[mythtvnz] Pointers on how to track down machine lockup

[Wade Maxfield]

On 13/10/2010, at 9:22 AM, Solor Vox wrote:

> Well, if you had two cards in use at the same time, it may be a IRQ
> conflict.  Check /proc/interrupts and see if both the PVR and DVB-S cards
> are on different channels.

If it was a conflict, would it lock up every time I tried using all 3 cards simultaneously? In the past some of the lockups have occurred with no recordings in progress, and no recordings being played back either. And right now I have 4 DVB-S recordings ( 2 x 2 with multirec) and the PVR going.


I don't know exactly what I am looking for in /proc/interrupts, so this is the output:

localhost:~$ cat /proc/interrupts 
           CPU0       CPU1       CPU2       CPU3       CPU4       CPU5       CPU6       CPU7       
  0:         26          0          0   12350621          0          0          0          0   IO-APIC-edge      timer
  1:          0          0          0         10          0          0          0          0   IO-APIC-edge      i8042
  8:          0          0          0          0          0          0          0          0   IO-APIC-edge      rtc0
  9:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   acpi
 16:          0          0          0          0          2          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb3, nouveau, Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver
 17:          0          0          0          0          0          2          0          0   IO-APIC-fasteoi   ahci, ohci1394
 18:          0          0     636682          0          0          0    4153171        393   IO-APIC-fasteoi   ehci_hcd:usb1, uhci_hcd:usb5, uhci_hcd:usb8, pata_jmicron, Technisat/B2C2 FlexCop II/IIb/III Digital TV PCI Driver
 19:          0       1370          0    3019613          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb7, ivtv0
 21:      33274     133214       9528          0          0          0          0          0   IO-APIC-fasteoi   uhci_hcd:usb4
 22:          0          0        681          0          0          0          0          0   IO-APIC-fasteoi   HDA Intel
 23:          0          0          0          0          0          0          0          0   IO-APIC-fasteoi   ehci_hcd:usb2, uhci_hcd:usb6
 28:          0     214698          0          0          0        139          0          0   PCI-MSI-edge      ahci
 29:          0          0         76          0    3467240          0          0          0   PCI-MSI-edge      eth0
NMI:          0          0          0          0          0          0          0          0   Non-maskable interrupts
LOC:    1786223    1843956    1934031     223368    1146186     987758    1072089    1292633   Local timer interrupts
SPU:          0          0          0          0          0          0          0          0   Spurious interrupts
PMI:          0          0          0          0          0          0          0          0   Performance monitoring interrupts
PND:          0          0          0          0          0          0          0          0   Performance pending work
RES:       2953       2962       1637       1859       2403       1136       2521       1614   Rescheduling interrupts
CAL:       3371       3451       4051       4382        137        121        133        127   Function call interrupts
TLB:       4975       1252        946       1787       1437        560        584       1004   TLB shootdowns
TRM:          0          0          0          0          0          0          0          0   Thermal event interrupts
THR:          0          0          0          0          0          0          0          0   Threshold APIC interrupts
MCE:          0          0          0          0          0          0          0          0   Machine check exceptions
MCP:        159        159        159        159        159        159        159        159   Machine check polls
ERR:          7
MIS:          0



>  Might be worth trying to move one of the cards
> to a different slot.
> 

I have 3 PCI cards (2 x DVB-S, 1 PVR-350), and only 3 PCI slots. A bit limited on where to move things to.


> Are the tuner cards new?

No, they are the ones I took out of my previous backend (Athlon 64 X2 Skt939). It was running Mythdora 10.21 without issues, but was getting old & felt slow, and the motherboard had a noisy little fan on the chipset. So I upgraded by assembling the new Core i7 box.


>  And did you have blinking keyboard indicators
> before swapping PSU?

I didn't have a keyboard plugged in all the time before. I've left it plugged in now.


 - Wade