Neil Williams: Problems with minicom over USB
Embedded systems (especially bootloaders) need serial connections but many laptops and modern desktops simply do away with the serial port altogether. Up until now, I've kept my previous desktop machine around (which happens to also have a parallel port so acts as the home network print server because I don't have a USB printer either) and then connect to minicom over SSH.Now, yes, I can configure networking over USB once the device is installed but to actually fix installation problems, I need serial on my other machines. I've got a USB to serial converter, turns out to be a Prolific 2303 chipset (it's the basic one with a cable from Maplins) which is quite well supported.
Now the weird stuff.
My powerpc laptop sees the Prolific chipset and configures a USB device that, initially, minicom complains about - but if I set the port from 'dmesg' (/dev/ttyUSB0) in minicom -s, it works. Well, almost. I can see the output of the device but no keyboard strokes are passed on to the board which means it's almost workable whilst still being completely useless.
My problematic HP laptop accepts the Prolific chipset but does not configure a USB device node. Without a device node, minicom just fails.
Bah.
This HP laptop is still causing me grief. USB seems to fail after hibernation and only works at all if irqfixup is added to the kernel boot parameters. With irqfixup, the laptop randomly hangs. I almost need to setup parallel configs in grub of "run USB but don't hibernate" and "run for more than 1 hour" as mutually exclusive. Oh, and the external monitor connection used for presentations is only seen if the projector is connected during a reboot of the HP laptop.
Bah x 3.
This is no doubt one of the best FOSDEMs, ever. At least to
me it was, and I've been to every FOSDEM, and to the second day of the
original OSDEM as well. Great weather, great people, great talks, and
great fun. What more can one want? Where I had to nag about a few things
yesterday, today I can only feel exhausted, but happy.
Some loose ends:

1. After several years of it sitting on my shelf, I finally read Kernighan and Pike's "The Practice of Programming". I was always a little intimidated by this slender little book. I felt like it was full of wisdom that I couldn't really absorb at the right pace. Now that I've spent some time working on more challenging code and trying to come to grips with at the least the basics of more advanced computing concepts it was the right time to read it. I can't recommend it highly enough, it really is packed with wisdom. I've got Kernighan's "Software Tools" on the way, and I'll post a proper review of this at some point since it's not as well known.

At Melbourne Tullamarine airport today, I was asked to present
the credit card used to book my flights as a security measure to be
able to fly Bangkok-Zurich. I did not need the card for the
Melbourne-Bangkok leg. Unfortunately, I left the card at home for
various reasons. In the end, they just issued both boarding passes
anyway.
I was not allowed to take the throw-away wooden chopsticks that
came with my Pad Thai lunch through the security checkpoint.
For dinner on the airplane to Bangkok, we were given plastic
knives and metal forks. For dinner on the second trip, we
got metal knives.
At Bangkok airport, I had to pass a security checkpoint changing
planes. They confiscated the plastic water bottle which was given
to me on the flight from Melbourne (the bottle said Thai airlines
on the label).
The lady in front of me was using one of those telescopic
walking sticks, she apparently had a bad leg. They didn t even
bother asking about the stick, which she ran through the x-ray.
Terrorists don t have bad legs, nor know how to pretend.
How long are we going to put up with this bullshit?
NP:
In the past few months in the 
I wonder if things could go any worse if we actively tried?
So despite going back to see the cardiologist on Monday afternoon, concerned
about there possibly being still some sort of infection, and being told
there wasn't, on Thursday morning, the top part of the incision was looking
swollen.
It looked even more so by the evening when I got home from work, and Sarah
emailed a photo to the cardiologist, and he agreed it didn't look too crash
hot, so he phoned a prescription for another, longer course of antibiotics
through to the pharmacy, but too late to get filled last night.
By bedtime it was looking even more ready to blow, and sure enough, around
1am (it's always 1am) it erupted everywhere. Fortunately (for me), I missed
all the gory details, but I think there was a fair bit of fluid built up in
there.
So we went back to the clinic this morning, and they decided that they
needed to open up part of the incision to let it drain and heal properly.
They took another swab to run another culture, and then got a physician's
assistant to take to her with a scalpel. I've seen my poor wife go through
too many painful things in the last six months. Today's was no better. Most
of the problem was the local anaesthetic injections, but watching them open
up the incision again wasn't much fun either. No one should have to go
through as much shit in a short time as what Sarah has had to. It's just not
fair.
She now has a gaping hole in her chest with some gauze packed in it, which
has to be changed twice a day (by lucky old me). The idea is to let it heal
from the bottom up, rather than the top down, as it seems an abscess had
formed in the wound, and that was were all the trouble was. So by leaving it
all open, it can drain properly, and heal from the bottom up. $DEITY only
knows what sort of mess it's going to make of the incision area, but we can
deal with that later. They reckon it'll take another 4-6 weeks to heal.
I'm really hoping now that with it draining, and another course of
antibiotics, Sarah will be in much less pain.
I just did the evening gauze change. Fun. The opening in the incision is
longer than I remembered them making this morning. It's about an inch long,
and a centimetre deep, and there's a small hole in the bottom that
presumably leads to the "interior". It's not as bad looking as I thought it
might be. Packing the gauze in didn't seem to hurt Sarah too much, which is
just as well.
This really is the pits. I really hope this is the end of this, and the
infection goes away for good, and the incision heals quickly. In terms of
recovery, this is a pretty major setback in my opinion. From now on, we
won't be relying on the cardiologist for surgical opinions, we'll be
insisting a member of the surgical team checks Sarah out.