http://bugzilla.kernel.org/show_bug.cgi?id=6166
Summary: Suspend to RAM regression (failure to resume)
Kernel Version: 2.6.12 and up
Status: NEW
Severity: normal
Owner: [EMAIL PROTECTED]
Submitter: [EMAIL PROTECTED]
Most recent kernel where this bug did not occur:
The bug was introduced in kernel 2.6.12 and occurs on later versions too (tested
2.6.13 and 2.6.14). After doing further testing, it seems like the regression
happened between 2.6.12-rc5 and 2.6.12-rc6
Distribution:
Ubuntu 5.10 (Breezy), although it also happened on Ubuntu 5.04 and Debian
stable.
Hardware Environment:
Dell Latitude D600 (Bios rev. A14)
Pentium-M 1.6 GHz / 1 GB RAM
ATI Technologies, Inc. Radeon Mobility 9000 M9 (R250 Lf)
Software Environment:
Default Ubuntu 5.10 software installed, except for stock kernel.
Problem Description:
With kernel 2.6.12-rc6 and later, my machine *sometimes* doesn't resume when I
suspend it. This happens especially when it has been running for a while. It
almost always works when I just rebooted, or if I just successfully resumed. So
it behaves like "something" gets randomly corrupted, at which point the machine
still works, but will not resume if I suspend it. Also, I've observed the same
behaviour with and without preemption enabled.
Steps to reproduce:
It does not reproduce reliably. In general, the longer the machine has been up,
the most likely the bug is to happen. After 7-10 days of active uptime, resume
almost never works. After a few hours, it almost always works.
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