[plug] USB questions further info needed

[Steve Grasso]

Hi Laurie,

Some things to check/try based on the messages you reported, which may 
indicate a hardware IRQ conflict:

1. Do the following:

cat /proc/interrupts

and see if there are two devices sharing the same interrupt (IRQ7). Maybe the 
parallel port and the video card.

2. If an offending device is in a PCI slot, try swapping it into a different 
PCI slot. In the case of an AGP video card, that's a bit hard to do, so try a 
different AGP video card, or try a PCI video card in a PCI slot.

3. Check that all your ribbon cabling (hard disks, CD, floppy drive) are in 
good repair and plugged in properly.

4. Original dmesg boot messages will have scrolled off the dmesg ring buffer 
since the machine was last booted. The following:

less /var/log/dmesg

should give you the boot messages as they were recorded to dmesg when the 
system was last booted. You may find some extra clues in there.

5. This error message was somtimes in the past attributed to a harmless 
kernel twinge. Try Googling on the exact error message.

HTH,
Steve

On Fri, 2 Jan 2004 12:01, laurie anderson wrote:
>  Good morning Yu all,
>
>  Did a 'dmesg back on Dec 17 subject USB & kernel questions the last line
> was,
>
>  [...]
>  [drm:drm_init] *ERROR* Cannot initialize the agpgart module,
>  spurious 8259A interupt: IRQ7.
>  [...]
>
>  Repeated 'dmesg' since the new kernel(2.4.22-1-k7) was installation but
> the message is still the same from 'dmesg'
>
>  [...]
>  parport0: PC-style at 0x378 (0x778)<6>eth0: No 21041 10baset link beat,
>  Media switched to 10base2.
>   [PCSPP,TRISTATE]
>  parport0: irg 7 detected
>  lp0: using parport0 (polling).
>  [drm:drm_init] *error* Cannot initialize the agpgart module,
>  spurious 8259A interupt: IRQ7.
>  [...]
>
>  there is no further output beyond this point from 'dmesg'
>  therefore the output related to USB is missing, it is also reasonable to
>  assume that OS cannot see USB ports.
>
>  The question becomes what is  'agpgart module', what package does it
> belong to (need to fix this before being able to proceed further), where do
> we find information on it etc ???
>
>  Someone out there must be able to direct us/simply have the answer.
>
>  Comeback & thanks.
>
>  Laurie
>
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