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lockup on USB event kernel 2.4.20

DISCUSSION Jocelyn Mayer 2 participants 2 messages Jun 12, 2003 – Jun 13, 2003

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Quoted 6 lines

My SO's computer works fine under redhat 8 which runs on a 2.4.18 kernel, however on redhat 9 with a 2.4.20 kernel it locks up. Also, redhat upgraded their kernel to 2.4.20 for rh 8 as well and I saw the same behavior.

Quoted 7 lines

Everything works fine until she moves her mouse which is connected to the USB, that locks the system.

Is this a known problem? Any idea how I can debug it?

Thanks
Jay

Hi,

Is your controler a UHCI one ?
If yes, try to connect your mouse via a hub if it's directly connected to your computer.
There seem to be an issue with (rare) devices connected directly to UHCI controlers.
I can easily lock UHCI based computers with an ATMEL Wifi device this way.

Regards.

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Jocelyn Mayer <[email protected]>
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Quoted 1 line · Jocelyn Mayer

Is your controler a UHCI one ?

Appears to be using the OHCI driver, so no.

Quoted 2 lines

If yes, try to connect your mouse via a hub if it's directly connected to your computer.

Tried it anyway, no joy.

Any other ideas? Something I could debug would be good. There's a definate correlation between moving the mouse and locking up the machine. Presumably it is missing an interrupt or something like that.

Jay

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