Thank you for taking the time to report this bug and help to improve
Ubuntu.
This is not a bug in acpi-support, but a fundamental detail of how
suspend works on USB. Because the USB is powered down in S3 mode, when
the kernel comes up again the USB is rescanned and the drive comes up
with a completely new ID - with the original pointers of the filesystem
still pointing to a structure which is no longer present.
The correct solution here is that we should disallow suspend to RAM at
all when the root partition (and possibly any of several key
filesystems) is on USB. Reassigning to pm-utils.
** Changed in: pm-utils (Ubuntu)
Sourcepackagename: acpi-support => pm-utils
Importance: High => Undecided
Status: New => Confirmed
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Apple MacBook running Hardy on USB disk resumes from standby with corrupted
file system
https://bugs.launchpad.net/bugs/207947
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