Salut
A priori je ne vois pas plus d'erreur que ça dans le /var/log/messages
voici la transcription de la partie ou je m'amuse à brancher débrancher une souris sur un port USB :
Oct 5 19:33:58 geniebio kernel: usb 4-2: new low speed USB device using uhci_hcd and address 3
Oct 5 19:33:58 geniebio kernel: usb 4-2: configuration #1 chosen from 1 choice
Oct 5 19:33:58 geniebio kernel: input: Logitech Optical USB Mouse as /class/input/input7
Oct 5 19:33:58 geniebio kernel: input: USB HID v1.10 Mouse [Logitech Optical USB Mouse] on usb-0000:00:1d.3-2
Oct 5 19:33:59 geniebio kernel: [drm] Initialized drm 1.1.0 20060810
Oct 5 19:33:59 geniebio kernel: [drm] Initialized i915 1.6.0 20060119 on minor 0
Oct 5 19:34:06 geniebio kernel: usb 4-2: USB disconnect, address 3
Oct 5 19:34:09 geniebio kernel: usb 4-1: new low speed USB device using uhci_hcd and address 4
Oct 5 19:34:09 geniebio kernel: usb 4-1: configuration #1 chosen from 1 choice
Oct 5 19:34:09 geniebio kernel: input: Logitech Optical USB Mouse as /class/input/input8
Oct 5 19:34:09 geniebio kernel: input: USB HID v1.10 Mouse [Logitech Optical USB Mouse] on usb-0000:00:1d.3-1
Oct 5 19:34:13 geniebio kernel: usb 4-1: USB disconnect, address 4
Oct 5 19:34:16 geniebio kernel: usb 4-2: new low speed USB device using uhci_hcd and address 5
Oct 5 19:34:16 geniebio kernel: usb 4-2: configuration #1 chosen from 1 choice
Oct 5 19:34:16 geniebio kernel: input: Logitech Optical USB Mouse as /class/input/input9
Oct 5 19:34:16 geniebio kernel: input: USB HID v1.10 Mouse [Logitech Optical USB Mouse] on usb-0000:00:1d.3-2
Oct 5 19:34:26 geniebio kernel: usb 4-2: USB disconnect, address 5
Oct 5 19:35:56 geniebio ntpd[2054]: synchronized to 194.146.225.219, stratum 2
Oct 5 19:35:56 geniebio ntpd[2054]: kernel time sync status change 0001
Oct 5 19:37:46 geniebio ntpd[2054]: Listening on interface #6 virbr0, fe80::200:ff:fe00:0#123 Enabled
Oct 5 19:37:46 geniebio ntpd[2054]: Listening on interface #7 virbr0, 192.168.122.1#123 Enabled
Oct 5 19:45:32 geniebio ntpd[2054]: synchronized to 88.191.14.223, stratum 2
Oct 5 19:48:01 geniebio ntpd[2054]: synchronized to 194.146.225.219, stratum 2
Oct 5 19:54:07 geniebio ntpd[2054]: synchronized to 88.191.14.223, stratum 2
Oct 5 19:59:52 geniebio ntpd[2054]: synchronized to 194.146.225.219, stratum 2
A priori je ne vois pas plus d'erreur que cela...
Je me posait la question de Gnome qui peut-etre "bug" mais bon ?