Turns out my mail to on Wednesday night was a little optimistic. On Thursday, we dug deeper into a self-test failure that we had all noticed but it hadn't been a high priority. It turns out that a series of errors were causing the lid switch in most XO-1.5 (B2-C1) laptops to "flap". We had left old debug code left in the EC and zero ohm resistors populated so that both the EC and the VX855 Southbridge were connected to the lid switch. While a debouncer in the Linux lid switch detection was preventing this from being noticed, units do see an abnormally high rate of lid switch interrupts! OFW, on the other hand, frequently though the lid had been open and closed. This will be fixed by the next firmware release.
The build of the remaining units started late on Thurs., and didn't finish until Friday morning. When Quanta tried to download the Linux image, about two-thirds of the laptops couldn't talk to their WLAN card. (Which OFW reported as a MAC address of all FFs.) We are still verifying, but what I believe happened is that the modifications Gary and I made Wed. (and he applied to all machines) to fix a WLAN 3.3V leakage problem exposed a power sequencing issue with the WLAN card. This card was specially designed to use multiple supply voltages from the MB. This saves power, but we are the first to do this with the 88W8686. Gary has tested an ECO on three boards and it worked, but conclusive test are still needed. If the WLAN card is at all warm, the existing power sequencing works so this problem is only seen on first boot when the unit is cold. The C1 laptops will hopefully be shipped out to 1CC on Monday or Tuesday of this week. Cheers, wad _______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
