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SubjectRe: Kernel 2.6.12 + IO-APIC + uhci_hcd = Trouble
Date
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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