Messages in this thread | | | Subject | Suspend to RAM regression retraced | From | Jean-Marc Valin <> | Date | Thu, 02 Mar 2006 19:58:45 +1100 |
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Hi,
A while ago I reported a regression (http://lkml.org/lkml/2005/9/21/290) in suspend to RAM that happened with kernel 2.6.12 on my Dell D600 laptop. After several months of testing (this is my work machine and the bug takes time to reproduce), I have finally narrowed it down. It seems like to problem was introduced between 2.6.12-rc5 and 2.6.12-rc6.
Basically, what happens is that with 2.6.12-rc6, 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.
Can someone have a look at what could cause the problem and fix it? I can provide more information if needed. BTW, I'm not on the list so please CC to me.
Thanks,
Jean-Marc
P.S. Machine setup is: Ubuntu 5.10 (but problem also observed on 5.04 and old Debian unstable) Dell Latitude D600 (Bios rev. A14) Pentium-M 1.6 GHz / 1 GB RAM ATI Technologies, Inc. Radeon Mobility 9000 M9 (R250 Lf)
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