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    SubjectRe: Corrupted files after suspend to disk
    On Mon, Mar 12, 2012 at 02:24:00PM +0100, Andreas Hartmann wrote:

    > >>>>> This is happening to me as well. Something like 1 resume out of 5 goes
    > >>>>> wrong this very same way.
    > >>>>>
    > >>>>> This is thinkpad x200s.
    > >>>>>
    > >>>>> All the userspace is segfaulting all over the place (most frequently in
    > >>>>> libselinux for some reason).
    > >>>>>
    > >>>>> I am not able to verify the 'drop_caches' theory, as I can't invoke a
    > >>>>> single command that wouldn't crash.
    > >>>>
    > >>>> The question is how should we proceed?
    > >>>> I've reported this issue one year (!!!) ago.
    > >>>
    > >>> Hmm, 3.3-rcX seems to be the first version when it started to happen to
    > >>> me. I take it that you have seen this also with 3.2? 3.1?
    > >>
    > >> Quote from my very first email:
    > >> "I'm facing a very strange problem on my netbook (Lenovo Ideapad S10)
    > >> running Linux 2.6.37.4."
    > >
    > > So we both seem to have Lenovos at least. I thus wanted to verify whether
    > > the problem will trigger with thinkpad_acpi removed, but it oopsed while
    > > rmmoding :) I will start looking into this right away.
    > >
    > > Is your system using thinkpad_acpi as well?
    >
    > I dont't think, that it is lenovo related as I'm having a MSI machine.
    >
    > https://bugzilla.novell.com/show_bug.cgi?id=732908
    >
    > Following the link, you are able to compare the used chips - maybe there
    > are some equal components?

    This looks like the i915 corruption problem mentioned in a few other threads.

    if you compare the hexdump of the good/bad files, you find that the corruption
    happens in 8x 4 byte writes of either 0x00000000 or 0x00aaaaaa.

    KeithP clued me in last week that that looks like an ARGB pixel quad, so these
    writes are likely 8 pixel strips.

    Dave


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