[Bug 85628] Re: random /dev/hdd accesses and system hang

[Andrew Starr-Bochicchio]

Hi  Laurentiu,

The 18 month support period for Edgy Eft 6.10 has reached it's end of
life. As a result, we are closing the linux-source-2.6.17 Edgy Eft
kernel task. However, Hardy Heron 8.04 was recently released. It would
be helpful if you could test the new release and verify if this is still
an issue - http://www.ubuntu.com/getubuntu/download . You should be able
to test your bug using the LiveCD. If the issue still exists, please add
the Hardy kernel "linux" task to the bug report. This can be done by
clicking on the "Also affects distribution" link in the Actions area on
left hand side of the bug report. Select "Ubuntu" as the Distribution
and type in "linux" for the Source Package Name. Thanks.


** Changed in: linux-source-2.6.17 (Ubuntu)
   Status: New => Won't Fix

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random /dev/hdd accesses and system hang
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[Bug 85628] Re: random /dev/hdd accesses and system hang

[Laurentiu Pancescu]

I noticed that if I remove the power and data cables from the CD writer,
and put them back in, the problem doesn't happen in the next hours or
days. I got exactly the same symptoms with the 2.6.18 kernel from Debian
Etch, even when running from the netinst CD (just busybox). I
permanently removed the CD writer a few weeks ago, and the problem
didn't appear since then.  Probably damaged hardware, not kernel bug.

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random /dev/hdd accesses and system hang
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[Bug 85628] Re: random /dev/hdd accesses and system hang

[Laurentiu Pancescu]

I forgot to mention: my kernel is tainted by kqemu, so I understand if
you don't want to look into it further.

I attached the logs you asked for, and the kernel log around the hang.
It happened on Feb 14th, around 8:10 (when I pushed the reset button).
I see some hdd messages in the log around the crash time.  When I tried
to use tail -f /var/log/messages during normal usage, when the CD writer
was accessed, there was nothing appearing in the logs. During such an
access, the CD writer led becomes on, and the system freezes for 1-2
seconds (music stops, mouse won't move during that time, keyboard
doesn't answer) - but only with 2.6.17-11.  I opened the case yesterday,
while running 2.6.17-10, and I can hear short clicks in the CD writer
(not a full motor spin), every now and then, but the CD writer led won't
go on, and the system doesn't seem to stop, like with 2.6.17-11.

** Attachment added: "System information and kernel logs"
   http://librarian.launchpad.net/6477851/logs.tar.gz

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[Bug 85628] Re: random /dev/hdd accesses and system hang

[Cristian Aravena Romero]

Thanks for taking the time to report this bug. Unfortunately we can't
fix it, because your description didn't include enough information.

Please include the following additional information, if you have not already 
done so (please pay attention to lspci's additional options), as required by 
the Ubuntu Kernel Team:
1. Please include the output of the command "uname -a" in your next response. 
It should be one, long line of text which includes the exact kernel version 
you're running, as well as the CPU architecture.
2. Please run the command "dmesg > dmesg.log" and attach the resulting file 
"dmesg.log" to this bug report.
3. Please run the command "lspci -vvnn > lspci-vvnn.log" and attach the 
resulting file "lspci-vvnn.log" to this bug report.

For your reference, the full description of procedures for kernel-
related bug reports is available here:
 Thanks!

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random /dev/hdd accesses and system hang
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