On Tue, Feb 14, 2012 at 11:43 AM, John Watlington <[email protected]> wrote:
> > 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 ? > All three ports act on each machine act consistently. All 10 USB sticks act consistently. > > 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... > I have spare machines, would you be interested in my sending these back to you for investigation? I can mail them down, my cost. KG > 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 > > [email protected] > > http://lists.laptop.org/listinfo/devel > >
_______________________________________________ Devel mailing list [email protected] http://lists.laptop.org/listinfo/devel
