Bug#640391: linux-image-3.0.0-1-686-pae: ark3116 driver regression
On Thu, Sep 08, 2011 at 06:33:29PM +0200, Bart Hartgers wrote:
> Hi Ben, ael,
>
> I am reading this on my phone and will not be able to look into this
> properly (ie access a computer) before next week.
>
> In the mean time: strace logs would be very useful. And maybe the problen
> has to do with the new driver doing real handshaking while the old one
> effectively ignored hs signals iirc.
That sounds very likely from what I can see. I don't think that
gpsbabel is doing anything beyond opening the file & trying to read it.
/dev/ttyUSB* is just treated as any other file, I suspect.
In passing, the serial port on the garmin satnav has a 4 wire
connection. So any hardwired handshaking must be minimal. The
garmin cable just takes those to the usual 9-pin "RS232" serial plug -
to which the USB converter connects.
I might try statserial and strace that as well if I have time. Actually
I seem to remember that statserial would only read "serial" files,
and could not connect to /dev/ttyUSB*, so that probably won't
work.
As earlier in the report, I am away from home, using a small netbook
with limited connectivity, so compiling and testing with a stock
kernal isn't very practical for the moment.
Thanks for all the help so far to both of you,
ael
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