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Attaching a PS/2 mouse and keyboard resolve the error but by only removing the device(s) that are causing the problem. That is not a solution as all USB have to be working. I have recommended that the OS be migrated to 6.x but don't know that this will be accepted. Another find was setting the BIOS to support multi-monitor mode (an interesting connection); the error is not induced. Only in single-monitor mode does the USB mouse/keyboard go bugger. So there is a BIOS connection here for resource allocation that interacts with EHCI driver (or USB driver) and the function of low-speed USB device(s). <BR>
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In the end, the mouse and keyboard are constantly powering-up and down. Looks like they fail and reinitialize; then fail; then initialize. Up, down, up down...sand-a-floor; side-to-side...you get my drift...<BR>
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On Fri, 2012-06-15 at 17:13 -0400, Jim Kinney wrote:<BR>
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Oh. good catch! I have not had the chance to look at "the piles" here<BR>
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So disconnecting the mouse will stop the failures?<BR>
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On Fri, Jun 15, 2012 at 5:09 PM, Rich Faulkner <<A HREF="mailto:rfaulkner@tux86.org">rfaulkner@tux86.org</A>> wrote:
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The plot thickens: found the MS USB mouse is at issue...<BR>
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- 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>
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- dmesg indicates: PCI: cache line size of 32 is not supported by device 0000:00:1d.0<BR>
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- I can see the USB 2.0, and EHCI 1.00 driver started for this device as well<BR>
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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>
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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>
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TIA.......Rich
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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>
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I have come across a problem with RHEL 5.x family where I am getting the following output in dmesg:<BR>
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"usb 2-1.1: reset low speed USB device using ehci_hcd and address 3"<BR>
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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>
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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>
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TIA........Rich
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-- <BR>
-- <BR>
James P. Kinney III<BR>
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Every time you stop a school, you will have to build a jail. What you gain at one end you lose at the other. It's like feeding a dog on his own tail. It won't fatten the dog.<BR>
- Speech 11/23/1900 Mark Twain<BR>
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