There is new release or BIOS for XPS 13 9343 laptop. It did not fix repeating keystrokes problem for me, but I did learn a few things in the process of installing the firmware update.
Upgrading to BIOS A04
go to download page
then apparently there are 2 ways to proceed
- Put file into /boot/efi and reboot
- make a USB stick.
Make a USB stick
Download FreeDOS USB image. I picked 256M version.
Use gparted to create fat32 partition on your usb
Use (kinda buggy) Setup Disk Creator to create FAT32 boot from the downloaded ISO file
Insert USB stick and reboot machine
Press F2 when Dell logo showes up to get to setup mode
In Boot options pick legacy and USB stick. Apply, Exit
Boot the disk, type to boot freedos, pick 4th option (no drivers), and execute the firmware update command.
Unfortunatelly these steps did not save me from repeated keystrokes as I said.