USB connection lost after reboot
By kcw573 - usenet poster
Hi,
I 've recently bought a Targus mini notebook optical mouse (PAUM010E).
When I connect the device with my notebook (BenQ JoyBook A33E), windows
detect the mouse without any problem.
If I reboot the pc and leave the mouse in the usb connector, the mouse
doesn't react any more.
In the 'device manager' I find an entry 'Unknown device' under the
'USB-Controller' node.
When I disconnect the mouse, the 'Unknown device' entry disappears. If I
then reconnect the mouse, everything works perfect.
I've already re-installed the USB-Controllers but nothing changed.
I also tried the mouse on other notebooks:
- notebook with XP Pro: no problems
- notebook with XP Home: same problem (connection lost after reboot).
It seems this only happens with Windows XP Home.
Does anyone have a solution for this strange behavior?
Kind Regards
Frederik
I 've recently bought a Targus mini notebook optical mouse (PAUM010E).
When I connect the device with my notebook (BenQ JoyBook A33E), windows
detect the mouse without any problem.
If I reboot the pc and leave the mouse in the usb connector, the mouse
doesn't react any more.
In the 'device manager' I find an entry 'Unknown device' under the
'USB-Controller' node.
When I disconnect the mouse, the 'Unknown device' entry disappears. If I
then reconnect the mouse, everything works perfect.
I've already re-installed the USB-Controllers but nothing changed.
I also tried the mouse on other notebooks:
- notebook with XP Pro: no problems
- notebook with XP Home: same problem (connection lost after reboot).
It seems this only happens with Windows XP Home.
Does anyone have a solution for this strange behavior?
Kind Regards
Frederik
Solution #3
posted on Aug 01, 2007
jessie25 - usenet poster
Rank:
Apprentice
Rating: 0%, 0 votes
ApprenticeRating: 0%, 0 votes
Disconnect and reconnect as you've been doing. For whatever reason, your
laptop is not enumerating USB devices perfectly during a startup. Might
check for a BIOS update from the manufacturer. Only update if the package
description addresses a problem that you're having.
Side note: Something I've done on my portable is to disable "sleep" to USB
devices. Drains a bit of battery life but USB devices stay live instead of
disappearing. Look for power management settings in a device's properties
(while in Device Manager). If available, you'll see a Power Management tab
where you can customize.
--
Sharon F
MS-MVP ~ Windows Shell/User
laptop is not enumerating USB devices perfectly during a startup. Might
check for a BIOS update from the manufacturer. Only update if the package
description addresses a problem that you're having.
Side note: Something I've done on my portable is to disable "sleep" to USB
devices. Drains a bit of battery life but USB devices stay live instead of
disappearing. Look for power management settings in a device's properties
(while in Device Manager). If available, you'll see a Power Management tab
where you can customize.
--
Sharon F
MS-MVP ~ Windows Shell/User
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