X-Git-Url: http://pere.pagekite.me/gitweb/homepage.git/blobdiff_plain/923b4898cf78ff810ace3dac6439e6656f30d5f5..b499cfc7b5305b64be64438e7346c0d0e34c5c48:/blog/index.rss diff --git a/blog/index.rss b/blog/index.rss index 9cc4239159..d3746bfb94 100644 --- a/blog/index.rss +++ b/blog/index.rss @@ -7,7 +7,67 @@ -<<<<<<< index.rss + Ripping problematic DVDs using dvdbackup and genisoimage + http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html + http://people.skolelinux.org/pere/blog/Ripping_problematic_DVDs_using_dvdbackup_and_genisoimage.html + Sat, 17 Sep 2011 20:20:00 +0200 + <p>For convenience, I want to store copies of all my DVDs on my file +server. It allow me to save shelf space flat while still having my +movie collection easily available. It also make it possible to let +the kids see their favourite DVDs without wearing the physical copies +down. I prefer to store the DVDs as ISOs to keep the DVD menu and +subtitle options intact. It also ensure that the entire film is one +file on the disk. As this is for personal use, the ripping is +perfectly legal here in Norway.</p> + +<p>Normally I rip the DVDs using dd like this:</p> + +<blockquote><pre> +#!/bin/sh +# apt-get install lsdvd +title=$(lsdvd 2>/dev/null|awk '/Disc Title: / {print $3}') +dd if=/dev/dvd of=/storage/dvds/$title.iso bs=1M +</pre></blockquote> + +<p>But some DVDs give a input/output error when I read it, and I have +been looking for a better alternative. I have no idea why this I/O +error occur, but suspect my DVD drive, the Linux kernel driver or +something fishy with the DVDs in question. Or perhaps all three.</p> + +<p>Anyway, I believe I found a solution today using dvdbackup and +genisoimage. This script gave me a working ISO for a problematic +movie by first extracting the DVD file system and then re-packing it +back as an ISO. + +<blockquote><pre> +#!/bin/sh +# apt-get install lsdvd dvdbackup genisoimage +set -e +tmpdir=/storage/dvds/ +title=$(lsdvd 2>/dev/null|awk '/Disc Title: / {print $3}') +dvdbackup -i /dev/dvd -M -o $tmpdir -n$title +genisoimage -dvd-video -o $tmpdir/$title.iso $tmpdir/$title +rm -rf $tmpdir/$title +</pre></blockquote> + +<p>Anyone know of a better way available in Debian/Squeeze?</p> + +<p>Update 2011-09-18: I got a tip from Konstantin Khomoutov about the +readom program from the wodim package. It is specially written to +read optical media, and is called like this: <tt>readom dev=/dev/dvd +f=image.iso</tt>. It got 6 GB along with the problematic Cars DVD +before it failed, and failed right away with a Timmy Time DVD.</p> + +<p>Next, I got a tip from Bastian Blank about +<a href="http://bblank.thinkmo.de/blog/new-software-python-dvdvideo">his +program python-dvdvideo</a>, which seem to be just what I am looking +for. Tested it with my problematic Timmy Time DVD, and it succeeded +creating a ISO image. The git source built and installed just fine in +Squeeze, so I guess this will be my tool of choice in the future.</p> + + + + Kommunevalget må visst kontrollregnes på http://people.skolelinux.org/pere/blog/Kommunevalget_m__visst_kontrollregnes_p_.html http://people.skolelinux.org/pere/blog/Kommunevalget_m__visst_kontrollregnes_p_.html @@ -60,7 +120,7 @@ har vært innom, og sjekker så om løpenummeret som var på stemmeseddel opptellingen. Det kan på den måten være mulig å finne ut hva en person stemte. Hvis personen tar med seg en stemmeseddel fra alle partiene vil det fortsatt være mulig å finne ut hvilken av disse som -ble talt opp, slik at en ikke kan beskytte seg på det viset./p> +ble talt opp, slik at en ikke kan beskytte seg på det viset.</p> <p>Jeg er ikke sikker på hvor realistiske disse scenariene er i dag, dvs. hvilke andre prosedyrer som finnes i det norske valget for å @@ -85,70 +145,6 @@ programvare, og tilgjengelig fra -======= - Noen problemer rundt unikt nummererte stemmesedler i norske valg - http://people.skolelinux.org/pere/blog/Noen_problemer_rundt_unikt_nummererte_stemmesedler_i_norske_valg.html - http://people.skolelinux.org/pere/blog/Noen_problemer_rundt_unikt_nummererte_stemmesedler_i_norske_valg.html - Tue, 13 Sep 2011 16:00:00 +0200 - <p>I digi.no forklarer Ergo Group at gårdagens problemer med -opptelling av stemmesedler ved kommunevalget var at -<a href="http://www.digi.no/877938/ikke-programmeringsshy%3Bfeil-i-valgshy%3Bsystemet">noen -stemmesedler ikke hadde unike løpenummer</a>, og at programvaren som -ble brukt til telling ikke var laget for å håndtere dette. Jeg ble -svært overrasket over å lese at norske stemmesedler har unike -løpenummer, da min forståelse er at det går på bekostning av kravet om -hemmelige valg.</p> - -<p>Jeg har ikke god oversikt over hvilke problemer dette kan skape for -hemmelig valg, men her er noen scenarier som virker problematiske for -meg:</p> - -<p>(1) Jomar og Bertil avtaler at Bertil skal stemme på Lurepartiet -med stemmeseddelen som Bertil får utlevert fra Jomar, og belønnes for -dette. Stemmeseddelen har et unikt løpenummer, og ved opptellingen -sjekker Jomar at stemmeseddelen til Lurepartiet det unike løpenummeret -er med i stemmesedlene som ble talt opp før Bertil får sin belønning. -Unike løpenummer legger så vidt jeg kan forstå opp til kjøp og salg av -stemmer.</p> - -<p>(2) Jomar har også jobb som valgobservatør, og har gått igjennom -avlukkene og notert parti og løpenummer for alle stemmesedlene i -avlukkene. Har er i tillegg jevnlig innom og sjekker hvilke -løpenummer som er igjen i avlukkene (lar seg ganske raskt og enkelt -gjøre med en mobiltelefon med kamera som kan ta bilder av alle -løpenumrene). Når en person han vil vite hva stemmer kommer innom, -sammenligner han stemmesedler i avlukkene før og etter at vedkommende -har vært innom, og sjekker så om løpenummeret som var på stemmeseddel -(eller sedlene) som forsvant fra avlukket dukker opp under -opptellingen. Det kan på den måten være mulig å finne ut hva en -person stemte. Hvis personen tar med seg en stemmeseddel fra alle -partiene vil det fortsatt være mulig å finne ut hvilken av disse som -ble talt opp, slik at en ikke kan beskytte seg på det viset./p> - -<p>Jeg er ikke sikker på hvor realistiske disse scenariene er i dag, -dvs. hvilke andre prosedyrer som finnes i det norske valget for å -hindre dette.</p> - -<p>Det er dog ingen tvil om at det er lurt å nummerere stemmesedler -ved opptelling for å sikre at ingen forsvinner i prosessen med å telle -opp stemmer, men det må gjøres når stemmeurnene åpnes og ikke før -innbyggerne avgir sin stemme.</p> - -<p>Under Go Open 2009 presenterte Mitch Trachtenberg fra Humboldt -County, California hvordan -<a href="http://goopen2009.friprog.no/program/48-freevalg">de laget et -system som kontrolltalte stemmene</a> der ved hjelp av en scanner med -arkmater og fri programvare. Der ble stemmesedlene unikt nummerert -før scanning, og det er laget en CD med bilder av alle stemmesedler -slik at enhver kan kontrolltelle stemmene selv hvis de ønsker det. -Kanskje en ide også for Norge? Programvaren er så vidt jeg vet fri -programvare, og tilgjengelig fra -<a href="http://www.tevsystems.com/">hans nettsted</a></p> - - - - ->>>>>>> 1.377 Mer løgnpropaganda fra BSA http://people.skolelinux.org/pere/blog/Mer_l_gnpropaganda_fra_BSA.html http://people.skolelinux.org/pere/blog/Mer_l_gnpropaganda_fra_BSA.html @@ -433,129 +429,5 @@ og bør aldri glemmes.</p> - - What should start from /etc/rcS.d/ in Debian? - almost nothing - http://people.skolelinux.org/pere/blog/What_should_start_from__etc_rcS_d__in_Debian____almost_nothing.html - http://people.skolelinux.org/pere/blog/What_should_start_from__etc_rcS_d__in_Debian____almost_nothing.html - Sat, 30 Jul 2011 14:00:00 +0200 - <p>In the Debian boot system, several packages include scripts that -are started from /etc/rcS.d/. In fact, there is a bite more of them -than make sense, and this causes a few problems. What kind of -problems, you might ask. There are at least two problems. The first -is that it is not possible to recover a machine after switching to -runlevel 1. One need to actually reboot to get the machine back to -the expected state. The other is that single user boot will sometimes -run into problems because some of the subsystems are activated before -the root login is presented, causing problems when trying to recover a -machine from a problem in that subsystem. A minor additional point is -that moving more scripts out of rcS.d/ and into the other rc#.d/ -directories will increase the amount of scripts that can run in -parallel during boot, and thus decrease the boot time.</p> - -<p>So, which scripts should start from rcS.d/. In short, only the -scripts that _have_ to execute before the root login prompt is -presented during a single user boot should go there. Everything else -should go into the numeric runlevels. This means things like -lm-sensors, fuse and x11-common should not run from rcS.d, but from -the numeric runlevels. Today in Debian, there are around 115 init.d -scripts that are started from rcS.d/, and most of them should be moved -out. Do your package have one of them? Please help us make single -user and runlevel 1 better by moving it.</p> - -<p>Scripts setting up the screen, keyboard, system partitions -etc. should still be started from rcS.d/, but there is for example no -need to have the network enabled before the single user login prompt -is presented.</p> - -<p>As always, things are not so easy to fix as they sound. To keep -Debian systems working while scripts migrate and during upgrades, the -scripts need to be moved from rcS.d/ to rc2.d/ in reverse dependency -order, ie the scripts that nothing in rcS.d/ depend on can be moved, -and the next ones can only be moved when their dependencies have been -moved first. This migration must be done sequentially while we ensure -that the package system upgrade packages in the right order to keep -the system state correct. This will require some coordination when it -comes to network related packages, but most of the packages with -scripts that should migrate do not have anything in rcS.d/ depending -on them. Some packages have already been updated, like the sudo -package, while others are still left to do. I wish I had time to work -on this myself, but real live constrains make it unlikely that I will -find time to push this forward.</p> - - - -<<<<<<< index.rss -======= - - What is missing in the Debian desktop, or why my parents use Kubuntu - http://people.skolelinux.org/pere/blog/What_is_missing_in_the_Debian_desktop__or_why_my_parents_use_Kubuntu.html - http://people.skolelinux.org/pere/blog/What_is_missing_in_the_Debian_desktop__or_why_my_parents_use_Kubuntu.html - Fri, 29 Jul 2011 08:10:00 +0200 - <p>While at Debconf11, I have several times during discussions -mentioned the issues I believe should be improved in Debian for its -desktop to be useful for more people. The use case for this is my -parents, which are currently running Kubuntu which solve the -issues.</p> - -<p>I suspect these four missing features are not very hard to -implement. After all, they are present in Ubuntu, so if we wanted to -do this in Debian we would have a source.</p> - -<ol> - -<li><strong>Simple GUI based upgrade of packages.</strong> When there -are new packages available for upgrades, a icon in the KDE status bar -indicate this, and clicking on it will activate the simple upgrade -tool to handle it. I have no problem guiding both of my parents -through the process over the phone. If a kernel reboot is required, -this too is indicated by the status bars and the upgrade tool. Last -time I checked, nothing with the same features was working in KDE in -Debian.</li> - -<li><strong>Simple handling of missing Firefox browser -plugins.</strong> When the browser encounter a MIME type it do not -currently have a handler for, it will ask the user if the system -should search for a package that would add support for this MIME type, -and if the user say yes, the APT sources will be searched for packages -advertising the MIME type in their control file (visible in the -Packages file in the APT archive). If one or more packages are found, -it is a simple click of the mouse to add support for the missing mime -type. If the package require the user to accept some non-free -license, this is explained to the user. The entire process make it -more clear to the user why something do not work in the browser, and -make the chances higher for the user to blame the web page authors and -not the browser for any missing features.</li> - -<li><strong>Simple handling of missing multimedia codec/format -handlers.</strong> When the media players encounter a format or codec -it is not supporting, a dialog pop up asking the user if the system -should search for a package that would add support for it. This -happen with things like MP3, Windows Media or H.264. The selection -and installation procedure is very similar to the Firefox browser -plugin handling. This is as far as I know implemented using a -gstreamer hook. The end result is that the user easily get access to -the codecs that are present from the APT archives available, while -explaining more on why a given format is unsupported by Ubuntu.</li> - -<li><strong>Better browser handling of some MIME types.</strong> When -displaying a text/plain file in my Debian browser, it will propose to -start emacs to show it. If I remember correctly, when doing the same -in Kunbutu it show the file as a text file in the browser. At least I -know Opera will show text files within the browser. I much prefer the -latter behaviour.</li> - -</ol> - -<p>There are other nice features as well, like the simplified suite -upgrader, but given that I am the one mostly doing the dist-upgrade, -it do not matter much.</p> - -<p>I really hope we could get these features in place for the next -Debian release. It would require the coordinated effort of several -maintainers, but would make the end user experience a lot better.</p> - - - ->>>>>>> 1.377