There're not working button ctrl and alt (only in firefox).
Probably from two days in firefox, two buttons (alt and ctrl) don't work, I don't know why. There're not working only in mozilla firefox. I can't use ctrl + c etc and my Polish letters. :(
Összes válasz (1)
Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of your add-ons is causing your problem (switch to the DEFAULT theme: Tools > Add-ons > Themes).
See Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems and Troubleshoot issues with plugins like Flash or Java to fix common Firefox problems