On Mon, 2014-09-22 at 08:43 +0100, Ian Malone wrote: > On 22 September 2014 03:37, Chris Murphy <li...@colorremedies.com> wrote: > > > > On Sep 19, 2014, at 3:08 PM, David A. De Graaf <d...@datix.us> wrote: > > > >>> > >>> On Fri, Sep 19, 2014 at 11:51 AM, Chris Murphy <li...@colorremedies.com> > >>> wrote: > >>>> > >>>> On Sep 19, 2014, at 10:18 AM, David A. De Graaf <d...@datix.us> wrote: > >>>>> > >>>>> When the system freezes, if X is lit (not screen-saved) the LCD > >>>>> monitor looks as if it had been hit a sharp blow on the right edge so > >>>>> that all the pixels have been shaken loose. > >>>> > >>>> Sounds like a bad motherboard. It's managing to corrupt memory in such a > >>>> way that you're getting video artifacts. > >>>> > >> Chris, I agree. Which is why the first thing I tried was to buy a > >> new different motherboard (to replace the almost new motherboard). > >> The two mobo's have onboard video that appears to be different, yet the > >> display during freeze is indistinguishable. > > > > OK but when you say different motherboard, how different? Same make and > > model? It could still be from the same batch; either the logic board > > itself, or the components. > > > > From David De Graaf's original email: > "Originally, I had used a Gigabyte 78MT-USB3 mobo, but replaced it with > an ASRock 960M/U3S3 FX mobo in a futile attempt to fix the problem." > > If I had to take a guess, and with PSU issues ruled out (I'm assuming > "I did also change the power supply but forgot to list that with all > the other things that didn't work." means "to a larger capacity > one".), the other common factor is the hard drive. Possibly it's doing > something that SATA3 ignores or handles better, either because of > different controller chips or some difference in the driver software. > Any log errors recorded when it crashes? Might be one for a kernel > bug. Increasing frequency of the problem could indicate something in > the drive electronics that's failing. Did the OP try a different SATA cable? If replaqcing the power supply nor the Mobo solves the issue, the SATA cable may be the issue....
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