SODIMM DDR3 Synchronous 1600 MHz (0.6 ns) - vendor: 8502 - *BAD*gran_size,

Nicholas Skaggs nicholas.skaggs at canonical.com
Mon Apr 15 16:03:27 UTC 2013


Vasudevan, definitely something funny with your RAM (or POSSIBLY a bug 
with memtest). Do you notice anything funny while running the system? In 
general after getting errors like that I would reseat my memory sticks 
and see if they go away :-) Running memtest of course is also a good idea.


Nicholas

On 04/15/2013 11:57 AM, Vasudevan Kottilil wrote:
> Seeing this on both quantal and raring beta2 on a brand new laptop 
> from system76 (gazelle pro) after my previous desktop died mysteriously.
> While booting it reports these messages
>
> [    0.000000] *BAD*gran_size: 64K     chunk_size: 16M num_reg: 10  
>     lose cover RAM: -8M
> [    0.000000] *BAD*gran_size: 64K     chunk_size: 32M num_reg: 10  
>     lose cover RAM: -8M
> [    0.000000] *BAD*gran_size: 64K     chunk_size: 64M num_reg: 10  
>     lose cover RAM: -8M
> [    0.000000]  gran_size: 64K     chunk_size: 128M     num_reg: 10  
>     lose cover RAM: 0G
> [    0.000000]  gran_size: 64K     chunk_size: 256M     num_reg: 10  
>     lose cover RAM: 0G
> [    0.000000]  gran_size: 64K     chunk_size: 512M     num_reg: 10  
>     lose cover RAM: 0G
> [    0.000000]  gran_size: 64K     chunk_size: 1G     num_reg: 10      
> lose cover RAM: 0G
> [    0.000000] *BAD*gran_size: 64K     chunk_size: 2G num_reg: 10      
> lose cover RAM: -1G
> [    0.000000]
>
> Do these indicate a h/w defect? Before installing raring beta2, 
> memtest reported lot of errors and I killed it after the count went 
> past a million
> After installing raring iso, memtest ran over night with out errors 
> (shows 'pass'). Does installing new version of iso upgrade the memtest 
> version also?
> Vasudevan Kottilil
>

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