Cut-and-Paste Quits Working

[Rich Shepard]

   This is a completely new situation that has not happened in the past dozen
years running linux and the X Window System. A couple of weeks ago I
upgraded to Slackware-13.0 (from -12.2) with the 2.6.29.6-smp kernel,
xorg-server-1.6.3, and xfce-4.6.1. Rebooting into the new kernel revealed a
hardware problem that turned out to be the video/northbridge chip on the
motherboard.

   I replaced the motherboard, CPU, and memory using the same hard drives.
Now I find that when I try to paste text marked and cut with the left mouse
button, nothing happens. I'll get a white line on the vt, or an xfce4 menu
in a GUI application, but no pasting. Killing the X server and restarting it
restores the capability. However, this can happen multiple times per day.
Since I use this capability hundreds of times each day as I work, it's not
acceptable to have it continue failing.

   No one on the local linux/unix mail list, the Slackware mail list, or the
xfce mail list has been able to help me resolve this problem. I certainly
hope that someone here can point me to a source and a solution.

   Saturday night I'll let memtest86 run because there's not too much mail
that comes in during the weekend. I'll also be replacing the hard drive(s)
with a new drive. If the problem is caused by hardware, and the memory
checks out OK, then the new hard drive should fix it.

   If it's a software issue, I need your guidance in finding what broke so it
can be fixed.

Rich