Re: [<02282da7>] (usb_hcd_irq+0x0/0x4b) Disabling IRQ #5 - USB Devices

Re: [<02282da7>] (usb_hcd_irq+0x0/0x4b) Disabling IRQ #5 - USB Devices

[David Brownell]

Hi,

> My Questions:
> 
> How can I enable "USB Legacy Support" without errors?

As a rule, Linux will be happier without it.
Why do you want to enable it?


> How can I resolve the problem with the USB devices?

Have you tried adding "usb-handoff" to your
kernel command line?  That was added specifically
to help work around BIOS bugs like those you've
run into ...


> I've found via google some BIOS Bugs for "USB Legacy Support", but this
> bug occurs only on Windows XP (I don't found this for Linux). I tried
> allready to update my BIOS and now USB is disabled for all devices
> (Mouse, Printer, Scanner, USB-FlashMemory)

As a rule, if BIOS bugs affect XP I'd not be surprised
if to find them affecting Linux too.


> irq 12: nobody cared! (screaming interrupt?)
> irq 12: Please try booting with acpi=off and report a bug
> Stack pointer is garbage, not printing trace
> handlers:
> [<0223aede>] (i8042_interrupt+0x0/0x251)
> Disabling IRQ #12

That was interesting ... not directly related to USB,
looks like maybe the "legacy" support didn't work
very well either; maybe that's what the BIOS update
was solving.

- Dave

Re: [<02282da7>] (usb_hcd_irq+0x0/0x4b) Disabling IRQ #5 - USB Devices

[Florian Krammel]

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> > As a rule, Linux will be happier without it.
> > Why do you want to enable it?
> 

maybe I don't need it but I want a OS wich is 100% compatible to my
hardware and it's configuration.


> > Have you tried adding "usb-handoff" to your
> > kernel command line?  That was added specifically
> > to help work around BIOS bugs like those you've
> > run into ...
> 

"irqpoll" as boot parameter solved my problem. I can try your solution,
too.


> > As a rule, if BIOS bugs affect XP I'd not be surprised
> > if to find them affecting Linux too.

therefore I updated my BIOS allready ;)


> > That was interesting ... not directly related to USB,
> > looks like maybe the "legacy" support didn't work
> > very well either; maybe that's what the BIOS update
> > was solving.

this was not solved by the BIOS update. This takes only affect if the
mouse is not connected to the PS/2 port. 1st my mouse was connected with
the USB port and I connected it via an adapter to the PS/2 port, because
X wthout mouse is futile, and this problem was solved.

mfg
flo
-- 
Florian Krammel <florian_kr@gmx.de>

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