[Bug 32911] [RADEON:KMS:MEMCORRUPTION] random memory corruption if using more than 4GiB of RAM on Core i7/P55

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Sat Mar 19 02:56:02 PDT 2011


Siarhei Siamashka <siarhei.siamashka at gmail.com> changed:

           What    |Removed                     |Added
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID

--- Comment #5 from Siarhei Siamashka <siarhei.siamashka at gmail.com> 2011-03-19 02:56:03 PDT ---
After all, it looks like it is a hardware problem on my side. Experimenting
with 'memmap' option simulating 4GiB setup precisely does not help when all
8GiB are installed. Also reducing RAM speed from DDR3-1333 to DDR3-1066 or
DDR3-800 makes the problem significantly harder to reproduce, but does not
eliminate it completely. And looking around in various hardware forums,
reliability with all four DIMM modules installed seems to be a rather common

Appears that llvmpipe is just a very good memory checker, putting a lot of
stress on all CPU cores and memory controller, exposing problems which don't
happen in other use cases.

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