Problems with jumping cursor
Information about the jumping mouse cursor problem, which occurs on some X41 tablets when CPU load is high.
Contents
Problem description
When CPU load reaches 100%, the mouse cursor stutters and jumps to the bottom / middle of the screen (in Windows, just above the task bar). Additionally, left clicks may be generated.
Diagnosing the problem
In windows, it is possible to reproduce the problem by opening the calculator and typing 999999!
If the machine is affected, it will quickly become unresponsive (cursor stutter) and the cursor will eventually jump above the taskbar.
Affected Models
- ThinkPad X41 Tablet
Affected Operating Systems
- Windows XP
- Linux? (anyone using Linux having the problem?)
Status
A workaround is being tested.
Solutions
Undervolting the CPU seem to solve the issue (see TabletPCBuzz link below).
In Windows XP (and Vista?), this can be done using the Notebook Hardware control utility and the following voltages:
- 1500MHz model: 0.748V @ 6X, 0.796V @ 8X, 0.844V @ 10X, 0.908V @ 12X, 0.940V @ 15X
- 1600MHz model: 0.748V @ 6X, 0.796V @ 8X, 0.844V @ 10X, 0.908V @ 12X, 0.940V @ 16X
(values reproduced from the Any Updates Jumping Cursor? TabletPCBuzz thread)
Related Links
- Any Updates Jumping Cursor? TabletPCBuzz thread
- Notebook Hardware control utility homepage
