Red Hat Bugzilla – Bug 177159
FC4 doesn't work with kvm switches and optical mice
Last modified: 2015-01-04 17:24:12 EST
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; FDM) Description of problem: I know there are other people out there with similar problems but i've had to roll back to redhat 9 because Fedora simply can't be run in my environment. I have a KVM switch and an optical mouse, and yes, after switching the kvm, the mouse goes beserk and the system is unusable. Unplugging the optical mouse is fine, and i managed to dig out a mouse with a ball in it and that doesn't have the same problems. I suggest there lies a problem with the driver code for the optical mice, seing as Redhat 9 doesn't have a problem at all. Version-Release number of selected component (if applicable): FC4 How reproducible: Always Steps to Reproduce: 1. Make sure you're using an optical mouse 2. Log in to FC4 3.Switch the kvm switch to another computer 4.Switch back to FC4 Actual Results: Mouse becomes hyper, it moves all over the screen, randomly opening up applications, dragging the bars around the screen, moving icons. Expected Results: Mouse should behave exactly like redhat 9, no erratic movement, it should just work fine. Additional info: If i can't use Fedora in a KVM environment, then what use is Fedora? I need to build a bank of linux machines and i can't have dozens of keyboards, mice and screens.
X uses the kernel /dev/input/mice device for all configurations for quite a long time now, which uses a single protocol: IMPS/2 for all mice, as this is the protocol the kernel's driver exports. I personally use a KVM switch with an optical mouse and have no such problem. As such, this issue is most likely a problem either with your hardware, or with the individual kernel module for your specific hardware. Reassigning to the kernel component.
Please attach the dmesg taken across a KVM switch (do not drop it into the comments box).
This is a mass-update to all currently open kernel bugs. A new kernel update has been released (Version: 2.6.15-1.1830_FC4) based upon a new upstream kernel release. Please retest against this new kernel, as a large number of patches go into each upstream release, possibly including changes that may address this problem. This bug has been placed in NEEDINFO_REPORTER state. Due to the large volume of inactive bugs in bugzilla, if this bug is still in this state in two weeks time, it will be closed. Should this bug still be relevant after this period, the reporter can reopen the bug at any time. Any other users on the Cc: list of this bug can request that the bug be reopened by adding a comment to the bug. If this bug is a problem preventing you from installing the release this version is filed against, please see bug 169613. Thank you.
Closing per previous comment.