mtest Posted July 23, 2010 Share Posted July 23, 2010 Hi all, I've just managed to have the sound working on my Samsung N130 (HDA ALC269) but I'm facing a problem of larsen effect (mic / speaker feedback loop). The feedback occurs from the moment the VoodooHDA kext is being loaded until voodoohdahelper (which is set to automatically run at startup) restores my settings. I would like to know if there could be a fix or workaround to prevent this feedback, such as disabling the mic when the kext is loaded or postponing the order in which the kext are loaded to load the VoodooHDA.kext at the last moment. Any idea/suggestion would be appreciated. I'm using VoodooHDA 2.6.1 Snow L. Thank you very much. EDIT: I tried to edit my Info.plist to add a key <key>iGain</key> <string>0</string> But it did not help. I also tried to disable the Mic by adding the following to the Info.plist <key>MixerValues</key> <dict> <key>iMix</key> <string>30</string> </dict> <key>NodesToPatch</key> <array> <dict> <key>Codec</key> <integer>0</integer> <key>Node</key> <integer>25</integer> <key>Config</key> <string>0x40f000f0</string> <!-- Internal Mic [DISABLED] --> </dict> </array> <key>VoodooHDAVerboseLevel</key> <integer>1</integer> ...but it did not help either. Do I need to do anything specific to have the modifications done to the Info.plist taken into account ? dump.txt Link to comment Share on other sites More sharing options...
mtest Posted July 24, 2010 Author Share Posted July 24, 2010 Ooops, issue "solved"... As mentioned here (search engines rulez ) http://www.tonymacx86.com/viewtopic.php?f=...it=feedback+mic Simply downgraded to VoodooHDA 2.6.0 and no more problem. It seems that in version 2.6.1 both the playback and recording levels are boosted to the maximum when the driver is loaded. Sorry for the background noise Link to comment Share on other sites More sharing options...
sulkyfellow Posted July 26, 2010 Share Posted July 26, 2010 Hi, I got exactly the same problem but downgrading to voodoohda 2.6.0 didn't fix the problem. Did you download a patched version ? Did you remove any other kext ? Thanks ! Link to comment Share on other sites More sharing options...
mtest Posted July 26, 2010 Author Share Posted July 26, 2010 Hi, Yes, I'm sure I'm running the version 2.6.0. I got it from here: http://www.projectosx.com/forum/index.php?...post&p=6642 Make sure to remove all the other audio drivers from your /System/Library/Extensions folder, copy the VoodooHDA.kext 2.6 in /S/L/E, chown -R root:wheel, chmod -R 755, run Update Extra and then reboot, that did the trick for me. Look into the file /System/Library/Extensions/VoodooHDA.kext/Content/Info.plist, the version of the driver is written in there (in this case it should read 0.2.6). Good luck. PS: Are you using a Samsung N130 ? Link to comment Share on other sites More sharing options...
sulkyfellow Posted July 26, 2010 Share Posted July 26, 2010 Indeed I am using a N130 and the problem was fixed by your great instructions Just got to get the prefpane and helper working again and it'll all be fine. Thanks again for assisting, it is much nicer not to have to boot with earphones plugged in ! Link to comment Share on other sites More sharing options...
mtest Posted July 27, 2010 Author Share Posted July 27, 2010 Good, I'm happy to hear that. If by any chance you manage to have the VGA port working or to fix the black screen on wake issue don't forget to update me ! :mellow: Link to comment Share on other sites More sharing options...
sulkyfellow Posted July 28, 2010 Share Posted July 28, 2010 Sure ! I'll give it a try. I also am currently trying to fix the black screen on wake. I'll see what I can find. Link to comment Share on other sites More sharing options...
mtest Posted July 28, 2010 Author Share Posted July 28, 2010 See my post here: http://www.insanelymac.com/forum/index.php...466&st=100# ...the blank screen is a known problem, I could think many reports on this but no solution so far. Link to comment Share on other sites More sharing options...
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