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Description of problem: I prefer to see the kernel boot messages as my machine is powering up. So I remove the "rhgb quiet" options from the kernel line in /boot/grub/grub.cfg. I discovered that on my Pentium M laptop if I do this, the boot just pauses after displaying: input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio4/serio5/input/input12 ...with the mouse cursor blinking underneath it. Hitting keys like Ctrl, Alt or Shift does not do anything. However, typing a character (a-z, 0-9, etc.) causes the "Please enter passphrase for disk" prompt to suddenly appear. Version-Release number of selected component (if applicable): I'm not sure which component is responsible for prompting the user for the LUKS password upon boot-up. This was a fresh Fedora 25 install; cryptsetup version is 1.7.2-3.fc25.i686. Additional info: Adding "rhgb" back to the kernel boot line causes the graphical LUKS password prompt to appear. Also, this did not happen on my x86_64 virtual machine. Removing "rhgb quiet" on it still allows the text passphrase prompt to appear.
Not sure who is responsible for the script processing rhgb quiet options, I guess it is dracut...
Tried this again in a 32-bit Fedora KVM virtual guest. Same thing, though it got a little further past the input: ImExPS/2 Generic Explorer Mouse as /devices/platform/i8042/serio1/input/input3 ...line than my physical machine did getting past its input line.
The prompt is printed by systemd (specifically, systemd-ask-password-console.service), but the output from the kernel and other services that print the console can sometimes obscure the prompt. This is most likely what happens in this case. The work-around of pressing some keys seems to be the best option.
Zbigniew Jędrzejewski-Szmek wrote on 2017-01-09 13:50:15 EST: === > but the output from the kernel and other services that > print the console can sometimes obscure the prompt. This > is most likely what happens in this case. === I do not believe that is what is happening in this case. On my physical machine, after selecting the GRUB menu option, boot-up text starts to scroll down the monitor at a 80x25 character resolution. The screen then clears and the resolution of the text becomes (I think) 160x120 characters. The console & kernel output only goes down the screen about half-way. I've seen instances of what you're talking about, before: the "Please enter passphrase" prompt appears but then is followed by several lines of text, causing the user to wonder why the output has stopped. The user eventually sees the prompt text a number of lines above where the output stopped and figures it out. In this case, there is no prompt text, at all.
If this happens when the resolution is changed, then this sounds like a kernel tty bug. But it's unlikely to be ever fixed — nobody wants to touch this code, text boots are a minority, and a work-around exits...
yes, this is a systemd and kernel problem - not dracut
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