On Tue, Dec 17, 2002, A.J. Aranyosi <[EMAIL PROTECTED]> wrote: > I've recently picked up a Dell Dimension 8250, and I'm having some strange > USB problems in Linux (Gentoo). Specifically, whenever I insert either > the uhci or usb-uhci module, my PS/2 keyboard freezes up. If I log in > remotely I can see that the module initialized the usb mouse properly, but > removing the module doesn't free up the keyboard. The freezing happens > regardless of whether I have the mouse plugged in or not, and regardless > of whether I have legacy emulation support turned on or off in the bios. > I've tried it with vanilla 2.4.18, 2.4.20, and 2.5.51 kernels, and with > Gentoo's modified 2.4.19 kernel, all with the same results. The usb > chipsets (there are four of them, plus two usb 2.0 ones) are VIA UHCI (rev > 80) (the usb 2.0 ones are rev 81), and the motherboard chipset is an Intel > 82850. Any idea what might be causing this? I'm planning to poke around > in uhci.c to see if I can figure out where the freeze happens. Any > pointers on where to focus my search? Thanks,
That's interesting. The UHCI drivers turn off legacy emulation when they start because we take over the HC. I don't think either turn it back on when they are removed. Maybe the integration on these chips mix the USB and PS/2 functionality and there's some sort of hidden dependency or bug there? Can you try turning on legacy emulation again when the module is removed? Or if you're not comfortable enough doing that, I can hack up a patch. JE ------------------------------------------------------- This sf.net email is sponsored by: With Great Power, Comes Great Responsibility Learn to use your power at OSDN's High Performance Computing Channel http://hpc.devchannel.org/ _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
