Bug#661920: linux-image-2.6.32-5-amd64: mounting some CDs lead to "Unhandled sense code"s which make autodetection fail
Package: linux-2.6
Version: 2.6.32-41
Severity: normal
When using some CDs there are "Unhandled sense code" messges for
the device. This leads to Plasma's autodetection of the device to fail
and does not display the device.
There is a very good chance the CD can still be mounted manually.
I am opening this report, because in #583949 Ben Hutchings recommend it.
Also because I believe this is related to software somehow and not gone.
It probably will take some effort by the Debian, kernel and Free Software
communities to get a closer grip on this defect.
Any hints towards further analysis are highly appreciated!
Bernhard
Details:
I have two drives available for the testing on an amd machine,
running an amd kernel with 32bit userspace.
One drive is build in, the other is usb.
Both show the symptoms.
If I have a CD that is affected, it will have problems in both drives.
Booting into windows XP, there is no issue.
Running grml96_2011.12.iso from an usb stick there is no
issue, it has linux-image-3.1.0-3-grml-amd64, but has not autodetection anyway.
The symptoms:
Putting the CD in the drive, it will take some time, more than usual
a few seconds more. Then the syslog shows a number of blocks like:
sr 6:0:0:0: [sr1] Unhandled sense code
sr 6:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sr 6:0:0:0: [sr1] Sense Key : Medium Error [current]
sr 6:0:0:0: [sr1] Add. Sense: L-EC uncorrectable error
sr 6:0:0:0: [sr1] CDB: Read(10): 28 00 00 02 55 a0 00 00 02 00 00 00
end_request: I/O error, dev sr1, sector 611968
Buffer I/O error on device sr1, logical block 76496
sr 6:0:0:0: [sr1] Unhandled sense code
sr 6:0:0:0: [sr1] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
sr 6:0:0:0: [sr1] Sense Key : Medium Error [current]
sr 6:0:0:0: [sr1] Add. Sense: L-EC uncorrectable error
sr 6:0:0:0: [sr1] CDB: Read(10): 28 00 00 02 55 a0 00 00 02 00 00 00
end_request: I/O error, dev sr1, sector 611968
Buffer I/O error on device sr1, logical block 76496
Maybe 3 or more. No device appears in the Plasma gui.
A manual "mount /mnt/cdrom" usually succeeds.
Expected would be that there are no messages and the device is coming up
(fast) in the gui and can be mounted from there.
Further details: I had problems with burned CDs from both drives.
However it is also possible to burn CDs which are accepted fine
(which I did today twice).
It is unclear which CDs have this issue.
And it is strange that the data can still be read manually
and read by windows xp.
I've tried linux-image-3.2.0-0.bpo.1-amd64
(3.2.4-1~bpo60+1 Debian Backports:squeeze-backports)
which did not help.
Given the number of issues that are related to this,
it seems less likely that I really got unlucky with a number of suboptimal
CD media. Even if so, there still is an issue as windows XP and
manual mount read the CD fine.
Infos about the two drives:
cdrdao drive-info --device /dev/sr0
Cdrdao version 1.2.3 - (C) Andreas Mueller <andreas@daneb.de>
/dev/sr0: TSSTcorp CDDVDW SH-S203D Rev: SB00
Using driver: Generic SCSI-3/MMC - Version 2.0 (options 0x0000)
Maximum reading speed: 8468 kB/s
Current reading speed: 8468 kB/s
Maximum writing speed: 8468 kB/s
Current writing speed: 8468 kB/s
BurnProof supported: yes
JustLink supported: yes
JustSpeed supported: no
cdrdao drive-info --device /dev/sr1
Cdrdao version 1.2.3 - (C) Andreas Mueller <andreas@daneb.de>
/dev/sr1: TSSTcorp CDDVDW SE-S204N Rev: TS00
Using driver: Generic SCSI-3/MMC - Version 2.0 (options 0x0000)
Maximum reading speed: 8468 kB/s
Current reading speed: 8468 kB/s
Maximum writing speed: 8468 kB/s
Current writing speed: 8468 kB/s
BurnProof supported: yes
JustLink supported: yes
JustSpeed supported: no
Here are related issue reports:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=583949
2.6.32-3-amd64 can't read DVDs/CDs (sometimes)
From: Ben Hutchings <ben@decadent.org.uk>
If anyone is still having trouble reading CDs or DVDs in the current
kernel version in stable (2.6.32-35) or unstable (3.0.0-1), please open
a *new* bug report.
There is a new one:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=641288
(linux-image-2.6.32-5-686: Can not read appendable cdroms/dvds)
Though it is unsure if this is the same issue as appendable CDs are
addressed in particular.
http://forum.kde.org/viewtopic.php?f=19&t=91402#
CD Dvd drive not working in KDE 4.5.x
The solution here seems to have been to disable some sort of autodetection.
-- Package-specific info:
** Version:
Linux version 2.6.32-5-amd64 (Debian 2.6.32-41) (ben@decadent.org.uk) (gcc version 4.3.5 (Debian 4.3.5-4) ) #1 SMP Mon Jan 16 17:15:00 UTC 2012
** Model information
sys_vendor: MICRO-STAR INTERANTIONAL CO.,LTD
product_name: MS-7368
product_version: 1.0
chassis_vendor: To Be Filled By O.E.M.
chassis_version: To Be Filled By O.E.M.
bios_vendor: American Megatrends Inc.
bios_version: V1.5
board_vendor: MICRO-STAR INTERANTIONAL CO.,LTD
board_name: MS-7368
board_version: 1.0
** USB devices:
Bus 006 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 004 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 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 004: ID 13fd:2040 Initio Corporation
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages linux-image-2.6.32-5-amd64 depends on:
ii debconf [debconf-2.0] 1.5.36.1 Debian configuration management sy
ii initramfs-tools [linux-init 0.99~bpo60+1 tools for generating an initramfs
ii linux-base 3.4~bpo60+1 Linux image base package
ii module-init-tools 3.12-2+b1 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.32-5-amd64 recommends:
ii firmware-linux-free 2.6.32-41 Binary firmware for various driver
ii libc6-i686 2.11.3-2 Embedded GNU C Library: Shared lib
Versions of packages linux-image-2.6.32-5-amd64 suggests:
ii grub 0.97-64 GRand Unified Bootloader (dummy pa
Versions of packages linux-image-2.6.32-5-amd64 is related to:
ii firmware-linux 0.28+squeeze1 Binary firmware for various driver
ii firmware-linux-nonfree 0.28+squeeze1 Binary firmware for various driver
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