ide_core               76991  1 ide_cd_mod
cdrom                  31410  1 ide_cd_mod
uhci_hcd               19251  0 
ehci_hcd               32232  0 
usbcore               121705  4 usbhid,uhci_hcd,ehci_hcd
dcdbas                  4388  1 dell_laptop

When I start the computer I can eject the cd just before it prompts the grub menu, so I think that the drive is working, but after it reaches that it does not allow me to eject it. If I go to the bios menu I cannot eject the tray either. I remember that when it happened last time I had to eject the drive in this way and close the tray once Ubuntu started. Then it would be recognized and I could use the drive normally. Then if I ejected used the button on the tray it would stop working, of course now is not working anymore. I will try to boot from the cd drive ( I don't have any cd with me right now ), and I will post if it was successful. ( now I'm using Arch now ). Is it possible that is grub's problem?
Thank you!.

cesura · 2010-08-28 19:38:17

Please don't bump old threads. If you need help, open a new thread.
http://wiki.archlinux.org/index.php/For … Bumping.27

Last edited by cesura (2010-08-28 21:20:44)

dyscoria · 2010-08-28 21:19:42

itsbrad212 wrote:

Please don't bump old threads. If you need help, open a new thread.
http://wiki.archlinux.org/index.php/For … te#Bumping

I think this link is more appropriate for your point: Necro-Bumping

Last edited by dyscoria (2010-08-28 21:20:10)

cesura · 2010-08-28 21:21:00

dyscoria wrote:

itsbrad212 wrote:
Please don't bump old threads. If you need help, open a new thread.
http://wiki.archlinux.org/index.php/For … te#Bumping
I think this link is more appropriate for your point: Necro-Bumping

My apologies, you're right. Changed

jasonwryan · 2010-08-28 21:35:13

agomezh: you are better off starting a new thread - the OP seems to have resolved their difficulty.

itsbrad212 and dyscoria - we have a report button. Bumping the thread with competing links (about bumping) has sent this thread into a recursive nosedive.

Closing

Arch Linux

#1 2009-10-17 19:49:21

No CD ROM.

#2 2009-10-18 10:44:43

Re: No CD ROM.

#3 2009-10-18 11:04:35

Re: No CD ROM.

#4 2009-10-18 11:40:02

Re: No CD ROM.

#5 2009-10-18 15:19:58

Re: No CD ROM.

#6 2009-10-18 15:27:44

Re: No CD ROM.

#7 2009-10-18 15:35:33

Re: No CD ROM.

#8 2009-10-18 15:37:16

Re: No CD ROM.

#9 2009-10-18 16:05:39

Re: No CD ROM.

#10 2009-10-18 16:10:52

Re: No CD ROM.

#11 2009-10-18 16:23:36

Re: No CD ROM.

#12 2009-10-18 16:51:00

Re: No CD ROM.

#13 2009-10-18 16:57:51

Re: No CD ROM.

#14 2009-10-19 15:56:02

Re: No CD ROM.

#15 2009-10-19 16:33:46

Re: No CD ROM.

#16 2009-10-20 10:20:30

Re: No CD ROM.

#17 2009-10-20 13:42:57

Re: No CD ROM.

#18 2009-10-20 13:46:27

Re: No CD ROM.

#19 2009-10-20 16:43:42

Re: No CD ROM.

#20 2009-10-20 21:46:53

Re: No CD ROM.

#21 2010-08-28 18:54:44

Re: No CD ROM.

#22 2010-08-28 19:38:17

Re: No CD ROM.

#23 2010-08-28 21:19:42

Re: No CD ROM.

#24 2010-08-28 21:21:00

Re: No CD ROM.

#25 2010-08-28 21:35:13

Re: No CD ROM.

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