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Description: Zorin OS 12.1
Release: 12
Environment: Ubuntu 16.04 LTS - amd64
Severity: Critical
Affected versions:
linux-image-4.8.0-49-generic:
Installed: (None)
Candidate: 4.8.0-49.52~16.04.1
Version table:
4.8.0-49.52~16.04.1 500
500 http://it.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
500 http://security.ubuntu.com/ubuntu xenial-security/main amd64
Packages
100 /var/lib/dpkg/status
linux-image-4.8.0-51-generic:
Installed: 4.8.0-51.54~16.04.1
Candidate: 4.8.0-51.54~16.04.1
Version table:
*** 4.8.0-51.54~16.04.1 500
500 http://it.archive.ubuntu.com/ubuntu xenial-updates/main amd64
Packages
100 /var/lib/dpkg/status
Hardware information: Dell XPS 15 (9550), lshw attached as hardware.info.txt.
Description:
At a random time when normally using the PC, the disk is rendered unavailable
and any commands run or file accessed has a read error. Poweroff and reboot
hang because of unavailable disk. System is completely unusable and needs a
forceful restart (pushing the power on button).
Misbehaviour happens 100% of the sessions, but with random time to appear (10
minutes to 2 hours after the boot). NOTE: Log harvesting is quite impossible
because the disk is rendered unavailable also to system process.
Steps to reproduce:
1) Boot with affected kernel and work normally
1) Wait between 10 minutes and 2 hours for the disk to be rendered unavailable
2) Power cycle the PC using the power button
Workaround:
There are no strict workaround known for the kernel versions affected; once
misbehaviour has happened, the only thing that makes the PC usable again is to
boot with previous kernel version (e.g. linux-image-4.8.0-46-generic included
and lower works as expected).
Expected result:
Kernel does not render disk unavailable and continuously works.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Filesystem could not be read/written anymore
https://bugs.launchpad.net/bugs/1688213
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