[ltp] Thinkcentre M51 USB hotplug issue

Dmitry E. Mikhailov linux-thinkpad@linux-thinkpad.org
Mon, 15 Nov 2010 00:00:34 +0500


On Sunday 14 November 2010 18:55, Nate Bargmann wrote:
> ThinkCentre M51

It's a Pentium4 on an Intel chipset.

ALL intel chipset P4 mobos this defect: insufficient ESD protection on 
Southbridge's USB ports. Intel is to blame.

It means that sooner or later when you insert a USB device, something bad 
happens:
1)USB controller damage - it works somewhat, but has problems
2)USB controller burnout - it's seen by the system, but the connected devices 
doesn't
3)Southbridge burnout - motherboard is dead.

You have the 1st. It's going to progress if you try to use MoBo's USB ports. 
Disable USB in BIOS and use your PCI controller.

Best regards,
	Dmitry.