[Pxc] pxc_control locked out by pxc_live, sometimes

[Alessandro Rubini]

>> What about "pxc_control getmux /dev/pxc0Hpgm" ? (the device can be either
>> first or last argument, or PXCDEVICE in the environment)
> 
> That works!  Solves my problem.  Many thanks!

Good. But we have a buglet to fix.

> By the way, pxc-0.24 does not show streaking, but pxc-0.26 does.

Interesting. I've diffed the two and didn't find anything relevant at
a glance.

Will look further in the next days.

/alessandro