Re: Kernel 2.6.12 + IO-APIC + uhci_hcd = Trouble

[Michel Bouissou <michel@bouissou.net>]

Le Mardi 12 Juillet 2005 19:03, Michel Bouissou a écrit :
>
> Okay, the patch applied easily and the kernel is now compiling. When
> installed, I'll try and boot it (and will use a PS/2 mouse instead of my
> current USB mouse, or should I rather try to plug my USB mouse to the
> ehci_hcd controller ?).
>
> How would you like me to boot ? With or without the "usb-handoff" option ?
> With or without the BIOS "USB mouse support" option ?

I've booted with the patched kernel in the following way:

- BIOS option for mouse support still off ;

- Kernel commandline:
kernel /vmlinuz-2.6.12-6mib7test root=/dev/evms/lv_racine ro 3 usb-handoff 
devfs=nomount noquiet vga=791

- USB mouse plugged to what I believe to be the USB 2.0 controller (according 
to the motherboard manual)

First thing I notice at boot is that "mouse doesn't work".

cat /proc/interrupts shows :
           CPU0       
  0:     208937    IO-APIC-edge  timer
  1:        334    IO-APIC-edge  i8042
  2:          0          XT-PIC  cascade
  4:        464    IO-APIC-edge  serial
  7:          3    IO-APIC-edge  parport0
 14:       1321    IO-APIC-edge  ide4
 15:       1330    IO-APIC-edge  ide5
 18:        822   IO-APIC-level  eth0, eth1
 19:      14157   IO-APIC-level  ide0, ide1, ide2, ide3, ehci_hcd:usb4
 21:      33962   IO-APIC-level  uhci_hcd:usb1, uhci_hcd:usb2, uhci_hcd:usb3
 22:          0   IO-APIC-level  VIA8233
NMI:          0 
LOC:     208855 
ERR:          0
MIS:          0


Looking at dmesg or /var/log/mesages shows a huge number of :
Jul 12 19:36:58 totor kernel: uhci_hcd 0000:00:10.2: IRQ, status = 0
Jul 12 19:36:58 totor kernel: uhci_hcd 0000:00:10.0: IRQ, status = 0
Jul 12 19:36:58 totor kernel: uhci_hcd 0000:00:10.1: IRQ, status = 0
Jul 12 19:36:58 totor kernel: uhci_hcd 0000:00:10.2: IRQ, status = 0

(3043 similar lines...)

...immediately at startup, then it stops complaining

The interesting thing is that I unplugged my USB mouse at 19:45 -- nothing 
happened, and plugged it back at 19:45:40, while looking at a "tail 
-f /var/log/messages"

And see what happened in the attached copy of my /var/log/messages for this 
session...

Doesn't mean anything to me ;-) but I hope it will be of some help for you...

Cheers.

-- 
Michel Bouissou <michel@bouissou.net> OpenPGP ID 0xDDE8AC6E

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