http://www.perlmonks.org?node_id=1048643


in reply to Re^2: Really Odd Bug With LWP and Device::SerialPort
in thread Really Odd Bug With LWP and Device::SerialPort

Well, there is some differences in the 'MAGIC' attributes before and after the substr (no MAGIC before, but MAGIC after) when you do Devel::Peek::Dump($data), but I don't know enough about that stuff to know what it means (non-magic unicode strings don't work with serial ports?).

This appears after the substr:

MAGIC = 0x6336a0 MG_VIRTUAL = &PL_vtbl_utf8 MG_TYPE = PERL_MAGIC_utf8(w) MG_LEN = -1

I would think that you might want to specify the encoding when writing to a serial port though.

Update: Sounds somewhat similar to this issue?