https://www.thinkwiki.org/w/api.php?action=feedcontributions&feedformat=atom&user=JkirschbaumThinkWiki - User contributions [en]2026-05-09T01:00:19ZUser contributionsMediaWiki 1.31.12https://www.thinkwiki.org/w/index.php?title=ThinkPad_56K_Modem_(MDC-1.5)&diff=27583ThinkPad 56K Modem (MDC-1.5)2007-01-09T07:46:58Z<p>Jkirschbaum: added R60(e) to the list</p>
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=== ThinkPad 56K Modem (MDC-1.5) ===<br />
This is a AC97 Modem Adapter that is installed in a [[CDC slot]].<br />
=== Features ===<br />
* Chipset: Conexant<br />
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=== IBM Partnumbers ===<br />
IBM FRU PN: 39T0495<br />
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=== Linux driver ===<br />
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See [[Conexant HSF modem drivers]].<br />
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=== ThinkPads this card may be found in ===<br />
* {{R60}}, {{R60e}}<br />
* {{Z60m}}, {{Z60t}}<br />
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[[Category:Components]]</div>Jkirschbaumhttps://www.thinkwiki.org/w/index.php?title=AD1981HD&diff=27127AD1981HD2006-12-19T09:13:54Z<p>Jkirschbaum: /* ThinkPads this chip may be found in */</p>
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=== AD1981HD ===<br />
This is a Analog Devices High-Definition Audio 1.0 controller<br />
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=== Features ===<br />
* Chipset: AD1981HD<br />
* Interface: HD Audio 1.0<br />
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=== Linux ALSA driver ===<br />
==== Installation on Debian GNU/Linux ====<br />
The AD1981HD installs by default in Debian. To get it to work type 'alsaconf' on the command line as the root user.<br />
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{{ cmdroot| alsaconf }}<br />
{{HINT|To become root, type su at the command line.}}<br />
==== Problems ====<br />
* As of kernel 2.6.17, some users report a missing master volume control (e.g., with the T60p and Z60m), as described in this thread: http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg17089.html<br />
: As of ALSA 1.0.13 the master volume has returned. Download the latest modules from your distrobution to fix this problem. Otherwise as a temporary fix add model=hp to the snd-hda-intel module option. This will return the master volume control to your control.<br />
{{HINT|If you use Debian, edit /etc/modprobe.d/sound to change ALSA module options. }}<br />
* If you experience crackling noises, this can be avoided by adding the position_fix=2 optional argument for the module.<br />
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* If you have problems recording audio, try selecting "Front Mic" as the capture device.<br />
{{ NOTE | There have been reported problems using arecord while debugging, it's recommended to instead use Audacity. }}<br />
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* According to a bug in the BIOS, the modem disables the audio device too. If you are having problems with your soundcard and have disabled your modem, try re-enabling it. On some systems disabling the modem results in fixing some problems, so if you haven't disabled the modem, try it. On the T60p model, the in-kernel ALSA system will report "azx_get_response timeout"; re-enabling the modem fixed this issue and brought audio back.<br />
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=== ThinkPads this chip may be found in ===<br />
* {{R60}}, {{R60e}}<br />
* {{T60}}, {{T60p}}<br />
* {{X60}}, {{X60s}}<br />
* {{Z60m}}, {{Z60t}}<br />
* {{Z61m}}<br />
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=== Datasheets ===<br />
* [http://www.analog.com/en/prod/0,2877,AD1981HD,00.html Analog Devices page for the AD1981HD]<br />
* [http://www.analog.com/UploadedFiles/Data_Sheets/338118709AD1981HD_0.pdf Direct link to the AD1981HD datasheet]<br />
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[[Category:Components]]</div>Jkirschbaum