I just installed KDE stable on my laptop and spent some time figuring out most of the problems I have. One things bothers me, though, is that grub menu does not show consistently. Without changing any settings and/or pressing any key, sometimes the menu shows up before the boot messages appear on screen (which is the expected behavior), and sometimes nothing is shown before boot messages.
In my attempt to spot some pattern and figure out what's happening, I repetitively reboot my laptop without logging into the OS (click the 'reboot' option on login page). The first two times, the menu did not show up. However, without doing anything, the menu showed up the third time (I did not press left shift or esc key). And then the menu showed up consistently for 6 or 7 times. My other attempts had similar results.
I did very little changes to the grub config file. I removed "quiet" from GRUB_CMDLINE_LINUX_DEFAULT. I also added a new line "GRUB_HIDDEN_TIMEOUT=120" in the hope that if grub is hidden it will be quite obvious, but when the menu did not show up, it jumped straight to boot messages without waiting for 2 minutes. I did verify that changing the GRUB_TIMEOUT value affect the wait time before booting to the default entry when the menu did show.
I'm quite confused at the moment. I'm not sure if it is a grub problem or UEFI problem (I did disabled legacy boot in the firmware) or something else. I hope someone can give me some hint or tell me what kind of information I should post here to figure out what's happening.
GRUB_DEFAULT=saved GRUB_HIDDEN_TIMEOUT=120 GRUB_TIMEOUT=5 GRUB_TIMEOUT_STYLE=menu GRUB_DISTRIBUTOR='Manjaro' GRUB_CMDLINE_LINUX_DEFAULT="resume=UUID=d77b93d1-6f32-47cc-a60d-476aae5356c6" GRUB_CMDLINE_LINUX="" # If you want to enable the save default function, uncomment the following # line, and set GRUB_DEFAULT to saved. GRUB_SAVEDEFAULT=true # Preload both GPT and MBR modules so that they are not missed GRUB_PRELOAD_MODULES="part_gpt part_msdos" # Uncomment to enable booting from LUKS encrypted devices #GRUB_ENABLE_CRYPTODISK=y # Uncomment to use basic console GRUB_TERMINAL_INPUT=console # Uncomment to disable graphical terminal #GRUB_TERMINAL_OUTPUT=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command 'videoinfo' GRUB_GFXMODE=auto # Uncomment to allow the kernel use the same resolution used by grub GRUB_GFXPAYLOAD_LINUX=keep # Uncomment if you want GRUB to pass to the Linux kernel the old parameter # format "root=/dev/xxx" instead of "root=/dev/disk/by-uuid/xxx" #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries GRUB_DISABLE_RECOVERY=true # Uncomment and set to the desired menu colors. Used by normal and wallpaper # modes only. Entries specified as foreground/background. GRUB_COLOR_NORMAL="light-gray/black" GRUB_COLOR_HIGHLIGHT="green/black" # Uncomment one of them for the gfx desired, a image background or a gfxtheme #GRUB_BACKGROUND="/usr/share/grub/background.png" GRUB_THEME="/usr/share/grub/themes/manjaro/theme.txt" # Uncomment to get a beep at GRUB start #GRUB_INIT_TUNE="480 440 1"