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Old 10-21-2010, 02:07 PM   #1
Snigger
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Question CD/DVD mount problem in 10.04 (Lucid Lynx)


Hi
I'm using Ubuntu 10.04 (lucid lynx).
It was OK after some of kernel updates (I guess):
It doesn't auto mount CD/DVD when I insert them.
When I insert CD/DVD system writes this in "syslog":
Code:
Oct 13 23:08:51 ariyan-laptop pulseaudio[1759]: ratelimit.c: 87 events suppressed
Oct 13 23:09:01 ariyan-laptop CRON[11847]: (root) CMD (  [ -x  /usr/lib/php5/maxlifetime ] && [ -d /var/lib/php5 ] &&  find /var/lib/php5/ -type f -cmin +$(/usr/lib/php5/maxlifetime) -print0 |  xargs -n 200 -r -0 rm)
Oct 13 23:09:51 ariyan-laptop pulseaudio[1759]: ratelimit.c: 84 events suppressed
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382150] sr 1:0:0:0: [sr0] Unhandled sense code
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382155] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382161] sr 1:0:0:0: [sr0] Sense Key : Medium Error [current] 
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382168] sr 1:0:0:0: [sr0] Add. Sense: Cannot read medium - unknown format
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382177] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 00 00 00 02 00
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382193] end_request: I/O error, dev sr0, sector 0
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382199] __ratelimit: 129 callbacks suppressed
Oct 13 23:11:56 ariyan-laptop kernel: [39468.382203] Buffer I/O error on device sr0, logical block 0
And when I try to mount it manually it writes:
Code:
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076178] sr 1:0:0:0: [sr0] Unhandled sense code
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076183] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076189] sr 1:0:0:0: [sr0] Sense Key : Medium Error [current] 
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076196] sr 1:0:0:0: [sr0] Add. Sense: Cannot read medium - unknown format
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076205] sr 1:0:0:0: [sr0] CDB: Read(10): 28 00 00 00 00 10 00 00 01 00
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076221] end_request: I/O error, dev sr0, sector 64
Oct 13 23:07:27 ariyan-laptop kernel: [39200.076372] isofs_fill_super: bread failed, dev=sr0, iso_blknum=16, block=16
when I reboot system it works correctly again!
I made ISO images of some of DVDs in a windows box and transfered them in my ubuntu and tried to mount them and there were no problem with ISO images!! the problem is with the physical CD/DVD !
What's on?
How can I fix it?
 
Old 10-21-2010, 03:20 PM   #2
Stephannn
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Location: San Francisco, CA
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You might want to poke around looking for a firmware update for your DVD drive and see if that helps?
 
Old 10-22-2010, 06:23 AM   #3
Snigger
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Registered: Jul 2007
Distribution: Ubuntu Lucid Lynx
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Today something strange happened!
I tested 7 DVDs and 2 of them had this problem and the others was OK! I also tested 3 VCDs and all was OK!
Do you still think it's firmware problem?
How can I update firmware?
 
Old 10-22-2010, 10:36 AM   #4
Stephannn
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Registered: Oct 2010
Location: San Francisco, CA
Distribution: Snow Leopard, Ubuntu, RedHat
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Nope, sounds like you're using discs that weren't made well. Stick to reputable DVD medium, and do a 'disc verify' for each disc you burn (especially installation discs, since having one go bad can be a complete disaster.)

A good way to test would be to try inserting a few commercially made DVDs, since they use a different process and tend not to have media errors.

Glad it's working for you!
 
Old 10-23-2010, 01:32 PM   #5
Snigger
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Registered: Jul 2007
Distribution: Ubuntu Lucid Lynx
Posts: 55

Original Poster
Rep: Reputation: 15
Hi and thanks for your attention.
All of those DVDs was commercial (Both those that had problem and those didn't had pronlem!)! the problem is not with my own written discs!
All of them are written by one company!
They mount in windows without problem!
I cant verify them because they are not even detected!
I attached the screenshots of Disk Utility with both correct and incorrect DVDs!
I also found this Bug report that has same errors as my problem but there are no solution there:
https://bugs.launchpad.net/ubuntu/+s...ux/+bug/405544
Attached Images
File Type: png Correct.png (95.5 KB, 3 views)
File Type: png Incorrect.png (81.9 KB, 3 views)
 
  


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