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FromThomas Schlichter <>
SubjectRe: [2.5.70-mm8] NETDEV WATCHDOG: eth0: transmit timed out
DateWed, 11 Jun 2003 15:16:44 +0200
Hi,

it seems that whether the netdevice nor the 8139too parts of the kernel cause 
my problems but there must have been some bad changes to the interrupt 
routing or the IO-APIC parts.

I don't have -mm7 handy currently (but at the moment it compiles again) but I 
attached the contents of /proc/interrupts of 2.4.10 (the system I currently 
run) and 2.5.70-mm8 again.

As you can see there, the -mm8 code does not assign more than 16 interrupt 
sinks but the 2.4.10 (and if I remember correctly -mm7, too) has 22. Perhaps 
even more problematic is that -mm8 seems not to use level-triggered 
interrupts...!

I could try to revert some IRQ or APIC changes if someone could tell me which 
Changeset may have caused that...

Best reagrds
  Thomas Schlichter
           CPU0       
  0:     184641    IO-APIC-edge  timer
  1:       2037    IO-APIC-edge  keyboard
  2:          0          XT-PIC  cascade
  4:          2    IO-APIC-edge  serial
  8:          2    IO-APIC-edge  rtc
 12:      78366    IO-APIC-edge  PS/2 Mouse
 14:     188581    IO-APIC-edge  ide0
 15:          6    IO-APIC-edge  ide1
 16:     180617   IO-APIC-level  nvidia
 17:      14155   IO-APIC-level  eth0
 18:      82091   IO-APIC-level  EMU10K1
 19:     457792   IO-APIC-level  fcpci
 21:          0   IO-APIC-level  usb-uhci, usb-uhci, usb-uhci
NMI:          0 
LOC:     184592 
ERR:          0
MIS:          0
           CPU0       
  0:      52599    IO-APIC-edge  timer
  1:       1075    IO-APIC-edge  i8042
  2:          0          XT-PIC  cascade
  4:         11    IO-APIC-edge  serial
  5:          0    IO-APIC-edge  uhci-hcd
  8:          2    IO-APIC-edge  rtc
  9:          0    IO-APIC-edge  acpi
 10:          0    IO-APIC-edge  ehci-hcd
 11:          0    IO-APIC-edge  eth0, EMU10K1, bttv0, uhci-hcd, uhci-hcd
 12:         79    IO-APIC-edge  i8042
 14:       6217    IO-APIC-edge  ide0
 15:         10    IO-APIC-edge  ide1
NMI:          0 
LOC:      52557 
ERR:          0
MIS:          0
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