[Discuss] Linux on Lenovo P70 -- data corruption

[Kent Borg]

On 09/04/2017 04:08 PM, Robert Krawitz wrote:
> On Mon, 4 Sep 2017 15:56:06 -0400, Kent Borg wrote:
>> On 09/04/2017 02:10 PM, Robert Krawitz wrote:
>>> On Mon, 4 Sep 2017 13:59:48 -0400, Frank DiPrete wrote:
>>>> What us the NIC in the laptop ?
>>>> I've had this problem before using the open source driver for a network
>>>> adapter.
>>>> (trying to remember which one)
>>> But this appears to also happen over the loopback interface.
>> If you can reliably get it to mess up, see what reliably never messes up, squeeze between the two.
> I reproduced the problem under Windows, with exactly the same
> symptoms.  But it was considerably harder, perhaps because ssh/scp
> under Cygwin is a lot slower than it is on Linux, and it did appear
> that the rate of data transfer affected how frequently it failed.
>
> I did it by copying a ~36 GB file repeatedly from a known good Linux
> host to the laptop, while running a load in the background (on Linux,
> multiple copies of glxgears with the option to turn off sync, on
> Windows, by running prime95 along with an OpenGL demo in the
> background).  It took me about 5 tries on Windows to finally get a
> failure, but I did, with exactly the same pattern as under Linux.

Congratulations! Sounds like a hardware problem. (Unless it is a problem 
in scp!)

-kb