- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Modalias_strings___a_practical_way_to_map__stuff__to_hardware.html">Modalias strings - a practical way to map "stuff" to hardware</a></div>
- <div class="date">14th January 2013</div>
- <div class="body"><p>While looking into how to look up Debian packages based on hardware
-information, to find the packages that support a given piece of
-hardware, I refreshed my memory regarding modalias values, and decided
-to document the details. Here are my findings so far, also available
-in
-<a href="http://anonscm.debian.org/viewvc/debian-edu/trunk/src/hw-support-handler/">the
-Debian Edu subversion repository</a>:
-
-<p><strong>Modalias decoded</strong></p>
-
-<p>This document try to explain what the different types of modalias
-values stands for. It is in part based on information from
-<URL: <a href="https://wiki.archlinux.org/index.php/Modalias">https://wiki.archlinux.org/index.php/Modalias</a> >,
-<URL: <a href="http://unix.stackexchange.com/questions/26132/how-to-assign-usb-driver-to-device">http://unix.stackexchange.com/questions/26132/how-to-assign-usb-driver-to-device</a> >,
-<URL: <a href="http://code.metager.de/source/history/linux/stable/scripts/mod/file2alias.c">http://code.metager.de/source/history/linux/stable/scripts/mod/file2alias.c</a> > and
-<URL: <a href="http://cvs.savannah.gnu.org/viewvc/dmidecode/dmidecode.c?root=dmidecode&view=markup">http://cvs.savannah.gnu.org/viewvc/dmidecode/dmidecode.c?root=dmidecode&view=markup</a> >.
-
-<p>The modalias entries for a given Linux machine can be found using
-this shell script:</p>
-
-<pre>
-find /sys -name modalias -print0 | xargs -0 cat | sort -u
-</pre>
-
-<p>The supported modalias globs for a given kernel module can be found
-using modinfo:</p>
-
-<pre>
-% /sbin/modinfo psmouse | grep alias:
-alias: serio:ty05pr*id*ex*
-alias: serio:ty01pr*id*ex*
-%
-</pre>
-
-<p><strong>PCI subtype</strong></p>
-
-<p>A typical PCI entry can look like this. This is an Intel Host
-Bridge memory controller:</p>
-
-<p><blockquote>
-pci:v00008086d00002770sv00001028sd000001ADbc06sc00i00
-</blockquote></p>
-
-<p>This represent these values:</p>
-
-<pre>
- v 00008086 (vendor)
- d 00002770 (device)
- sv 00001028 (subvendor)
- sd 000001AD (subdevice)
- bc 06 (bus class)
- sc 00 (bus subclass)
- i 00 (interface)
-</pre>
-
-<p>The vendor/device values are the same values outputted from 'lspci
--n' as 8086:2770. The bus class/subclass is also shown by lspci as
-0600. The 0600 class is a host bridge. Other useful bus values are
-0300 (VGA compatible card) and 0200 (Ethernet controller).</p>
-
-<p>Not sure how to figure out the interface value, nor what it
-means.</p>
-
-<p><strong>USB subtype</strong></p>
-
-<p>Some typical USB entries can look like this. This is an internal
-USB hub in a laptop:</p>
-
-<p><blockquote>
-usb:v1D6Bp0001d0206dc09dsc00dp00ic09isc00ip00
-</blockquote></p>
-
-<p>Here is the values included in this alias:</p>
-
-<pre>
- v 1D6B (device vendor)
- p 0001 (device product)
- d 0206 (bcddevice)
- dc 09 (device class)
- dsc 00 (device subclass)
- dp 00 (device protocol)
- ic 09 (interface class)
- isc 00 (interface subclass)
- ip 00 (interface protocol)
-</pre>
-
-<p>The 0900 device class/subclass means hub. Some times the relevant
-class is in the interface class section. For a simple USB web camera,
-these alias entries show up:</p>
-
-<p><blockquote>
-usb:v0AC8p3420d5000dcEFdsc02dp01ic01isc01ip00
-<br>usb:v0AC8p3420d5000dcEFdsc02dp01ic01isc02ip00
-<br>usb:v0AC8p3420d5000dcEFdsc02dp01ic0Eisc01ip00
-<br>usb:v0AC8p3420d5000dcEFdsc02dp01ic0Eisc02ip00
-</blockquote></p>
-
-<p>Interface class 0E01 is video control, 0E02 is video streaming (aka
-camera), 0101 is audio control device and 0102 is audio streaming (aka
-microphone). Thus this is a camera with microphone included.</p>
-
-<p><strong>ACPI subtype</strong></p>
-
-<p>The ACPI type is used for several non-PCI/USB stuff. This is an IR
-receiver in a Thinkpad X40:</p>
-
-<p><blockquote>
-acpi:IBM0071:PNP0511:
-</blockquote></p>
-
-<p>The values between the colons are IDs.</p>
-
-<p><strong>DMI subtype</strong></p>
-
-<p>The DMI table contain lots of information about the computer case
-and model. This is an entry for a IBM Thinkpad X40, fetched from
-/sys/devices/virtual/dmi/id/modalias:</p>
-
-<p><blockquote>
-dmi:bvnIBM:bvr1UETB6WW(1.66):bd06/15/2005:svnIBM:pn2371H4G:pvrThinkPadX40:rvnIBM:rn2371H4G:rvrNotAvailable:cvnIBM:ct10:cvrNotAvailable:
-</blockquote></p>
-
-<p>The values present are</p>
-
-<pre>
- bvn IBM (BIOS vendor)
- bvr 1UETB6WW(1.66) (BIOS version)
- bd 06/15/2005 (BIOS date)
- svn IBM (system vendor)
- pn 2371H4G (product name)
- pvr ThinkPadX40 (product version)
- rvn IBM (board vendor)
- rn 2371H4G (board name)
- rvr NotAvailable (board version)
- cvn IBM (chassis vendor)
- ct 10 (chassis type)
- cvr NotAvailable (chassis version)
-</pre>
-
-<p>The chassis type 10 is Notebook. Other interesting values can be
-found in the dmidecode source:</p>
-
-<pre>
- 3 Desktop
- 4 Low Profile Desktop
- 5 Pizza Box
- 6 Mini Tower
- 7 Tower
- 8 Portable
- 9 Laptop
- 10 Notebook
- 11 Hand Held
- 12 Docking Station
- 13 All In One
- 14 Sub Notebook
- 15 Space-saving
- 16 Lunch Box
- 17 Main Server Chassis
- 18 Expansion Chassis
- 19 Sub Chassis
- 20 Bus Expansion Chassis
- 21 Peripheral Chassis
- 22 RAID Chassis
- 23 Rack Mount Chassis
- 24 Sealed-case PC
- 25 Multi-system
- 26 CompactPCI
- 27 AdvancedTCA
- 28 Blade
- 29 Blade Enclosing
-</pre>
-
-<p>The chassis type values are not always accurately set in the DMI
-table. For example my home server is a tower, but the DMI modalias
-claim it is a desktop.</p>
-
-<p><strong>SerIO subtype</strong></p>
-
-<p>This type is used for PS/2 mouse plugs. One example is from my
-test machine:</p>
-
-<p><blockquote>
-serio:ty01pr00id00ex00
-</blockquote></p>
-
-<p>The values present are</p>
-
-<pre>
- ty 01 (type)
- pr 00 (prototype)
- id 00 (id)
- ex 00 (extra)
-</pre>
-
-<p>This type is supported by the psmouse driver. I am not sure what
-the valid values are.</p>
-
-<p><strong>Other subtypes</strong></p>
-
-<p>There are heaps of other modalias subtypes according to
-file2alias.c. There is the rest of the list from that source: amba,
-ap, bcma, ccw, css, eisa, hid, i2c, ieee1394, input, ipack, isapnp,
-mdio, of, parisc, pcmcia, platform, scsi, sdio, spi, ssb, vio, virtio,
-vmbus, x86cpu and zorro. I did not spend time documenting all of
-these, as they do not seem relevant for my intended use with mapping
-hardware to packages when new stuff is inserted during run time.</p>
-
-<p><strong>Looking up kernel modules using modalias values</strong></p>
-
-<p>To check which kernel modules provide support for a given modalias,
-one can use the following shell script:</p>
-
-<pre>
- for id in $(find /sys -name modalias -print0 | xargs -0 cat | sort -u); do \
- echo "$id" ; \
- /sbin/modprobe --show-depends "$id"|sed 's/^/ /' ; \
- done
-</pre>
-
-<p>The output can look like this (only the first few entries as the
-list is very long on my test machine):</p>
-
-<pre>
- acpi:ACPI0003:
- insmod /lib/modules/2.6.32-5-686/kernel/drivers/acpi/ac.ko
- acpi:device:
- FATAL: Module acpi:device: not found.
- acpi:IBM0068:
- insmod /lib/modules/2.6.32-5-686/kernel/drivers/char/nvram.ko
- insmod /lib/modules/2.6.32-5-686/kernel/drivers/leds/led-class.ko
- insmod /lib/modules/2.6.32-5-686/kernel/net/rfkill/rfkill.ko
- insmod /lib/modules/2.6.32-5-686/kernel/drivers/platform/x86/thinkpad_acpi.ko
- acpi:IBM0071:PNP0511:
- insmod /lib/modules/2.6.32-5-686/kernel/lib/crc-ccitt.ko
- insmod /lib/modules/2.6.32-5-686/kernel/net/irda/irda.ko
- insmod /lib/modules/2.6.32-5-686/kernel/drivers/net/irda/nsc-ircc.ko
- [...]
-</pre>
-
-<p>If you want to help implementing a system to let us propose what
-packages to install when new hardware is plugged into a Debian
-machine, please send me an email or talk to me on
-<a href="irc://irc.debian.org/%23debian-devel">#debian-devel</a>.</p>
-
-<p><strong>Update 2013-01-15:</strong> Rewrite "cat $(find ...)" to
-"find ... -print0 | xargs -0 cat" to make sure it handle directories
-in /sys/ with space in them.</p>
+ <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Victor_Ni_u.html">Debian Edu interview: Victor Nițu</a></div>
+ <div class="date">17th June 2013</div>
+ <div class="body"><p>The <a href="http://www.skolelinux.org/">Debian Edu and
+Skolelinux</a> distribution have users and contributors all around the
+globe. And a while back, an enterprising young man showed up on
+<a href="irc://irc.debian.org/%23debian-edu">our IRC channel
+#debian-edu</a> and started asking questions about how Debian Edu
+worked. We answered as good as we could, and even convinced him to
+help us with translations. And today I managed to get an interview
+with him, to learn more about him.</p>
+
+<p><strong>Who are you, and how do you spend your days?</strong></p>
+
+<p>I'm a 25 year old free software enthusiast, living in Romania,
+which is also my country of origin. Back in 2009, at a New Year's Eve
+party, I had a very nice <strike>beer</strike> discussion with a
+friend, when we realized we have no organised Debian community in our
+country. A few days later, we put together the infrastructure for such
+community and even gathered a nice Debian-ish crowd. Since then, I
+began my quest as a free software hacker and activist and I am
+constantly trying to cover as much ground as possible on that
+field.</p>
+
+<p>A few years ago I founded a small web development company, which
+provided me the flexible schedule I needed so much for my
+activities. For the last 13 months, I have been the Technical Director
+of <a href="http://ceata.org/">Fundația Ceata</a>, which is a free
+software activist organisation endorsed by the FSF and the FSFE, and
+the only one we have in our country.</p>
+
+<p><strong>How did you get in contact with the Skolelinux / Debian Edu
+project?</strong></p>
+
+<p>The idea of participating in the Debian Edu project was a surprise
+even to me, since I never used it before I began getting involved in
+it. This year I had a great opportunity to deliver a talk on
+educational software, and I knew immediately where to look. It was a
+love at first sight, since I was previously involved with some of the
+technologies the project incorporates, and I rapidly found a lot of
+ways to contribute.</p>
+
+<p>My first contributions consisted in translating the installer and
+configuration dialogs, then I found some bugs to squash (I still
+haven't fixed them yet though), and I even got my eyes on some other
+areas where I can prove myself helpful. Since the appetite for free
+software in my country is pretty low, I'll be happy to be the first
+one around here advocating for the project's adoption in educational
+environments, and maybe even get my hands dirty in creating a flavour
+for our own needs. I am not used to make very advanced plannings, so
+from now on, time will tell what I'll be doing next, but I think I
+have a pretty consistent starting point.</p>
+
+<p><strong>What do you see as the advantages of Skolelinux/Debian
+Edu?</strong></p>
+
+<p>Not a long time ago, I was in the position of configuring and
+maintaining a LDAP server on some Debian derivative, and I must say it
+took me a while. A long time ago, I was maintaining a bigger
+Samba-powered infrastructure, and I must say I spent quite a lot of
+time on it. I have similar stories about many of the services included
+with Skolelinux, and the main advantage I see about it is the
+out-of-the box availability of them, making it quite competitive when
+it comes to managing a school's network, for example.</p>
+
+<p>Of course, there is more to say about Skolelinux than the
+availability of the software included, its flexibility in various
+scenarios is something I can't wait to experiment "into the wild" (I
+only played with virtual machines so far). And I am sure there is a
+lot more I haven't discovered yet about it, being so new within the
+project.</p>
+
+<p><strong>What do you see as the disadvantages of Skolelinux / Debian
+Edu?</strong></p>
+
+<p>As usual, when it comes to Debian Blends, I see as the biggest
+disadvantage the lack of a numerous team dedicated to the
+project. Every day I see the same names in the changelogs, and I have
+a constantly fear of the bus factor in this story. I'd like to see
+Debian Edu advertised more as an entry point into the Debian
+ecosystem, especially amongst newcomers and students. IMHO there are a
+lot low-hanging fruits in terms of bug squashing, and enough
+opportunities to get the feeling of the Debian Project's dynamics. Not
+to mention it's a very fun blend to work on!</p>
+
+<p>Derived from the previous statement, is the delay in catching up
+with the main Debian release and documentation. This is common though
+to all blends and derivatives, but it's an issue we can all work
+on.</p>
+
+<p><strong>Which free software do you use daily?</strong></p>
+
+<p>I can hardly imagine myself spending a day without Vim, since my
+daily routine covers writing code and hacking configuration files. I
+am a fan of the Awesome window manager (but I also like the
+Enlightenment project a lot!),
+<a href="http://www.claws-mail.org/">Claws Mail</a> due to its ease of
+use and very configurable behaviour. Recently I fell in love with
+<a href="https://launchpad.net/redshift">Redshift</a>, which helps me
+get through the night without headaches. Of course, there is much more
+stuff in this bag, but I'll need a blog on my own for doing this!</p>
+
+<p><strong>Which strategy do you believe is the right one to use to
+get schools to use free software?</strong></p>
+
+<p>Well, on this field, I cannot do much more than experiment right
+now. So, being far from having a recipe for success, I can only assume
+that:</p>
+
+<ul>
+
+<li>schools would like to get rid of proprietary software</li>
+
+<li>students will love the openness of the system, and will want to
+ experiment with it - maybe we need to harvest the native curiosity
+ of teenagers more?</li>
+
+<li>there is no "right one" when it comes to strategies, but it would
+ be useful to have some success stories published somewhere, so
+ other can get some inspiration from them (I know I'd promote
+ them!)</li>
+
+<li>more active promotion - talks, conferences, even small school
+ lectures can do magical things if they encounter at least one
+ person interested. Who knows who that person might be? ;-)</li>
+
+</ul>
+
+<p>I also see some problems in getting Skolelinux into schools; for
+example, in our country we have a great deal of corruption issues, so
+it might be hard(er) to fight against proprietary solutions. Also,
+people who relied on commercial software for all their lives, would be
+very hard to convert against their will.</p>
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