Comment 132 for bug 39315

Guy Gong, you are not posting to a forum but to a bug report. As far as I can say from your description, you are not having the bug which is reported here. The bug was (in older versions of the linux kernel), that any key pressed was repeated or sometimes any key press was simply ignored. Your problem is that suddenly your right arrow key hangs and generates key press events. This seems to be a hardware fault (maybe dust or similar), as you experience this problem right at boot time (even in the BIOS). The bug which is described here only occurred at certain versions of the kernel. It didn't happen in the BIOS, nor in Windows.

I suggest you to get your notebook hardware (keyboard) checked.