Red Hat Bugzilla – Bug 136162
PS2 trackpad on laptop does not work
Last modified: 2015-01-04 17:10:54 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1;
SV1; .NET CLR 1.1.4322)
Description of problem:
kernel fails to recognize internal (PS/2) trackpad (touchpad) but
will recognize USB mouse. Device was not recognized when booting the
install CD and has not been recognized by any version of the kernel
I've built from source. Tried turning on legacy ps/2 (/dev/psaux)
and PCI PS2 (pcips2) devices in kernel but still no input from
Possibly related to bug # 123851 ... on my laptop, there is no
external PS/2 port. If 123851 is related, then the kernel could
detect the internal keyboard first, then fail to detect the touchpad.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Boot from 2.6.5 or 2.6.8 kernel on laptop equipped with internal
2. Let startup script run gpm, or start X window system, or
Actual Results: No response when attempting to use touchpad to move
Expected Results: gpm, X - expected cursor to move when touching
cat - expected data to be output to console when touching touchpad
Plug in a USB mouse and all three tests work as expected when using
the mouse - still no response from the trackpad though.
get latest kernel source (I'm using 2.6.8-1.521) so you can build
PS/2 mouse support as a module.
either edit .config file and set CONFIG_MOUSE_PS2=m or
use make menuconfig and set PS/2 mouse (under Device Drivers/input
devices) to "m"
make clean (follow instructions in README file in src directory)
copy the resulting boot image to where you boot from (/boot for
example) and add it to the appropriate boot config file (e.g.
mkinitrd to build the matching .img file
copy the System.map file there too
reboot and select the new kernel
gpm will probably be started in your startup script
login as root (assuming you boot to init 3 console login prompt)
gpm -k (to kill gpm)
gpm -m /dev/input/mice -t ps2
you should see the cursor appear and now be able to use the trackpad
in both console and X.
I'm still fiddling with the xorg.conf file and synaptics driver.
Fedora Core 2 has now reached end of life, and no further updates will be
provided by Red Hat. The Fedora legacy project will be producing further kernel
updates for security problems only.
If this bug has not been fixed in the latest Fedora Core 2 update kernel, please
try to reproduce it under Fedora Core 3, and reopen if necessary, changing the
product version accordingly.