Christian Reis lives here
I know you know. But well, just in case you forgot..
Since 2004, I've been actively involved in
development of Launchpad, and in
2005 I became application manager for the project, together with Steve Alexander. These days
I lead a team of over 30 people at Canonical working on building a
platform for the future of open source development and
In 2003, I somehow managed an MSc degree from USP São Carlos, where I
wrangled out my dissertation on defining a Process Model for Free
Software Projects. My MSc project is described in two long documents (in portuguese). I
graduated in Computer Engineering from UFSCar in 1997, though most of that
time evaporated into swimming pools and bike trails.
A couple of years ago (just as I had decided I wanted nothing to do
with computers) I discovered Free Software and Unix, and I've been
working on both ever since then. I've contributed to dozens of
free software projects, and I am currently an active developer for
Bugzilla, PyGTK, ZODB, Kiwi and IndexedCatalog.
I've worked with Web development (who hasn't?) and Usability,
additionally, in the past years.
I am a partner at Async Open
Source, a company that provides development and consulting
services focused on on Free Software. I helped found Async in early
When I'm not pretending to be a software engineering manager I
engage in outdoor sports, travelling, language and vain philosophy. I've raced mountain bikes
for a couple of years now, and from 1999 to 2003 I raced a number of
national-level adventure races, including the multi-day EMA 2000 and
Getting in touch with me
<kiko at async.com.br>
||+55 16 3376 0125 work
+55 16 9112 6430 mobile
Rua Rui Barbosa 1977|
Sao Carlos, SP
What he's been up to
(Read older diary entries)
Juju and LXC
- Debugging session as to why I can't get the local provider to give me
new machines in Juju. This is probably a regression in 220.127.116.11, but I
still don't know yet.
- One thing which is interesting is that the log for machine-0 is
actually where a lot of the container traffic appears. machine-0 is the
bootstrap node, and in the local provider, it's what houses all the
- root@chorus:/etc/default# apt-get install lxc/precise-backports
- Escape the console?
- lxc-ls is busted?
HP Virtual Rooms
- The trick to getting [rooms.hp.com] to work is to know that the
plugin and application they provide are 32-bit. That's not something
which is obvious unless you actually read the page carefully, and the
failure mode is completely unobvious (the installer runs, the plugin is
there, the test page looks like it works but no virtual room ever opens,
with a URL flashing quickly before loading back into the test page). There
is a trick which you can use to test manually and see what is wrong:
kiko@limpinho:~$ cd .hpvirtualrooms
bash: ./hpvirtualrooms: No such file or directory
kiko@limpinho:~/.hpvirtualrooms$ file hpvirtualrooms
hpvirtualrooms: ELF 32-bit LSB executable, Intel 80386, version 1
(SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.15
Aha! Okay. So I need some 32-bit libraries..
- First step, I need
sudo apt-get install libc6-i386
- That lets me see via ldd the situation. And it's pretty bad: I need a
total of 44 libraries pulled in as dependencies from this core set:
libsm6:i386 libpng12:i386 libfreetype6:i386 libxi6:i386
libx11-6:i386 libasound2:i386 libstdc++6:i386 libfontconfig1:i386
libxrender1:i386 libxrandr2:i386 libglib2.0-0:i386 libxfixes3:i386
- But once that's done, it seems to work. I need to put a bit more
effort into validating it in the office, but I at least now know how to
do it. And best of all, it doesn't seem to need Java!
Android and Account Syncing
- If you look at your Android phone settings and all your accounts have
"sync disabled", you will never figure out how to fix it. It turns out
that you need to look in the Gmail app and enable sync. That in turn
enables Android-wide synchronization, or at least that's my experience
tells you to do. WTF.
- Ah, now that I looked at
it looks more sensible. So the reality is that you control that same
setting in both gmail and in the Data Usage settings screen. I bet I
disabled it while roaming internationally!
DHCP in the eyes of Wireshark
- We had a cable modem that was annoying the hell out of us because it
needed to be restarted periodically -- twice a day in the latest weeks.
So we called the cable company in and convinced them to swap the modem
out. In putting the new modem in I did a lot of log-digging and realized
that actually the request note that goes out periodically:
Feb 20 21:31:05 anthem dhclient: DHCPREQUEST of 18.104.22.168 on eth3 to 22.214.171.124 port 67
is actually not a request which is going unanswered, since Wireshark
shows clearly that there is a Request packet followed by an ACK from
that IP address. Oh, actually, I am just grepping the log wrong, because
if you look at the full successful operation it looks like this:
Feb 17 12:22:51 anthem dhclient: DHCPREQUEST of 126.96.36.199 on eth3 to 188.8.131.52 port 67
Feb 17 12:22:51 anthem dhclient: DHCPACK of 184.108.40.206 from 220.127.116.11
Feb 17 12:22:51 anthem dhclient: bound to 18.104.22.168 -- renewal in 4407 seconds.
- The problem we were having previously was that at some point the modem
stopped working, and the refresh DHCPREQUEST never got a response, which
Feb 17 20:01:24 anthem dhclient: DHCPREQUEST of 22.214.171.124 on eth3 to 126.96.36.199 port 67
Feb 17 20:02:32 dhclient: last message repeated 6 times
Feb 17 20:03:35 dhclient: last message repeated 4 times
Sometimes the modem would do 7 refreshes before stalling, but lately it
was rare to get to 4. The log looks much healthier now!
- One particularly weird thing is that in the actual IP allocation
request comes from a different DHCP server than the one which provides
Feb 20 17:37:45 anthem dhclient: DHCPDISCOVER on eth3 to 255.255.255.255 port 67 interval 3
Feb 20 17:37:45 anthem dhclient: DHCPREQUEST of 188.8.131.52 on eth3 to 255.255.255.255 port 67
Feb 20 17:37:45 anthem dhclient: DHCPOFFER of 184.108.40.206 from 220.127.116.11
Feb 20 17:37:45 anthem dhclient: DHCPACK of 18.104.22.168 from 22.214.171.124
Feb 20 17:37:46 anthem dhclient: bound to 126.96.36.199 -- renewal in 4840 seconds.
So 188.8.131.52 provided the response, but if you look at the DHCP
Server Identifier that comes back in the OFFER packet it says
184.108.40.206. I don't think that's illegal, but it's certainly not what
I've seen in normal site-wide DHCP. And if you look at the updates
afterwards the refresh DHCPREQUEST is ACK'd by 220.127.116.11.
Undocked Libreoffice panes
- I had this problem for the longest time, and just found out that it is
actually a documentation issue:
- How on earth did they get to control-doubleclick, though?!
ADSL and Telefonica
- Once a year I try calling my operator to see if they can upgrade my
uplink. I'm amazed that to this day I can only get a 4MB/s link on an
ADSL connection from Vivo (ex-Telefonica, ex-Telesp), the local wired
operator. It's even weirder that on my current line, which I've had for
about 10 years, I can't get an upgrade at all from the current 1MB/s. At
the same time, Virtua offers me 20 and 100MB/s on cable at not much more
that Vivo charges for their measly 1MB/s. Maybe I won't call again next