unable to mount ANY CD

[saurabh kakkar]

unable to mount CDs

hi
i have ubuntu 7.04 installed and besides various other problem

i m having problems in mounting some CDs (ubuntu live cd ,Digit cds ) on my

ubuntu system though cd spins but i m not able to view its content and after

small interval my system hangs nothing response (i think kernal panic) and i

have to restart my

system manually i have tried to search for the solution but no help while

searching for the solution i came to know that this problem is very common

i m able to play blank cds and ubuntu alternate cd

plz help me to rectify this also suggest me a stable and promising linux distro

for a new person (for linux ) like me

 

[praka123]

this seems weird.u can try mounting manually.the format is "sudo mount /dev/hd* /mnt/ " * is the device no.also post ur /etc/fstab.

 

[saurabh kakkar]

this seems weird.u can try mounting manually.the format is "sudo mount /dev/hd* /mnt/ " * is the device no.also post ur /etc/fstab.

           gksudo gedit /etc/fstab

gives this :

# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda3
UUID=98b793fb-b4ee-41d8-b836-72b394c8e58a / ext3 defaults,errors=remount-ro 0 1
# /dev/sda8
UUID=29d5edba-dabc-44f1-aa3c-6d81f8c6a58d none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto 0 0
/dev/fd0 /media/floppy0 auto rw,user,noauto 0 0
/dev/sda1 /media/sda1 vfat users,rw,umask=000 0 0
/dev/sda5 /media/sda5 vfat users,rw,umask=000 0 0
/dev/sda6 /media/sda6 vfat users,rw,umask=000 0 0
/dev/sda7 /media/sda7 vfat users,rw,umask=000 0 0

also sudo mount /dev/scd0 /mnt/ is giving nothing

plz help

 

[praka123]

!!!try Upgrading the Kernel

this is a trivial effect.with kernel 2.6.19 onwards linux kernel merged old ide/pata drivers to libata.although the option for using old pata drivers available.the easiest option for you is to:when internet is ON,check synaptic manager,press reload to refresh repos.then search linux-image-* section for the latest kernel or upgrade ur current kernel if update is available.
the cdrom drive shud be using driver module "ide-cd".
Also post the output of "lsmod" here.look in /dev/ directory for any files as "hdx" where x is a-z.or post the output for below command:

ls -l /dev/ |grep cdrom

the workaround possibly will be to force ide-cd module to load at startup.for that u need to edit /etc/modules file as "gksudo gedit /etc/modules" and add "cdrom","ide-cd" without quotes in separate lines and save.exit.reboot and try.

 

[saurabh kakkar]

^^
thanks 4r the reply as u have said i have searched for linux-image-* though it

returned nothing but i have found an update pakage :
linux-image-generic
Generic Linux kernel image

should i install it ?

also

 lsmod

gives this :

Module Size Used by
binfmt_misc 12680 1
rfcomm 40856 0
l2cap 25728 5 rfcomm
bluetooth 55908 4 rfcomm,l2cap
ppdev 10116 0
i915 24448 2
drm 81044 3 i915
speedstep_lib 6148 0
cpufreq_conservative 8200 0
cpufreq_userspace 5408 0
cpufreq_stats 7360 0
cpufreq_ondemand 9228 0
cpufreq_powersave 2688 0
freq_table 5792 2 cpufreq_stats,cpufreq_ondemand
tc1100_wmi 8068 0
pcc_acpi 13184 0
sony_acpi 6284 0
dev_acpi 12292 0
dock 10268 0
sbs 15652 0
battery 10756 0
video 16388 0
i2c_ec 5888 1 sbs
button 8720 0
container 5248 0
asus_acpi 17308 0
backlight 7040 1 asus_acpi
ac 6020 0
nls_iso8859_1 5120 4
nls_cp437 6784 4
ipv6 268704 8
vfat 14208 4
fat 53916 1 vfat
lp 12452 0
snd_intel8x0 34204 2
snd_ac97_codec 98336 1 snd_intel8x0
ac97_bus 3200 1 snd_ac97_codec
snd_pcm_oss 44544 0
snd_mixer_oss 17408 1 snd_pcm_oss
snd_pcm 79876 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 4740 0
snd_seq_oss 32896 0
snd_seq_midi 9600 0
snd_rawmidi 25472 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi
snd_seq 52592 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 23684 2 snd_pcm,snd_seq
snd_seq_device 9100 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
parport_pc 36388 1
parport 36936 3 ppdev,lp,parport_pc
pcspkr 4224 0
snd 54020 14 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 8672 1 snd
psmouse 38920 0
i2c_i810 6276 0
i2c_algo_bit 8712 1 i2c_i810
i2c_core 22784 3 i2c_ec,i2c_i810,i2c_algo_bit
snd_page_alloc 10888 2 snd_intel8x0,snd_pcm
intel_agp 25116 1
serio_raw 7940 0
iTCO_wdt 11812 0
iTCO_vendor_support 4868 1 iTCO_wdt
shpchp 34324 0
pci_hotplug 32576 1 shpchp
agpgart 35400 3 drm,intel_agp
af_packet 23816 2
tsdev 8768 0
evdev 11008 4
ext3 133128 1
jbd 59816 1 ext3
mbcache 9604 1 ext3
sg 36252 0
sd_mod 23428 7
sr_mod 17060 0
cdrom 37664 1 sr_mod
generic 5124 0 [permanent]
ata_piix 15492 6
8139cp 25088 0
ata_generic 9092 0
libata 125720 2 ata_piix,ata_generic
scsi_mod 142348 4 sg,sd_mod,sr_mod,libata
8139too 27648 0
mii 6528 2 8139cp,8139too
ehci_hcd 34188 0
uhci_hcd 25360 0
usbcore 134280 3 ehci_hcd,uhci_hcd
thermal 14856 0
processor 31048 1 thermal
fan 5636 0
fbcon 42656 0
tileblit 3584 1 fbcon
font 9216 1 fbcon
bitblit 6912 1 fbcon
softcursor 3200 1 bitblit
vesafb 9220 0
capability 5896 0
commoncap 8192 1 capability

nd

ls -l /dev/ |grep cdrom

gives this :

lrwxrwxrwx 1 root root 4 2007-08-15 09:27 cdrom -> scd0
brw-rw---- 1 root cdrom 11, 0 2007-08-15 09:26 scd0
crw-rw---- 1 root cdrom 21, 0 2007-08-15 09:26 sg0

what should i do ?

 

[praka123]

ubuntu kernel uses new libata for pata drivers

As seen,ur kernel uses cdrom driver "sr_mod" driver.that is,this new driver from libata will emulate old ide/pata drives as scsi.they are claiming that this is for good etc etc and dma is enabled to the max.
But there is a set of old drivers which can/may give better support for ur ide dvd/cd drives.the solution is what i have written above get the latest upgrade for ur kernel via synaptic(in menu System>admin>synaptic) manager.just follow my above post.
also edit ur /etc/modules as below:

gksudo gedit /etc/modules

add at the top in separate lines as:

ide-cd 
cdrom

save and exit.
if possible do a "sudo depmod -ae"
just remember-upgrade ur kernel to the latest is the best solution.
the right kernel version for a pentium 32-bit system will be to get "2.6.20.16.28.1" version of linux-image-386.
remember u have to "reload" the synaptic manager to get latest updates data available.or in terminal u shud do "sudo apt-get update"
then go to synaptic manager to see upgrades and alternate kernels.

 

[saurabh kakkar]

Re: ubuntu kernel uses new libata for pata drivers

thanks buddy i will try (my net is not working at home ) and let u know

 

[saurabh kakkar]

Re: ubuntu kernel uses new libata for pata drivers

As seen,ur kernel uses cdrom driver "sr_mod" driver.that is,this new driver from libata will emulate old ide/pata drives as scsi.they are claiming that this is for good etc etc and dma is enabled to the max.
But there is a set of old drivers which can/may give better support for ur ide dvd/cd drives.the solution is what i have written above get the latest upgrade for ur kernel via synaptic(in menu System>admin>synaptic) manager.just follow my above post.
also edit ur /etc/modules as below:

gksudo gedit /etc/modules

add at the top in separate lines as:

ide-cd 
cdrom

save and exit.
if possible do a "sudo depmod -ae"
just remember-upgrade ur kernel to the latest is the best solution.
the right kernel version for a pentium 32-bit system will be to get "2.6.20.16.28.1" version of linux-image-386.
remember u have to "reload" the synaptic manager to get latest updates data available.or in terminal u shud do "sudo apt-get update"
then go to synaptic manager to see upgrades and alternate kernels.

thanks sir updating my kernel file solved my problem i was not able to

connect to internet so a late reply

thanks again