Gdb for cross development for ARM
 

Which is the most recommended gdb-variant/version for remote debugging ARM Cortex-A7 target on x86_64 Linux host (Debian Jessie)?

It looks like the gdb-multiarch and gdb-arm-none-eabi (at least versions 7.7.1 in Jessie repo) have issues with watchpoints. Is that a known bug?
(Gdb doesn't single-step over the watchpoint.)

Is Linaro gdb any better?

It may be that the problems are caused by improper stop packet.
Have to check...

That was it - missing ';' et teh end of T05-packet.