Linux PnP?

[sooqing]

From what I know, its totally possible for users to plug out their USB devices like mouses, modems, etc.. when I am in the working environment.. however, if I were to plug out any USB devices I have, the system hangs immediately.. even if I am in the single user mode (init 1)

Is this common?

Been suffering from this problem for a long time, I note that it affects Fedora Core 1, 2, 3, Slackware 10 and the lastest Ubuntu.

Never experienced this when using Windows XP and x86 Solaris.

[eddylai]

I had tested USB CD-RW and it was okay in FC3.

[brahms]

You are correct - hotplugging should work with no problems. That said, some hardware is buggy - mainly because some manufacturers are, shall we say, unhelpful in cooperating and sticking to the USB standards. If you're having problems with many USB devices that would seem to suggest a problem with your motherboard USB chipset.

Do you know what USB chipset you are using?
Do you get any useful information in /var/log/messages?

You could try unloading the USB kernel modules prior to unplugging a device: as root -
modprobe -r uhci_hcd
modprobe -r ehci_hcd
And have a read of http://www.linux-usb.org/ to see if there are any issues mentioned there relevant to your situation.

[jasonfireup]

I try some USB mouse , USB keyboard , can work in FC2 , FC3