I'm setting up a new Lenovo Ideapad 320 and everything shows up and works
fine except for the touchpad.
I did have to get into the bios and set Legacy for boot device and boot mode to
get Centos 7 to finish installing. The default bios settings would load the
Centos 7 Gnome Live image from a usb flash drive and work (except for the
touchpad) but when I tried to install to the hard drive it would get to the end
of the process and kernel panic when it was writing the bootloader. Setting
Legacy Boot in the bios solved that problem.
I have run yum update so everything is up to date.
But the touchpad doesn't show up at all.
[frankcox at localhost ~]$ cat list.txt
? Virtual core pointer id=2 [master pointer (3)]
? - Virtual core XTEST pointer id=4 [slave pointer (2)]
? - Logitech USB Receiver id=8 [slave pointer (2)]
? Virtual core keyboard id=3 [master keyboard (2)]
- Virtual core XTEST keyboard id=5 [slave keyboard (3)]
- Video Bus id=6 [slave keyboard (3)]
- Power Button id=7 [slave keyboard (3)]
- EasyCamera id=9 [slave keyboard (3)]
- AT Translated Set 2 keyboard id=10 [slave keyboard (3)]
- Ideapad extra buttons id=11 [slave keyboard (3)]
The Logitech USB Receiver listed here is the wireless mouse that I'm using
on it right now since the touchpad doesn't work.
I've been reading everything I can find about this problem, tried a few
different grub parameters that didn't help, and the most advanced solution
that I've tried was this:
https://superuser.com/questions/1156057/touchpad-not-working-on-centos-7-2
1. Add i8042.nopnp to grub command line in /etc/default/grub:
# change this:
GRUB_CMDLINE_LINUX_DEFAULT="... quiet splash"
# to:
GRUB_CMDLINE_LINUX_DEFAULT="... quiet splash i8042.nopnp"
2. Update your grub config (as root):
# If you're using UEFI boot
grub2-mkconfig -o /boot/efi/EFI/centos/grub.cfg
# or legacy
grub2-mkconfig -o /boot/grub2/grub.cfg
3. Blacklist module i2c_hid (as root):
echo "blacklist i2c_hid" > /etc/modprobe.d/i2c-hid.conf
4. Regenerate your initramfs (as root):
cp -v /boot/initramfs-$(uname -r).img /boot/initramfs-$(uname -r).img.bak
dracut -f
5. Reboot!
Unfortunately, that didn't change anything; xinput --list still doesn't
show the touchpad.
I have found references to some deb packages and fedora rpms that don't
appear to exist for Centos 7:
xorg-x11-drv-synaptics-legacy.x86_64
elantech-0608-dkms_0.2_all.deb
I've pretty much run out of ideas. I checked the bios and don't see
anything that appears to be related to the touchpad (not that I was really
expecting to).
--
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