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 How to debug a directpath problem 
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Joined: Sun Dec 26, 2010 5:34 pm
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Post How to debug a directpath problem
I have a tv card set up for vt-d. The vm can see the device and the drivers install fine. All looks fine including scanning for channels. I can see the signal strength and signal quality. Problem is, there are no channels found, the same device works in my workstation just not via passthrough. Is there anyway of debugging what the problem is or maybe some options to try before classing this device as incompatible with directpath?

cheers


Mon Mar 21, 2011 1:23 am
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Joined: Mon Mar 16, 2009 10:13 pm
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Post Re: How to debug a directpath problem
i'd take a look through the vmware.log file for the VM and also this - http://vmware.com/files/pdf/techpaper/V ... h-host.pdf - particularly the reset method. Is the PCI bus shared between this TV tuner and another device?

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Mon Mar 21, 2011 2:22 pm
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Joined: Sun Dec 26, 2010 5:34 pm
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Post Re: How to debug a directpath problem
Dave.Mishchenko wrote:
i'd take a look through the vmware.log file for the VM and also this - http://vmware.com/files/pdf/techpaper/V ... h-host.pdf - particularly the reset method. Is the PCI bus shared between this TV tuner and another device?


Thanks for the reply,

I currently have
ONE: 1 x PCI dual dvt-t card (working 100%)
TWO: 1 x PCI dvb-s2 card (was almost working, could see signal quality but no stations found until i installed the card below, now i dont get any signal)
THREE: 1 x PCI-Express Dual dvb-s and Dual dvb-t card.

The PCI bus is shared, so all slots must be used by 1 VM (i think).
I cannot see anything in any log (which I have attached).
I have tried using the d0d3 reset for the 2nd card and also the IOAPIC mode. But nothing seems to work.

When I get a bit more time, im going to try the following

1. windows xp (seems to be less fussy from what ive read than win7)
2. Trying 1 device at a time.

Do I need to restart esxi when i change the reset mode?

cheers


Attachments:
File comment: TV Server config
TV Server.vmx [4.08 KiB]
Downloaded 220 times
File comment: TV server log
vmware.log [157.07 KiB]
Downloaded 232 times
Tue Mar 22, 2011 3:49 pm
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Joined: Mon Mar 16, 2009 10:13 pm
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Post Re: How to debug a directpath problem
XP would be worth a try. It may be an issue with a shared PCI bus.

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Dave Mishchenko
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Tue Mar 22, 2011 11:43 pm
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Joined: Tue Nov 17, 2009 6:10 am
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Post Re: How to debug a directpath problem
Hi smurfster,

If you like to use DVB-x tuners in virtual machines: use only USB 2.0 devices.

It's simple, it's fast, it's great!
Forget PCI and/or PCIe cards!

Regards.


Wed Mar 23, 2011 1:26 am
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Joined: Sun Dec 26, 2010 5:34 pm
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Post Re: How to debug a directpath problem
danisoto wrote:
Hi smurfster,

If you like to use DVB-x tuners in virtual machines: use only USB 2.0 devices.

It's simple, it's fast, it's great!
Forget PCI and/or PCIe cards!

Regards.


Ok, ive ordered a TBS Q-Box DVB-S2 USB to try. Do I need to purchase a PCI USB card and set it up for passthrough?


Thu Mar 24, 2011 12:21 am
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Joined: Mon Mar 16, 2009 10:13 pm
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Post Re: How to debug a directpath problem
ESXi 4.1 and higher supports USB passthrough.

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Dave Mishchenko
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Thu Mar 24, 2011 12:51 am
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Joined: Tue Nov 17, 2009 6:10 am
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Post Re: How to debug a directpath problem
smurfster wrote:
Do I need to purchase a PCI USB card and set it up for passthrough?

No, you can connect ANY device using ANY free USB connection (inclusive using USB hubs!).

I have a virtual machine with 3 USB DVB-T tuners (2 single, 1 dual)... more cheaper than PCI cards! :lol: :lol: :lol:
You only need to "connect" physical USB devices to a virtual machine.

Regards!


Thu Mar 24, 2011 2:52 am
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Joined: Sun Dec 26, 2010 5:34 pm
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Post Re: How to debug a directpath problem
I thought as much. thanks for confirming fellas


Thu Mar 24, 2011 4:11 am
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Joined: Sun Mar 27, 2011 11:30 am
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Post Re: How to debug a directpath problem
And i'm having problems enabling VT-d on my ASUS server-board..


I'm kind'a jealous reading all this..


Sun Mar 27, 2011 11:53 am
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