Wyse P25 audio cracks

[evanmaldegem]

Hi,

We just started a pilot to use Wyse P25 Zero Clients with Vmware View. Everything works smooth and fast except for the audio. When we watch a youtube movie or mkv movie the audio cracks and pops. Same when we listen to an MP3 and start dragging windows we have the same phenomenon. I guess it's an combination of movie and audio.

Our setup is:

ESX server: ESXi 5.1.0 HP Proliant BLade 460 Gen8 16CPU x 2.6 GHZ 128 GB Memory and FUSION I/O card

VM Horizon View 5.2

Golden Image: Windows 7 SP1 32-bit and we used the best practice document from EMC. Also installed the Teradici Audio driver. We give 2 CPU and 4GB to Linked Clones.

I also did a lot of tweaking with PCOIP settings in Group Policy like PCOIP MTU Size, Audio BW Limit PCOIP Session bandwidth etc etc. While I had some minor improvements, the audio cracking stays the same.

I used the PCOIP Network Monitor (SNMP) to look if bandwidth is a problem, but that doesnt seem to be the case.

Any help is greatly appreciated.

[admin]

This is a known issue, a slight regression from 5.0 - 5.1. You should see some improvement with the Teradici audio driver but it will still occur. If you roll back to an older version you should not see it. There are some fixes in the works as part of an upcoming maintenance release.

WP

[vincikb]

We have the exact same issue and I opened a ticket with Teradici support directly.  They sent me the 4.1 GA firmware for the P25 and while it improved the sound problem a bit its still there.  If we use a P20 or a software client everything works just perfectly.  To me I still feel like the P25 isn't fully baked as far as the firmware goes. 

[admin]

This is not specific to the P25. It does happen with our soft clients.  The window resize evanmaldegem mentioned is exactly how I found it internally.

WP

[vincikb]

So are you saying this will be fixed in View 5.x as a maintenance release?  Any idea when that will be out?  If we went to a View 4.6 environment we wouldn't have the audio problems?

[admin]

It should be really hard to repro this on 5.0 / 5.1 especially with the Teradici Audio driver. If you try hard under certain conditions you can do it on a single CPU VM. Seems to more frequently happen on 5.1.1 and 5.2. Improvements were made in perpetration for the next maintenance release. The exact date is not finalized.

WP

[vincikb]

We can reproduce it really easy using a WYSE P25 with View 5.2 and 1vCPU on the VM watching a YouTube video.  If we give the VM 2vCPU's its harder to notice or if we leave it with 1vCPU and use a WYSE P20 or a Windows Thin Client or desktop with the software client it won't happen at all.  I even tried following these other steps in this KB article but they still didn't help:  http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=204576...

So my question to you wponder is my Production environment is still running View 4.6.  I only have these issues in my test environment which is View 5.2  I haven't had any reports of the audio problem under View 4.6 so are you saying this audio issue wasn't present in View 4.6 but it started with View 5.x?  If that is so would it be better for me to stay on View 4.6 in Production and wait for the maintenance release to come out?  It would be bad if I upgraded now and then users start complaining about audio issues because all of our VDI's in Production have 1vCPU.  Thank You

[harry446]

I got the similar problem with P25 zero client (tera2) and I had fixed that

1.  download latest Teradici Virtual Audio driver

https://techsupport.teradici.com/link/portal/15134/15164/ArticleFolder/144/Teradici-Virtual-Audio-Dr...

2. install the audio driver in VM and reboot

try it, it works for me.