- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Debian_Edu_interview__Jonathan_Carter.html">Debian Edu interview: Jonathan Carter</a></div>
- <div class="date">12th June 2013</div>
- <div class="body"><p>There is a certain cross-over between the
-<a href="http://www.skolelinux.org/">Debian Edu / Skolelinux
-project</a> and <a href="http://www.edubuntu.org/">the Edubuntu
-project</a>, and for example the LTSP packages in Debian are a joint
-effort between the projects. One person with a foot in both camps is
-Jonathan Carter, which I am now happy to present to you.</p>
-
-<p><strong>Who are you, and how do you spend your days?</strong></p>
-
-<p>I'm a South-African free software geek who lives in Cape Town. My
-days vary quite a bit since I'm involved in too many things. As I'm
-getting older I'm learning how to focus a bit more :)</p>
-
-<p>I'm also an Edubuntu contributor and I love when there are
-opportunities for the Edubuntu and Debian Edu projects to benefit from
-each other.</p>
-
-<p><strong>How did you get in contact with the Skolelinux / Debian Edu
-project?</strong></p>
-
-<p>I've been somewhat familiar with the project before, but I think my
-first direct exposure to the project was when I met Petter
-[Reinholdtsen] and Knut [Yrvin] at the Edubuntu summit in 2005 in
-London. They provided great feedback that helped the bootstrapping of
-Edubuntu. Back then Edubuntu (and even Ubuntu) was still very new and
-it was great getting input from people who have been around longer. I
-was also still very excitable and said yes to everything and to this
-day I have a big todo list backlog that I'm catching up with. I think
-over the years the relationship between Edubuntu and Debian-Edu has
-been gradually improving, although I think there's a lot that we could
-still improve on in terms of working together on packages. I'm sure
-we'll get there one day.</p>
-
-<p><strong>What do you see as the advantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>Debian itself already has so many advantages. I could go on about
-it for pages, but in essence I love that it's a very honest project
-that puts its users first with no hidden agendas and also produces
-very high quality work.</p>
-
-<p>I think the advantage of Debian Edu is that it makes many common
-set-up tasks simpler so that administrators can get up and running
-with a lot less effort and frustration. At the same time I think it
-helps to standardise installations in schools so that it's easier for
-community members and commercial suppliers to support.</p>
-
-<p><strong>What do you see as the disadvantages of Skolelinux / Debian
-Edu?</strong></p>
-
-<p>I had to re-type this one a few times because I'm trying to
-separate "disadvantages" from "areas that need improvement" (which is
-what I originally rambled on about)</p>
-
-<p>The biggest disadvantage I can think of is lack of manpower. The
-project could do so much more if there were more good contributors. I
-think some of the problems are external too. Free software and free
-content in education is a no-brainer but it takes some time to catch
-on. When you've been working with the same proprietary eco-system for
-years and have gotten used to it, it can be hard to adjust to some
-concepts in the free software world. It would be nice if there were
-more Debian Edu consultants across the world. I'd love to be one
-myself but I'm already so over-committed that it's just not possible
-currently.</p>
-
-<p>I think the best short-term solution to that large-scale problem is
-for schools to be pro-active and share their experiences and grow
-their skills in-house. I'm often saddened to see how much money
-educational institutions spend on 3rd party solutions that they don't
-have access to after the service has ended and they could've gotten so
-much more value otherwise by being more self-sustainable and
-autonomous.</p>
-
-<p><strong>Which free software do you use daily?</strong></p>
-
-<p>My main laptop dual-boots between Debian and Windows 7. I was
-Windows free for years but started dual-booting again last year for
-some games which help me focus and relax (Starcraft II in
-particular). Gaming support on Linux is improving in leaps and bounds
-so I suppose I'll soon be able to regain that disk space :)</p>
-
-<p>Besides that I rely on Icedove, Chromium, Terminator, Byobu, irssi,
-git, Tomboy, KVM, VLC and LibreOffice. Recently I've been torn on
-which desktop environment I like and I'm taking some refuge in Xfce
-while I figure that out. I like tools that keep things simple. I enjoy
-Python and shell scripting. I went to an Arduino workshop recently and
-it was awesome seeing how easy and simple the IDE software was to get
-up and running in Debian compared to the users running Windows and OS
-X.</p>
-
-<p>I also use mc which some people frown upon slightly. I got used to
-using Norton Commander in the early 90's and it stuck (I think the
-people who sneer at it is just jealous that they don't know how to use
-it :p)
-
-<p><strong>Which strategy do you believe is the right one to use to
-get schools to use free software?</strong></p>
-
-<p>I think trying to force it is unproductive. I also think that in
-many cases it's appropriate for schools to use non-free systems and I
-don't think that there's any particular moral or ethical problem with
-that.</p>
-
-<p>I do think though that free software can already solve so so many
-problems in educational institutions and it's just a shame not taking
-advantage of that.</p>
-
-<p>I also think that some curricula need serious review. For example,
-some areas of the world rely heavily on very specific versions of MS
-Office, teaching students to parrot menu items instead of learning the
-general concepts. I think that's very unproductive because firstly, MS
-Office's interface changes drastically every few years and on top of
-that it also locks in a generation to a product that might not be the
-best solution for them.</p>
-
-<p>To answer your question, I believe that the right strategy is to
-educate and inform, giving someone the information they require to
-make a decision that would work for them.</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian edu">debian edu</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>, <a href="http://people.skolelinux.org/pere/blog/tags/intervju">intervju</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
- <div class="entry">
- <div class="title"><a href="http://people.skolelinux.org/pere/blog/Fixing_the_Linux_black_screen_of_death_on_machines_with_Intel_HD_video.html">Fixing the Linux black screen of death on machines with Intel HD video</a></div>
- <div class="date">11th June 2013</div>
- <div class="body"><p>When installing RedHat, Fedora, Debian and Ubuntu on some machines,
-the screen just turn black when Linux boot, either during installation
-or on first boot from the hard disk. I've seen it once in a while the
-last few years, but only recently understood the cause. I've seen it
-on HP laptops, and on my latest acquaintance the Packard Bell laptop.
-The reason seem to be in the wiring of some laptops. The system to
-control the screen background light is inverted, so when Linux try to
-turn the brightness fully on, it end up turning it off instead. I do
-not know which Linux drivers are affected, but this post is about the
-i915 driver used by the
-<a href="http://www.linlap.com/packard_bell_easynote_lv">Packard Bell
-EasyNote LV</a>, Thinkpad X40 and many other laptops.</p>
-
-<p>The problem can be worked around two ways. Either by adding
-i915.invert_brightness=1 as a kernel option, or by adding a file in
-/etc/modprobe.d/ to tell modprobe to add the invert_brightness=1
-option when it load the i915 kernel module. On Debian and Ubuntu, it
-can be done by running these commands as root:</p>
-
-<pre>
-echo options i915 invert_brightness=1 | tee /etc/modprobe.d/i915.conf
-update-initramfs -u -k all
-</pre>
-
-<p>Since March 2012 there is
-<a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=4dca20efb1a9c2efefc28ad2867e5d6c3f5e1955">a
-mechanism in the Linux kernel</a> to tell the i915 driver which
-hardware have this problem, and get the driver to invert the
-brightness setting automatically. To use it, one need to add a row in
-<a href="http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/gpu/drm/i915/intel_display.c">the
-intel_quirks array</a> in the driver source
-<tt>drivers/gpu/drm/i915/intel_display.c</tt> (look for "<tt>static
-struct intel_quirk intel_quirks</tt>"), specifying the PCI device
-number (vendor number 8086 is assumed) and subdevice vendor and device
-number.</p>
-
-<p>My Packard Bell EasyNote LV got this output from <tt>lspci
--vvnn</tt> for the video card in question:</p>
-
-<p><pre>
-00:02.0 VGA compatible controller [0300]: Intel Corporation \
- 3rd Gen Core processor Graphics Controller [8086:0156] \
- (rev 09) (prog-if 00 [VGA controller])
- Subsystem: Acer Incorporated [ALI] Device [1025:0688]
- Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- \
- ParErr- Stepping- SE RR- FastB2B- DisINTx+
- Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- \
- <TAbort- <MAbort->SERR- <PERR- INTx-
- Latency: 0
- Interrupt: pin A routed to IRQ 42
- Region 0: Memory at c2000000 (64-bit, non-prefetchable) [size=4M]
- Region 2: Memory at b0000000 (64-bit, prefetchable) [size=256M]
- Region 4: I/O ports at 4000 [size=64]
- Expansion ROM at <unassigned> [disabled]
- Capabilities: <access denied>
- Kernel driver in use: i915
-</pre></p>
-
-<p>The resulting intel_quirks entry would then look like this:</p>
-
-<p><pre>
-struct intel_quirk intel_quirks[] = {
- ...
- /* Packard Bell EasyNote LV11HC needs invert brightness quirk */
- { 0x0156, 0x1025, 0x0688, quirk_invert_brightness },
- ...
-}
-</pre></p>
-
-<p>According to the kernel module instructions (as seen using
-<tt>modinfo i915</tt>), information about hardware needing the
-invert_brightness flag should be sent to the
-<a href="http://lists.freedesktop.org/mailman/listinfo/dri-devel">dri-devel
-(at) lists.freedesktop.org</a> mailing list to reach the kernel
-developers. But my email about the laptop sent 2013-06-03 have not
-yet shown up in
-<a href="http://lists.freedesktop.org/archives/dri-devel/2013-June/thread.html">the
-web archive for the mailing list</a>, so I suspect they do not accept
-emails from non-subscribers. Because of this, I sent my patch also to
-the Debian bug tracking system instead as
-<a href="http://bugs.debian.org/710938">BTS report #710938</a>, to make
-sure the patch is not lost.</p>
-
-<p>Unfortunately, it is not enough to fix the kernel to get Laptops
-with this problem working properly with Linux. If you use Gnome, your
-worries should be over at this point. But if you use KDE, there is
-something in KDE ignoring the invert_brightness setting and turning on
-the screen during login. I've reported it to Debian as
-<a href="http://bugs.debian.org/711237">BTS report #711237</a>, and
-have no idea yet how to figure out exactly what subsystem is doing
-this. Perhaps you can help? Perhaps you know what the Gnome
-developers did to handle this, and this can give a clue to the KDE
-developers? Or you know where in KDE the screen brightness is changed
-during login? If so, please update the BTS report (or get in touch if
-you do not know how to update BTS).</p>
-</div>
- <div class="tags">
-
-
- Tags: <a href="http://people.skolelinux.org/pere/blog/tags/debian">debian</a>, <a href="http://people.skolelinux.org/pere/blog/tags/english">english</a>.
-
-
- </div>
- </div>
- <div class="padding"></div>
-
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