[mythtv-users] Hauppauge 2250 causes dropped network packets

[John Kasunich]

On Sun, 28 Mar 2010 23:07 -0500, "Keith Pyle" <kpyle at austin.rr.com>
wrote:
> mythtv-users-request at mythtv.org wrote:
> > Built this PC a couple months ago.
> >
> > Motherboard is Asus M4A77D
> > Network is the onboard NIC:
> > 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
> > RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
> >
> > Networking works fine when the Hauppauge 2250 PCI Express tuner
> > card is not in the machine.
> >
> > When I installed the tuner card, I started getting 5-15% dropped
> > packets.  The packets are being dropped in the very first hop,
> > from the PC to my DSL router/modem.  Other PCs on the same network
> > never drop packets, and removing the tuner card makes this PC start
> > working fine again.
> >
> > The only connection I can see between tuner and NIC is that when
> > the tuner is not present, the NIC is at PCI address 02:00.0, but
> > when the tuner is installed, it takes the 02:00.0 address, and
> > the NIC winds up at 03:00.0.
> >   
> Check the output of 'lspci -v' when you have the 2250 installed and see 
> if the 2250 and the NIC share the same IRQ.  It may be an interrupt 
> sharing problem.  As an earlier poster suggested, moving the 2250 to 
> another slot may cure this (by moving the 2250 to another interrupt).
> 

They don't share the same interrupt.  Tuner is on IRQ 11, NIC is on
IRQ 28.  Switching to the other x1 PCIe slot didn't change anything.

John
-- 
  John Kasunich
  jmkasunich at fastmail.fm