I've used "sudo apt-mark hold shim-signed" to stop upgrades temporarily.
- Bug#1137098: shim-signed: Fails to install but output seem... eric
- Bug#1137098: shim-signed: Fails to install but output... Eric Valette
- Bug#1137098: shim-signed: Fails to install but ou... Eric Valette
- Bug#1137098: Ashish Kulkarni
