Am 25.06.2013 19:29, schrieb Johan Hovold:
Maybe Aric can explain it better?
I only see several problems to use a PL-2303 HX with newer kernels.
Just to be clear, that's your setup. AFAICT Aric never got his setup to
work with any kernel (but for a brief period with the same 3.0 kernel).
The only solution i see is to give up any PL-2303 HX device like Aric.
But the problems for other users will remain ...
Only if the hardware is actually broken, of course. I'm just saying that
it looks like two different (hw related) problems here.
Yes - that's correct. I misunderstood.
I could not detect wrong bytes when i received some bytes after plugin.
In fact we have to different problems here.
I remember a similar discussion on not reliable usb connectors with
external hdd's.
This connectors are often produced cheap and the connection is not
reliable each time after plugin.
When you argue that you must forget each device or hardware in case of
an error, you can forgot much usb devices using
with Linux.
(In fact windows just ignores the errors.)
My forecast is that the number of sporadic errors will increase,
specially with usb 3.
Sure, if it is something that can be worked around in software without
too much overhead for non-broken devices (I have only a working HX
here), then we can try it. Perhaps the device you were gonna send to
Greg can be used to implement such a work-around (or at least be used to
determine the cause of the problem).
This error override seems to work for some devices, but i have no knowledge of the general Linux USB architecture.
I only want to remark that it could happen sometimes that a device has a bad connection after plugin.
Next time it can work without any error.
Of course there is many cheap (china) hardware that always produces errors.
I have seen many bad usb hubs.
Johan
Hopefully the problem with the PL-2303 HX could be fixed in the future.
As Greg has written the RS-232 is not dead for more than 30 years and it will live for many more years.
Only this usb converters make simple and good things problematic ...
Karsten
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