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ijacobs
Punch Card
Posts: 7
Registered: ‎01-17-2008
Location: Melbourne, Australia
Views: 4,719
Message 1 of 37

T420 sound card problem causing Skype crash

I reently acquired a T420 with Windows 7 Professional installed.  I used Skype for a week, using the on-board speakers and mic, without difficulty.  I then upgraded to Windows 7 Ultimate and since the upgrade Skype has crashed when using the on-board speakers and mic, giving with the message: "Can't access your sound card".  However, when I use a Plantronics Voyager 520 headset with USB dongle, Skype works perfectly every time. 

 

I have tried the following actions, all without success, in an attempt to overcome the problem:

 

  • Uninstalled Skype, rebooted, reinstalled Skype;
  • Checked for updated sound card drivers;
  • Run various diagnostics, including Lenovo's 'Test a Device' and 'Device manager alerts', all of which highlight no problem with the devices;
  • Checked via Windows that the devices are in fact operating correctly.  Both the speakers and mic respond correctly and are able to play back music, etc. and record sounds.

Anyone have any ideas as to what is going on and how to overcome the problem?

 

Regards,

 

Ian

Former Employee
Posts: 3,823
Registered: ‎07-11-2010
Location: Malaysia
Views: 4,697
Message 2 of 37

Re: T420 sound card problem causing Skype crash

Hello ijacobs,

You mentioned that when you were using Skype with Windows 7 Pro it was fine until you upgraded to Win 7 Ulti. Are both the OS in 64bit?

Also could you try running TVSU and see if there are any additional drivers which you might left out?

Btw I think you are the first owner of a T420 here in the forum ... Nice!

//JameZ
ijacobs
Punch Card
Posts: 7
Registered: ‎01-17-2008
Location: Melbourne, Australia
Views: 4,695
Message 3 of 37

Re: T420 sound card problem causing Skype crash

Hi Jamez,

 

Thanks for your response and suggestions.  I've run TVSU and no additional drivers are required.  BTW, both Professional and Ultimate are 64 bit.  Apart from the sound card/Skype issue everything else is running as normal. 

 

Re being the first T420 owner in the forum, it's a bit of a dubious honour given that I've got a problem!  To be serious though, apart from the sound card problem I'm pretty happy with the machine.  It's a major leap forward from my R61. 

 

Cheers,

 

Ian

PhilippA
Paper Tape
Posts: 5
Registered: ‎03-31-2011
Location: Leipzig, Germany
Views: 4,683
Message 4 of 37

Re: T420 sound card problem causing Skype crash

Hi All,

 

I've the same Problems with my T420 but Skype doesn't crash - it only losts the connection to the soundcard and a message appears that the soundcard can't be detected. This happens 1-2 seconds after I started the call. If I hang up I can start a new call and I hear the dailing tone. A few seconds after the partner accepts the call skype mentiones that the soundcard cannot be detected. W7 64-bit pro. TVSU reports no additional drivers or updates.

 

Bye,

 

Phil.

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 4,664
Message 5 of 37

Re: T420 sound card problem causing Skype crash

I'd try uninstalling and reinstalling the audio driver package.

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
PhilippA
Paper Tape
Posts: 5
Registered: ‎03-31-2011
Location: Leipzig, Germany
Views: 4,653
Message 6 of 37

Re: T420 sound card problem causing Skype crash

I've tested your suggestion without success... :-(

ijacobs
Punch Card
Posts: 7
Registered: ‎01-17-2008
Location: Melbourne, Australia
Views: 4,643
Message 7 of 37

Re: T420 sound card problem causing Skype crash

To clarify my first posting re the sound card problem, the problem is exactly as described by Phil, i.e. Skype doesn't actually crash but it disconnects with the message "Can't access your sound card".  Apologies if I mislead the forum. 

 

Regards,

 

Ian

Guru
Posts: 9,598
Registered: ‎12-26-2009
Location: CA
Views: 4,641
Message 8 of 37

Re: T420 sound card problem causing Skype crash

What if you rollback to an earlier version of Skype? Or a beta version? Do you have any third-party audio enhancement programs installed?

W520: 2960XM, Q2000M @ 1091/1380, 32GB RAM, 500GB&750GB HDD & 500GB SSD, FHD&MB168B+
X61T: L7500, 4GB RAM, 500GB HDD, XGA screen, Ultrabase
W550s: 5600U, K620M at 1164/1281, 16GB RAM, 512GB SSD, 3K touchscreen
X200s: SL9400, 6GB RAM, 64GB SD card, WXGA+ screen
TPT1: 1839-23U
Former Employee
Posts: 3,823
Registered: ‎07-11-2010
Location: Malaysia
Views: 4,625
Message 9 of 37

Re: T420 sound card problem causing Skype crash

@ijacobs,

After doing a quick search on the error which you have. I found many discussion around other forums as well.

Could you check if there are any "API Access Control" in Skype.

Skype -> Option -> Advance -> Manage other programs access to Skype" -> Manage API access control and see if there are any item there. If there is, disable it and try Skype again.

//JameZ
ijacobs
Punch Card
Posts: 7
Registered: ‎01-17-2008
Location: Melbourne, Australia
Views: 4,620
Message 10 of 37

Re: T420 sound card problem causing Skype crash

Hi JameZ.  Thanks for your efforts to solve this problem.  I did as suggested and denied all programs access to Skype and rebooted.  Unfortunately it didn't resolve the problem.  Back to square 1!

 

Regards,

 

Ian

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