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[solved]dvd drive not recognized by k3b
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deathraccoon
Tux's lil' helper
Tux's lil' helper


Joined: 27 Jan 2015
Posts: 90

PostPosted: Tue Feb 03, 2015 12:55 am    Post subject: [solved]dvd drive not recognized by k3b Reply with quote

my dvdr drive is not being recognized. when I start k3b, I get this:

No optical drive found.
K3b did not find any optical device in your system.

this is a new issue.

here is my fstab and dmesg

Code:
/dev/sda1               /boot           ext2            defaults,noatime                1 2
/dev/mapper/tux-lvroot  /               ext4            defaults,noatime                0 0
/dev/mapper/tux-lvhome  /home           ext4            defaults,noatime                0 1
/dev/mapper/tux-lvvar   /var            ext4            defaults,noatime                0 0
/dev/mapper/tux-lvswap  none            swap            sw                              0 0
#/dev/mapper/tux-lvtmp  /tmp            tmpfs           noatime,size=4G                 0 0
/dev/sr0                /mnt/cdrom      auto            user,exec,rw                    0 0
none                    /dev/shm        tmpfs           noatime,defaults,size=6G        0 0
tmpfs                   /tmp            tmpfs           noatime,defaults,size=8G        0 0


and this:
Code:
sudo mount /dev/sr0 /mnt/cdrom
mount: /dev/sr0 is write-protected, mounting read-only
mount: /dev/sr0: can't read superblock


Code:
dmesg | grep sr0
[    3.871285] sr 0:0:0:0: [sr0] scsi3-mmc drive: 47x/125x writer dvd-ram cd/rw xa/form2 cdda tray
[    3.871412] sr 0:0:0:0: Attached scsi CD-ROM sr0
[   54.369048] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 4, size 2048)
[   54.369051] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 32, size 2048)
[   54.396999] sr 0:0:0:0: [sr0] 
[   54.397001] sr 0:0:0:0: [sr0] 
[   54.397004] sr 0:0:0:0: [sr0] 
[   54.397006] sr 0:0:0:0: [sr0] CDB:
[   54.397010] end_request: I/O error, dev sr0, sector 0
[   54.397023] EXT3-fs (sr0): error: unable to read superblock
[   54.417015] sr 0:0:0:0: [sr0] 
[   54.417018] sr 0:0:0:0: [sr0] 
[   54.417020] sr 0:0:0:0: [sr0] 
[   54.417021] sr 0:0:0:0: [sr0] CDB:
[   54.417025] end_request: I/O error, dev sr0, sector 0
[   54.417037] EXT2-fs (sr0): error: unable to read superblock
[   54.437036] sr 0:0:0:0: [sr0] 
[   54.437039] sr 0:0:0:0: [sr0] 
[   54.437041] sr 0:0:0:0: [sr0] 
[   54.437043] sr 0:0:0:0: [sr0] CDB:
[   54.437046] end_request: I/O error, dev sr0, sector 0
[   54.437059] EXT4-fs (sr0): unable to read superblock
[   54.457054] sr 0:0:0:0: [sr0] 
[   54.457057] sr 0:0:0:0: [sr0] 
[   54.457059] sr 0:0:0:0: [sr0] 
[   54.457060] sr 0:0:0:0: [sr0] CDB:
[   54.457064] end_request: I/O error, dev sr0, sector 0
[  511.247901] sr 0:0:0:0: [sr0] 
[  511.247904] sr 0:0:0:0: [sr0] 
[  511.247906] sr 0:0:0:0: [sr0] 
[  511.247908] sr 0:0:0:0: [sr0] CDB:
[  511.247912] end_request: I/O error, dev sr0, sector 16
[  511.247929] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 2, size 4096)
[  511.267903] sr 0:0:0:0: [sr0] 
[  511.267906] sr 0:0:0:0: [sr0] 
[  511.267908] sr 0:0:0:0: [sr0] 
[  511.267910] sr 0:0:0:0: [sr0] CDB:
[  511.267913] end_request: I/O error, dev sr0, sector 128
[  511.267929] REISERFS warning (device sr0): sh-2006 read_super_block: bread failed (dev sr0, block 16, size 4096)
[  511.287936] sr 0:0:0:0: [sr0] 
[  511.287938] sr 0:0:0:0: [sr0] 
[  511.287940] sr 0:0:0:0: [sr0] 
[  511.287942] sr 0:0:0:0: [sr0] CDB:
[  511.287945] end_request: I/O error, dev sr0, sector 0
[  511.287952] EXT3-fs (sr0): error: unable to read superblock
[  511.307962] sr 0:0:0:0: [sr0] 
[  511.307964] sr 0:0:0:0: [sr0] 
[  511.307967] sr 0:0:0:0: [sr0] 
[  511.307968] sr 0:0:0:0: [sr0] CDB:
[  511.307972] end_request: I/O error, dev sr0, sector 0
[  511.307979] EXT2-fs (sr0): error: unable to read superblock
[  511.327974] sr 0:0:0:0: [sr0] 
[  511.327977] sr 0:0:0:0: [sr0] 
[  511.327979] sr 0:0:0:0: [sr0] 
[  511.327981] sr 0:0:0:0: [sr0] CDB:
[  511.327984] end_request: I/O error, dev sr0, sector 0
[  511.327992] EXT4-fs (sr0): unable to read superblock
[  511.347985] sr 0:0:0:0: [sr0] 
[  511.347988] sr 0:0:0:0: [sr0] 
[  511.347990] sr 0:0:0:0: [sr0] 
[  511.347992] sr 0:0:0:0: [sr0] CDB:
[  511.347996] end_request: I/O error, dev sr0, sector 0


Last edited by deathraccoon on Fri Feb 06, 2015 6:13 am; edited 1 time in total
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DawgG
l33t
l33t


Joined: 17 Sep 2003
Posts: 814

PostPosted: Wed Feb 04, 2015 1:33 pm    Post subject: Reply with quote

i have somtimes experienced this issue when starting k3b in a non-kde de. it helped (re)starting dbus and hal manually via their initscripts.

Quote:
[ 54.417021] sr 0:0:0:0: [sr0] CDB:
[ 54.417025] end_request: I/O error, dev sr0, sector 0
[ 54.417037] EXT2-fs (sr0): error: unable to read superblock

are you trying to mount an empty disc?

GOOD LUCK!
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deathraccoon
Tux's lil' helper
Tux's lil' helper


Joined: 27 Jan 2015
Posts: 90

PostPosted: Fri Feb 06, 2015 6:12 am    Post subject: Reply with quote

booting 3.17.7 with default genkenel settings did the trick. thank you.
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