04-12-2012 02:36 PM
I have a T410S that about 14 months old. Until recently, the built in speakers had worked fine - but about a week ago, they started randomly cutting out/muting on their own. If I change the volume using either the Windows volume control or the physical controls (or if I kill the "audiodg.exe" process), the speakers start playing sound again, but then they cut out again within 30-60 seconds. Initially this only seemed to occur with audio playback from Flash embedded in webpages, but now it happens with any audio playback regardless of what software I'm using it - VLC, Windows Media Player, Audacity, etc.
It only seems to occur with audio playback through the built-in speakers - it doesn't occur with audio playback through the headphone jack (which I'd be using instead, if the headphone output weren't unbearably noisy, but that's another story).
I've tried everything I could think of. I've changed the "When Windows detects communication activity" setting to "Do Nothing" - no change. I've fully removed the drivers (with the "Delete Driver Files" option in device manager) and then let Windows detect/reinstall from Windows update - no change. I tried fully removing the drivers, and then downloading & installing the latest driver from Lenovo's support page - no change. And last I tried a registry tweak that supposedly disables the headphone jack sensing/automatic muting of the speakers when headphones are plugged in - and you guessed it, no change.
Has anyone else had this problem and found a solution?
04-12-2012 03:27 PM
04-12-2012 04:54 PM - edited 04-12-2012 04:56 PM
Thanks. I've downloaded and run that program, but I'm not familiar with it - results would indicate that latency is the issue?
It appears to be reporting latencies of 1200 µs, with intermittent drops to around 100 µs.
EDIT: right after posting, I plugged in my ethernet cable and noticed latency briefly jumped all the way up to around 7400 µs.
04-12-2012 09:44 PM
04-13-2012 09:42 AM
I ran the Lenovo updater & installed all of the available drivers that it listed, and it didn't resolve the issue with the speakers - any audio playback still cuts out after (at most) 90 seconds.
The driver updates do seem to have fixed the latency issue (getting hovering around 100-150 µs according to dpclat.exe, but it doesn't appear to have made any difference with the audio issue.