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6 <title>Petter Reinholdtsen: Automatically locate and install required firmware packages on Debian (Isenkram 0.4)</title>
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14 <h1>
15 <a href="http://people.skolelinux.org/pere/blog/">Petter Reinholdtsen</a>
16
17 </h1>
18
19 </div>
20
21
22 <div class="entry">
23 <div class="title">Automatically locate and install required firmware packages on Debian (Isenkram 0.4)</div>
24 <div class="date">25th June 2013</div>
25 <div class="body"><p>It annoys me when the computer fail to do automatically what it is
26 perfectly capable of, and I have to do it manually to get things
27 working. One such task is to find out what firmware packages are
28 needed to get the hardware on my computer working. Most often this
29 affect the wifi card, but some times it even affect the RAID
30 controller or the ethernet card. Today I pushed version 0.4 of the
31 <a href="http://packages.qa.debian.org/isenkram">Isenkram package</a>
32 including a new script isenkram-autoinstall-firmware handling the
33 process of asking all the loaded kernel modules what firmware files
34 they want, find debian packages providing these files and install the
35 debian packages. Here is a test run on my laptop:</p>
36
37 <p><pre>
38 # isenkram-autoinstall-firmware
39 info: kernel drivers requested extra firmware: ipw2200-bss.fw ipw2200-ibss.fw ipw2200-sniffer.fw
40 info: fetching http://http.debian.net/debian/dists/squeeze/Contents-i386.gz
41 info: locating packages with the requested firmware files
42 info: Updating APT sources after adding non-free APT source
43 info: trying to install firmware-ipw2x00
44 firmware-ipw2x00
45 firmware-ipw2x00
46 Preconfiguring packages ...
47 Selecting previously deselected package firmware-ipw2x00.
48 (Reading database ... 259727 files and directories currently installed.)
49 Unpacking firmware-ipw2x00 (from .../firmware-ipw2x00_0.28+squeeze1_all.deb) ...
50 Setting up firmware-ipw2x00 (0.28+squeeze1) ...
51 #
52 </pre></p>
53
54 <p>When all the requested firmware is present, a simple message is
55 printed instead:</p>
56
57 <p><pre>
58 # isenkram-autoinstall-firmware
59 info: did not find any firmware files requested by loaded kernel modules. exiting
60 #
61 </pre></p>
62
63 <p>It could use some polish, but it is already working well and saving
64 me some time when setting up new machines. :)</p>
65
66 <p>So, how does it work? It look at the set of currently loaded
67 kernel modules, and look up each one of them using modinfo, to find
68 the firmware files listed in the module meta-information. Next, it
69 download the Contents file from a nearby APT mirror, and search for
70 the firmware files in this file to locate the package with the
71 requested firmware file. If the package is in the non-free section, a
72 non-free APT source is added and the package is installed using
73 <tt>apt-get install</tt>. The end result is a slightly better working
74 machine.</p>
75
76 <p>I hope someone find time to implement a more polished version of
77 this script as part of the hw-detect debian-installer module, to
78 finally fix <a href="http://bugs.debian.org/655507">BTS report
79 #655507</a>. There really is no need to insert USB sticks with
80 firmware during a PXE install when the packages already are available
81 from the nearby Debian mirror.</p>
82 </div>
83
84 <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>, <a href="http://people.skolelinux.org/pere/blog/tags/isenkram">isenkram</a>.</div>
85
86
87 </div>
88
89
90
91
92 <div id="sidebar">
93
94
95
96 <h2>Archive</h2>
97 <ul>
98
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209 </ul></li>
210
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295
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297
298 <li>2010
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300
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318
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320
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322
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324
325 </ul></li>
326
327 <li>2009
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329
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331
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349
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351
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353
354 </ul></li>
355
356 <li>2008
357 <ul>
358
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360
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362
363 </ul></li>
364
365 </ul>
366
367
368
369 <h2>Tags</h2>
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470 <li><a href="http://people.skolelinux.org/pere/blog/tags/standard">standard (55)</a></li>
471
472 <li><a href="http://people.skolelinux.org/pere/blog/tags/stavekontroll">stavekontroll (6)</a></li>
473
474 <li><a href="http://people.skolelinux.org/pere/blog/tags/stortinget">stortinget (12)</a></li>
475
476 <li><a href="http://people.skolelinux.org/pere/blog/tags/surveillance">surveillance (52)</a></li>
477
478 <li><a href="http://people.skolelinux.org/pere/blog/tags/sysadmin">sysadmin (4)</a></li>
479
480 <li><a href="http://people.skolelinux.org/pere/blog/tags/usenix">usenix (2)</a></li>
481
482 <li><a href="http://people.skolelinux.org/pere/blog/tags/valg">valg (9)</a></li>
483
484 <li><a href="http://people.skolelinux.org/pere/blog/tags/video">video (59)</a></li>
485
486 <li><a href="http://people.skolelinux.org/pere/blog/tags/vitenskap">vitenskap (4)</a></li>
487
488 <li><a href="http://people.skolelinux.org/pere/blog/tags/web">web (40)</a></li>
489
490 </ul>
491
492
493 </div>
494 <p style="text-align: right">
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