I'm running Linux Mint 18.1 MATE Edition on my Acer Aspire R14 R5-471T-51UN.
Problem 1 is semi fixed: When the laptop went into suspend mode while on battery when I awakened it to log back in the keyboard quit working (except for the function buttons/features). I was unable to type anything. Using the on-screen keyboard in the login screen I was able to log in but still unable to type anything or use Alt-Tab, etc.
The suggestion I found was to edit grub via this answer:
Basically, run this in a shell to confirm you are applicable to this solution:
dmesg | grep i8042 and confirm you get this output
[ 1.514469] i8042: PNP: PS/2 Controller [PNP0303:KBC,PNP0f13:MOUE] at
0x60,0x64 irq 1,12 [ 1.525273] serio: i8042 KBD port at 0x60,0x64 irq 1 ?[ 1.525287] serio: i8042 AUX port at 0x60,0x64 irq 12 [ 1.526035] input: AT Raw Set 2 keyboard as /devices/platform/i8042/serio0/input/input3 [ 21.927438] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input10 then, add the boot parameters i8042.direct and i8042.dumbkbd to >/etc/default/grub.
For example, run
sudo nano /etc/default/grub Find the line that begins GRUB_CMDLINE_LINUX_DEFAULT= and edit it to >include the new parameters, so that after your edit it looks something >like
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.direct i8042.dumbkbd" Save by pressing Ctrl+O, exit by pressing Ctrl+X, and run
Problem 2: My right, up, and down arrow keys don't work now, which has disabled my ability to brighten or dim the screen and raise or lower the volume using the Function key, and many more obvious problems. My left arrow key works.
The Pg Up (Home) and Pg Dn (End) buttons (functions) do work, they are right next to arrow keys.
I don't know what to do to fix this. It's so odd!!
In my Keyboard settings I have English (US) selected and Acer Laptop selected as the model. I've tried other options and it doesn't change anything.
"Reset to Default" for Options has been hit numerous times in the hopes that it would fix it. I never did modify anything as far as keyboard, layout, shortcuts, or locale goes.
Problem 3: Occasionally the entire keyboard quits working without a known reason why. The only way I've found to restore it is to restart the computer.
Any help is appreciated.