Red Hat Bugzilla – Bug 79222
(USB)mouse freezes under moderate to heavy disk usage
Last modified: 2007-04-18 12:48:55 EDT
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Description of problem:
Intel P4 laptop with internal touchpad on /dev/psaux and an external usb mouse
on /dev/mouse. The usb mouse is the corepointer and the touchpad uses
the "SendCoreEvents" option in XF86Config-4. Both mice work fine, except under
moderate to heavcy disk usage, the external usb mouse freezes. The touchpad
still functions fine. I can reset the usb mouse by physically disconnecting
and then reconnecting it. No change if I use the touchpad as the corepointer.
Keyboard and screen are not affected in any way. Only the external usb mouse.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
2. use system as usual
3. do a disk intensive operation ... (i.e. make a big tarball, use GIMP with a
big image, etc.)
4. mouse will flicker / jump around and then freeze
5. disconnect external mouse and immediately reconnect
Actual Results: external mouse freezes. Keyboard, screen, touchpad, still
operate as usual. After disconnect/reconnect of external usb mouse, it
functions normally until the next freeze event.
Expected Results: No mouse freeze at all
Compaq EvoN800c Notebook
Intel P4 Mobility 1.7gHz
ATI Radeon Mobility Graphics Card (64MB RAM)
Sorry, didn't see this bug, taking now.
Please upgrade to 2.4.20-18.7 (or, for RHL 9 2.4.18-18.9), and verify
that it still fails.
If it fails, I'd like to see three things: output of dmesg, taken
after the failure (please don't drop it into comments box, bug attach instead),
/proc/interrupts and output of lspci (don't -vv it, or attach again).
upgraded to RH 9 three weeks ago. Both touchpad and usb mouse are 100%
opertional. USB mouse no longer freezes.
I have noticed a few other users that have had mouse freeze problems. One is at
Seems like the guy a URL above has APM issues. I don't think it's relevant.