Sounds like a signal integrity issue is forcing the USB to run at 10 Mbps on those two laptops. Have you tried another USB stick ? Or different ports on the malfunctioning laptops ?
There is little on the motherboard which can affect these ports --- they run from the connector to the Via companion chip (VX855). Perhaps this is due to ESD damage of the VX855 itself... Regards, wad On Feb 14, 2012, at 8:47 AM, Kevin Gordon wrote: > No, this email is not about my generally weird behaviour, it's about a couple > of my new XO 1.5's :-) > > I have 2 x XO 1.5's that seem to have a very slow USB transfer rate; like, I > mean glacial. > > I use the same USB build sticks to build many XO 1.5's, but on these > particular two it takes close to an hour to do a refresh, or sometimes just > stops in the middle of the refresh block colour animation - regardless of > the stick used. I have many times verified that the same sticks refresh in > normal time, on about 8 other 1.5s. All the XO's are currently at the > default 883 build with q3b11 when doing this refresh test. I then suspected > maybe main memory, but then a refresh from the SD card slots on these same > two suspect machines is lightning fast, (in fact way faster than I've ever > seen using USB), and the machine seems to be successfully built. However, > I've also then done just a USB copy from another stick down to the file > system, and it too is really, really slow, if and when when it finishes. > > The standard short-cut key at boot-time diagnostics show no errors. > > Any hints? > > Thanks > > KG > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel _______________________________________________ Devel mailing list Devel@lists.laptop.org http://lists.laptop.org/listinfo/devel
