1420 laptop. Thanks, you saved a week of my life!
"Neutrion" wrote:
> Dell ships its notebook computers with the ability to monitor the input
> jack turned off. This means that you can't hear an audio signal routed
> through the mic or line-in jack even though you can record the audio and
> hear it when you play back the recording. An edit in the Windows
> Registry will enable monitoring and let you hear the audio in real time.
> There are 3 different sets of instructions below, sorted by operating
> system and audio chip:
> Models with Windows XP and a Sigmatel STAC 975x Audio Chip
> Models with Windows XP and a Sigmatel STAC 92xxHD Audio Chip
> Models with Windows Vista and Sigmatel STAC 92xxHD Audio Chip
> =========================================================================== ==================
> Models with Windows XP and a Sigmatel STAC97 Audio Chip
> This first set of instructions is only for these and similar models
> with the Sigmatel STAC97xx audio chip running Windows XP :
> Inspirons 1100, 1150, 1200, 2200, 2600, 2650, 5100, 5150, 5160, 6000,
> 8500, 8600, 9100, 9200, 9300, 300m, 500m, 510m, 600m, 700m, 710m,
> XPS/XPS M170, XPS gen2 etc.
> Latitudes D400, D410, D500, D505, D510, D600, D610, D800, D810 etc.
> Precision Mobile Workstations M20, M60, M70 or any others with the
> Sigmatel STAC97xx chip and Windows XP.
> On these models running XP, monitoring can be restored by editing the
> Registry subkey DisableMicFromPlayback.
> [It is wise to create a System Restore point before editing the
> Registry. To create a new Restore Point go to Start/Help &
> Support/System Restore and tick 'Create a restore point'. Even better is
> to save a backup copy of the Registry by using its 'Export' utility.]
> 1. Go to Start menu and click on Run. Type 'regedit' without quotes and
> click OK to open the Registry.
> 2. At the top of the list, highlight My Computer.
> 3. Under the Edit menu, select Find.
> 4. Type in 'DisableMicFromPlayback' without quotes and click 'find
> next'.
> 5. Highlight DisableMicFromPlayback. Right click on it and select
> Modify.
> 6. Highlight 01 and change to 00. Click OK.
> 7. Optional (but 8600 users should do this) find "EnablePoPBypass" and
> set the value to 00.
> 8. Optional (but 600 & 6000 should do this) find "DisableMicSelect" and
> set the value to 00.
> 9. Exit the Registry and restart the computer.
> Next, configure the system mixer:
> 1. Open Volume Control by right clicking on the speaker icon on the
> taskbar, or go to Start/Control Panel/ Sound & Audio Devices
> Properties/Advanced (button).
> 2. Under the Options menu, select Properties.
> 3. Under 'show the following volume controls' check the box next to
> Microphone. Click OK.
> 4. A mic control appears in the Volume Control. Make sure the mute box
> is unchecked.
> 5. If your external audio source (a stereo or tv tuner etc that you
> have connected to the mic jack) has a way to control its volume level,
> turn it down to control excessive input volume.
> (Thanks to forum member dilleyo who figured this out, and to jk79 who
> later clarified and explained it to me in terms I could understand. I
> have put it into this step-by-step format for those of us who are not
> familiar with editing the Registry.) This is the direct Registry path to
> the key:
> Computer\HKEY_LOCAL_MACHINE\System\ControlSet001\Control\Class\{4D36E96C-E3 25-11CE-BFC1-08002BE10318}\0005\Settings.
> =========================================================================== ======================
> Models with Windows XP and a Sigmatel STAC 92xxHD Audio Chip
> The following set of instructions is only for these and similar models
> with the Sigmatel 92xxHD audio chip running Windows XP :
> Inspirons B120, B130/1300, 6400/E1505, 9400/E1705, E1405/640m, XPS
> M140/630m, 1420, 1520, 1720
> Latitude D420, D520, D620, D820, etc. and any others with the Sigmatel
> 92xx HD chip and Windows XP.
> On these models running XP, monitoring can be restored by editing the
> Registry subkey EnableInputMonitor.
> [It is wise to create a System Restore point before editing the
> Registry! To create a new Restore Point go to Start/Help &
> Support/System Restore and tick 'Create a restore point'. Even better is
> to save a backup copy of the Registry by using its 'Export' utility.]
> 1. Go to the Start menu and click on Run. Type 'regedit' without quotes
> and click OK to open the Registry.
> 2. At the top of the list, highlight My Computer.
> 3. Under the Edit menu, select Find.
> 4. Type in 'EnableInputMonitor' without quotes and click 'find next'.
> 5. Highlight EnableInputMonitor. Right click on it and select Modify.
> 6. Highlight 00 and change to 01. Click OK.
> 7. Repeat "find next" (F3) several more times and keep changing values
> to 01 until the "EnableInputMonitor"'s coming up are of the proper
> value.
> 8. Find a key named "EnableIntSpkrMute" and change its value from 01 to
> 00.
> 9. Exit the Registry and restart the computer.
> Next, configure the system mixer:
> 1. Open Volume Control by right clicking on the speaker icon on the
> taskbar, or go to Start/Control Panel/ Sound & Audio Devices
> Properties/Advanced (button).
> 2. Under the Options menu, select Properties.
> 3.Under 'show the following volume controls' check the box next to
> Input Monitor. Click OK.
> 4. Make sure the mute box is unchecked. Unfortunately the slider itself
> will be frozen in place and won't control the outputted volume.
> (Thanks to forum members emann15 and The Performing Flea for figuring
> this out. I have put it into this step-by-step format for those of us
> who are not familiar with editing the Registry). This is the direct
> Registry path to the key:
> HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96C-E325-11CE-B FC1-08002BE10318}\0005\Settings\filter\Rear
> =========================================================================== ======================
> Models with Windows Vista and a Sigmatel STAC 92xxHD Audio Chip
> This set of instructions is only for models with the Sigmatel 92xxHD
> audio chip running Vista (see the above section for the partial list of
> models with 92xx chips). This Vista edit is known to work but might not
> work for all of the models on the list .
> On the models with a 92xxHD chip, monitoring can be restored by editing
> the Registry subkey EnableInputMonitor; however this value is not
> included in the Registry of Windows Vista operating system and so you
> must type it in.
> [It is just good common sense to create a System Restore point before
> editing the Registry. To create a new Restore Point go to Start/Help &
> Support/System Restore and tick 'Create a restore point'. Even better is
> to save a backup copy of the Registry by using its 'Export' utility.]
> 1. Go to the Start menu and click on Run.
> 2. Type 'regedit' without quotes and click OK to open the Registry.
> 3. Using the + signs in the left pane, navigate through the registry to
> get to this location:
> HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96C-E325-11CE-B FC1-08002BE10318}\0000\Settings\filter\SpeakerHp
> 4. Click on the key SpeakerHP to select it. (Some systems seem to lack
> this key. In that case do this at 'Settings'.)
> 5. In the right pane, right click and select New > Binary Value.
> 6. Type 'EnableInputMonitor' without quotes and then press Enter.
> 7. Right click on the new name and select 'Modify'.
> 8. In the 'Value data' box, add 01 to the existing 0000 to make it 0000
> 01, then click OK.
> 9. Exit the Registry and restart the computer.
> 10. After restart, enable input monitor in Audio Properties.
> (Right click your speaker in program tray. Click Playback devices.
> Right click on Speakers/Headphones and click properties. Click on levels
> tab. You will now see a box saying input monitor. Click the speaker
> picture to unmute it.)
> (Thanks to DellCommunity forum members ethan_hines, fuzzy34, and chef
> moore for figuring this out.)
> --
> Neutrion
> ------------------------------------------------------------------------
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