Re: [Xen-users] DVB tuner not working in PV guest

[Simon Hobson <linux@xxxxxxxxxxxxxxxx>]

At 21:00 +0100 23/7/11, I wrote:
> I'm trying to setup a new home server, and part one is getting a new 
> version of MythTV running. Host is Debian with Xen4.0.1 and kernel 
> 2.6.32-5-xen-amd64, PV guest is also Debian with kernel 
> 2.6.32-5-xen-amd64. I have a DVB-T tuner (HVR-1200, PCIe card) I am 
> trying to use in the guest with pciback.hide etc. The whole thing is 
> running on an HP Proliant Microserver I bought while HP had a 
> mail-in rebate going.
> If I boot the host without Xen, I can access the card with dvbtune 
> and it lists the channels in a multiplex :
> <snip>
> And the card shows up in the boot log :
> > 02:00.0 Multimedia video controller: Conexant Systems, Inc. CX23885 
> > PCI Video and Audio Decoder (rev 02)
> I've hidden the card from Dom0 by adding 
> "xen-pciback.hide=(02:00.0)" to the grub config.
> When I boot the guest, I can see it's tuner card
> > eddi kernel: [   25.348011] cx23885[0]/0: found at 0000:00:00.0, 
> > rev: 2, irq: 16, latency: 0, mmio: 0xfe600000
> But if I try to access it with dvbtune, it can't detect any channels :
>
> > # dvbtune -f 801833000 -i
> > Using DVB card "NXP TDA10048HN DVB-T"
> > tuning DVB-T (in United Kingdom) to 801833000 Hz
> > polling....
> > Getting frontend event
> > FE_STATUS:
> > polling....
> > Getting frontend event
> > FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> > FE_HAS_SYNC
> > Bit error rate: 1965
> > Signal strength: 61680
> > SNR: 131
> > FE_STATUS: FE_HAS_SIGNAL FE_HAS_LOCK FE_HAS_CARRIER FE_HAS_VITERBI 
> > FE_HAS_SYNC
> > <transponder type="T" freq="801833000">
> > Nothing to read from fd_pat
> > Nothing to read from fd_sdt
> > </transponder>
No ideas ?
Any suggestions where to look or further information I need to provide ?

--
Simon Hobson

Visit http://www.magpiesnestpublishing.co.uk/ for books by acclaimed
author Gladys Hobson. Novels - poetry - short stories - ideal as
Christmas stocking fillers. Some available as e-books.

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