I've been looking for an excuse to dig into the linux kernel that would affect me, and I started using the 2.6 kernel, and found a reason... Briefly -- In 2.4.29 kernel, everything works fine with my mouse, with or without my linksys kvm switch. In 2.6.12.4 (and earlier 2.6 kernels that I could get to compile) the mouse doesn't work when I have the kvm switch attached (bypassing the kvm switch, the mouse works fine). I've tried changing the mouse 'rate' in the driver from '100' to '60', but that did not do anything to alleviate the problem (in fact, I got the same 'lost synchronization - dropping 3 bytes' message. The mouse also jumps all over the screen whether I use X11 or I temporarily install and run 'gpm' to get console mouse. It looks like the mouse driver structure in the 2.6 kernel is significantly different than the 2.4 driver, but I plan on studying both as I work on this problem. Before I navigate this territory alone, and remembering the following about me -- Years and years ago I was a "professional" kernel programmer working on UNIX (SVR4/BSD) kernels, and I have never really studied the linux kernel. When I worked on the UNIX kernel, I had a team of experts (I was junior/scrub-like) I could consult when I got lost. I would like to know if this list is where I might be able to get help as I work through this issue and similar issues. For example, in the psmouse driver, there's an interrupt routine that gets called from who-knows-where on who-knows-what condition. I'm wondering if this is an interrupt that is fired at a regular interval by a timer chip, or by an event like the mouse moving on the ps/2 port (???). It's hard (being unfamiliar with the structure of the kernel -- though I did by the 2nd edition of Robert Love's book which I'll read as time allows) to do this because the kernel is relatively large (I believe the source tarball was something like 32mb compressed). -Rob -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
