[vdr] Re: Nova-s USB problems

[Patrick Rother <krd-vdr@gulu.net>]

Hello.

(sorry for the delayed response...)

On Thu, Apr 29, 2004 at 11:43:54PM +0200, hm@seneca.muc.de wrote:
> Patrick Rother <krd-vdr@gulu.net> wrote:
> > It seems the USB device only uses USB 1.1 and this isn't enough
> > bandwidth for the data needed.
> 
> 11 MBit/s is enough, technically. The reason is likely another one.
> You may want to check IRQ assignments and such.
> 
> Please keep us posted about the success - I'm interested in such a
> device as well because my VIA EPIA Board has only one PCI slot...

I just upgraded to kernel 2.6.6 with some better optimizations, and
tested it with the newest dvd drivers from CVS.

My /proc/interupts looks like this:

$ cat /proc/interrupts
           CPU0
  0:     681547    IO-APIC-edge  timer
  2:          0          XT-PIC  cascade
  4:        198    IO-APIC-edge  serial
  8:          0    IO-APIC-edge  rtc
 14:       8729    IO-APIC-edge  ide0
 15:       8149    IO-APIC-edge  ide1
 16:          0   IO-APIC-level  uhci_hcd
 17:      47208   IO-APIC-level  saa7146 (1)
 18:    1384240   IO-APIC-level  uhci_hcd, saa7146 (0)
 19:          0   IO-APIC-level  uhci_hcd
 20:      43487   IO-APIC-level  eth0, ohci1394
 23:          0   IO-APIC-level  ehci_hcd
NMI:          0
LOC:     681307
ERR:          0
MIS:          0
$

It seems not to matter to which uhci_hcd I connect the external DVB
device, there alwas appear errors like these:

May 10 20:17:35 vdr kernel: ttusb_process_muxpack: muxpack with incorrect checksum, ignoring
May 10 20:17:35 vdr kernel: ttusb_process_frame: lost sync.
May 10 20:17:35 vdr kernel: ttusb_process_muxpack: cc discontinuity (5198 frames missing)
May 10 20:17:36 vdr kernel: ttusb_process_muxpack: muxpack with incorrect checksum, ignoring
May 10 20:17:36 vdr kernel: ttusb_process_frame: lost sync.
May 10 20:17:36 vdr kernel: ttusb_process_muxpack: cc discontinuity (5208 frames missing)
May 10 20:17:37 vdr kernel: ttusb_process_muxpack: muxpack with incorrect checksum, ignoring
May 10 20:17:37 vdr kernel: ttusb_process_frame: lost sync.
May 10 20:17:37 vdr kernel: ttusb_process_muxpack: cc discontinuity (5177 frames missing)
May 10 20:17:38 vdr kernel: ttusb_process_muxpack: muxpack with incorrect checksum, ignoring
May 10 20:17:38 vdr kernel: ttusb_process_frame: lost sync.
May 10 20:17:38 vdr kernel: ttusb_process_muxpack: cc discontinuity (5298 frames missing)
May 10 20:17:39 vdr kernel: ttusb_process_muxpack: muxpack with incorrect checksum, ignoring

and the recording get completely defective.

Please suggest what I could do to get this running.

Thank you.


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