My FreeRunner’s USB port still works for power, but not data?
brolin at brolin.be
Wed Mar 3 20:19:35 CET 2010
Brolin Empey wrote:
>Now my FreeRunner’s USB port works for power, so I can
> still charge the battery, but not for communications, so I think a
> solder connection must have come undone. I need to try disassembling my
> FreeRunner to check the connections for the USB connector so I can ask
> someone at work to fix (resolder) the connection, but I have not yet
> done so. It must be a hardware problem because QtMoko can still charge,
> but nothing happens when I connect USB devices to my FreeRunner: no
> kernel modules are automatically loaded, there are no kernel messages.
> Manually loading the kernel modules (e.g., dm9601 for my USB→Ethernet
> adapter) for the USB device does not help. It is not because of the
> electrical/logical USB host/device setting because I checked that; I
> know how to use sysfs to change it.
Update: I disassembled my FreeRunner; everything looks OK. I did not
try using a digital multimeter to test the continuity between the data
pins in the USB socket and the connections between the USB socket and
the PCB, though. I noticed pin 4 (ID) of the 5-pin mini USB F connector
(socket) does not appear to contact pin 4 on the male connector (the
plug on the cable). Is this normal?
I have fully reassembled my FreeRunner; it still works, except for USB
data. However, now I really think this is a hardware problem because
the behaviour is the same when my FreeRunner is running U-Boot from NOR,
U-Boot from NAND, or QtMoko from NAND. When I connect my FreeRunner to
my Windows 7 laptop, Windows 7 displays a balloon notification saying
“USB Device Not Recognized: One of the USB devices attached to this
computer has malfunctioned, and Windows does not recognize it.”. When I
connect my FreeRunner to a tower PC running Ubuntu v8.10 Desktop Edition
i386, Linux detects a new full-speed USB device, but does not
specifically detect a FreeRunner. lsusb lists no connected devices.
This is normal because this PC is headless, but it should still list the
FreeRunner if Linux detects the FreeRunner specifically instead of
detecting only a generic full-speed USB device.
I called SDG Systems in Pennsylvania since I bought my FreeRunner from
them in July or August 2009, but they told me my FreeRunner is not
covered by warranty because the manufacturer’s warranty is only 2 weeks
(!). They do not even sell FreeRunners anymore unless a customer wants
to order 10 or more because the FreeRunner was not profitable for them. :(
Does anyone have any more ideas? Should I ask on the Openmoko hardware
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