<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8">
<META NAME="GENERATOR" CONTENT="GtkHTML/3.32.2">
</HEAD>
<BODY>
The plot thickens: found the MS USB mouse is at issue...<BR>
<BR>
- The low speed USB device using ehci_hcd and address 3 is the Microsoft 3-Button Mouse as / class/ input/ input0 on usb-0000:00:1d.0-1.1<BR>
<BR>
- dmesg indicates: PCI: cache line size of 32 is not supported by device 0000:00:1d.0<BR>
<BR>
- I can see the USB 2.0, and EHCI 1.00 driver started for this device as well<BR>
<BR>
Observation of the mouse shows power blinking-off periodically. Keyboard (USB) acts like it has sticking keys periodically. I suspect this will goof-up most anything attached to the USB bus.<BR>
<BR>
I have been trying some kernel parameters to grub.conf but no improvement thus far to the mouse. (Only got rid of an issue concerning mtrr). Another hint in this is that when you set the BIOS for multi-monitor support the problem goes away. (Yes, I know we could set that and leave it but that's not the point. Need to find the fix for this other than a workaround like 6.x or the BIOS setting).<BR>
<BR>
TIA.......Rich<BR>
<BR>
<BR>
<BLOCKQUOTE TYPE=CITE>
<BLOCKQUOTE TYPE=CITE>
Chipset is the Intel C206 (PCH). Datasheet for the SHB is here: <A HREF="http://www.trentontechnology.com/downloads/datasheets/trenton_tsb7053_productdatasheet.pdf">http://www.trentontechnology.com/downloads/datasheets/trenton_tsb7053_productdatasheet.pdf</A> <BR>
</BLOCKQUOTE>
</BLOCKQUOTE>
<BR>
<BLOCKQUOTE TYPE=CITE>
<BLOCKQUOTE TYPE=CITE>
<BLOCKQUOTE TYPE=CITE>
<BLOCKQUOTE>
I have come across a problem with RHEL 5.x family where I am getting the following output in dmesg:<BR>
<BR>
"usb 2-1.1: reset low speed USB device using ehci_hcd and address 3"<BR>
<BR>
My USB attached keyboard and mouse do not function properly (lag and inaccurate output). It looks like there is an issue in the system support of USB but it only seems to exist in 5.x family. Once tested in 6.x it all works. (Testing with both CentOS and Scientific Linux - live and installed samples)<BR>
<BR>
I am going through the debug output manually but thought I'd shoot this over here for a more experienced perspective from those with grayer beards than I...<BR>
<BR>
TIA........Rich
</BLOCKQUOTE>
</BLOCKQUOTE>
</BLOCKQUOTE>
</BLOCKQUOTE>
</BODY>
</HTML>