I had Ubuntu 9.10 x64 Desktop installed on a nettop I have (that I normally run headless), and yesterday I decided to take the plunge and update to 10.04.
So, I plugged in a screen and usb mouse/keyboard, booted up and set to work.
It was 1am, and it was telling me it had 3hrs left to install all the new packages, so I unplugged the screen and usb mouse/keyboard, left the box running, and went to bed.
This evening, I plugged it all back in again to check progress. It's asking if I want to remove obsolete packages. I do, but neither the mouse nor keyboard work!
I can access the box via SSH like I normally do; is there any way I can re-enable the keyboard from there?
I'm reluctant to restart the box (via ssh) mid-way through such a complicated upgrade.
Thanks for any help!
lsusb (with wireless mouse/keyboard receiver unplugged):
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
lsusb (with wireless mouse/keyboard receiver attached):
Bus 004 Device 005: ID 045e:005f Microsoft Corp. Wireless MultiMedia Keyboard
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
not sure about ubuntu, but you could try a hardware rescan with Kudzu.
did you try to restart udev?
$ sudo /etc/init.d/udev restart
On a desktop install, the keyboard and mouse are run by X.org, so you could try restarting X, which is done on a desktop install by restarting gdm. So
In the future use screen, so you will be able to detach session and attach via ssh.
@Answer above: If you restart GDM it will crash you X session.