On Wed, 28 Feb 2007, Gordon Messmer wrote: > I originally filed a bug report with Red Hat about this issue almost a > year ago: > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=183454 > > When I was running FC4, I had no problems with my system. When I > started testing FC5, I started having problems with my Logitech optical > USB mouse. Originally, if the mouse was left idle, it would stop > working until I switched to a vt, out of X, and then back. With current > FC6 kernels, the mouse still has problems, but it normally just causes a > whole bunch of key repeats if I'm typing at the time (notably, the > keyboard is PS/2!).
It's hard to imagine what could cause that sort of interference between the mouse and the keyboard. Unless you're somehow triggering some sort of copy & paste mechanism... > This system has other quirks, too. It has USB ports on the front of the > case, but I can't use a USB memory stick in them unless I remove the > ehci_hcd module. The ports on the back of the system accept the memory > stick when ehci_hcd is still loaded. Problems like this are almost always caused by the hardware. In the case of the memory stick, you might find that the USB cabling inside the computer (connecting the front ports to the motherboard) isn't sufficiently high quality to use with EHCI. > I'm sure the problem isn't the mouse, since I can use it in my X40 and a > Dell Precision 380. What operating systems? > I don't know if the root of the problem is a bad > motherboard (Intel D845PEBT2, latest BIOS) or Linux, or the compiler... > I do know that if I use the latest kernel published for FC4 > (kernel-2.6.17-1.2142_FC4), the mouse still works right. If I use any > kernel published for a newer Fedora system, I get the reset message. Newer kernels detect and try to fix errors that the older kernels ignored. But when a device constantly gets errors, things don't work very well. > I saw this issue brought up on the list recently: > http://www.mail-archive.com/linux-usb-users@lists.sourceforge.net/msg17771.html > ...but I didn't see any resolution to the issue. > > Does anyone have any suggestions? Try plugging the mouse into a different port. Try using a different mouse. Somewhere I may have an old patch to cause the usbhid driver to ignore these errors, more or less like it used it to. I'll see if I can dig it out... Alan Stern ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
