[mythtvnz] Second USB DVB-T tuner causes high load

[Dylan Hall]

I have a very odd problem, I have purchased two of the ASUS usb tuners
mentioned below in Stephen's post. I got the first, and was so impressed
I decided to get a second. This is where the problem starts...

When I connect the second tuner the load average on the machine jumps to
1 even when all the daemons etc have been shut down and the machine is
as idle as it's possible to get a linux box.

I have VirtualBox running on the machine hosting a copy of ubuntu 9.04
server. With 1 tuner connected it's all good. Connect the second tuner
and the ping times to this virtual machine jump from <1ms to 20-60ms
(varying all over the place).

Despite the problems above, the second tuner appears to work fine.

The server is a Core 2 Duo E6600 2.4Ghz, 6GB Ram, running ubuntu 9.04
server 32 bit, kernel version 2.6.28-15-server-52.

I'm using the 32bit version of ubuntu because I'm testing SageTV for
linux which only ships with 32bit binaries. I have PAE enabled to get
access to the full 6GB of ram.

I'm unsure how to progress from here. 

Any ideas anyone? seen something similar?

Should I log a bug with the ununtu people or try and track down the devs
for the DVB driver and log a bug with them?

Thanks for your thoughts,

Dylan


On Sun, 2009-08-23 at 15:05 +1200, Stephen Worthington wrote:

> Now that Prime is on DVB-T, I am feeling the need for a third tuner to
> prevent clashes.  This one is very cheap and says it has Linux
> support:
> 
> http://www.asus.com/Product.aspx?P_ID=7KqG3FwyUeVB41W2&content=specifications
> http://www.ascent.co.nz/productspecification.aspx?ItemID=372738
> 
> Has anyone used it?  Any other suggestions?
> 
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