Hi Jan, Jan Ceuleers wrote: > On 22/09/10 23:37, Soren Kristensen wrote: >> Our experience is that 9 out of 10 times issues with stability is either >> problems with the power supply or with the software, especially Linux as >> it seems to have taken long time for a stable VT6105M Linux driver to >> show up.... >> >> If it's one of the very few instances where it's a hardware issue just >> contact [email protected] to request service, if under warranty it will be >> replaced or repaired at no charge. But try another power supply first, >> and if running Linux, ensure you have the stable drivers. > > I have similar problems with my 5501 crashing very frequently. I've > tried two separate power supplies without effect. > > Some questions to everyone out there: > > - Does anyone know as from which kernel version the VT6105M (aka > via-rhine) driver is believed to be stable? I've been looking through > the git history of this file but can't find anything recent that looks > like it might explain crashes.
I'm sorry that I can't track software that much, busy designing new hardware.... But didn't somebody recently post about fixing the Linux VIA driver ? > - One data point: when my machine crashes there is no backtrace. So it's > a hard lock-up. A couple of question/suggestions: 1) Does it crash without wifi activity ? 2) If so, have you tried without any wifi drivers loaded but the hardware still in ? The ultimate test to figure out if it's software or hardware is to try with a completely different operating system.... > - When I remove the mini-PCI wifi card the machine becomes rock-solid. > I've tried with two different wifi cards, one needing the ath5k driver, > the other needing ath9k. Those are the only card types I have, but the > machine crashes with either. So this leads me to the following questions: > > - Could this be an EMI problem? Would it make sense for me to rig up > some shielding between the mini-PCI card and the two Ethernet > controllers that sit immediately underneath? Doubt it.... > - Could this be a decoupling issue? Does anyone have suggestions as to > capacitors to add or change? Doubt that too, the 3.3V power supply have plenty of extra power, at least 3A, the the main 1000uF low ESR capacitor sits just behind the Mini-PCI slot.... Best Regards, Soren Kristensen CEO & Chief Engineer Soekris Engineering, Inc. _______________________________________________ Soekris-tech mailing list [email protected] http://lists.soekris.com/mailman/listinfo/soekris-tech
