Re: [gentoo-user] Console won't un-blank

[Alan McKinnon <alan.mckinnon@gmail.com>]

On 18/10/2013 03:02, Michael J. Barillier wrote:
> If I leave my laptop unattended (at a console, not X) and the screen
> blanks, pressing a key won't un-blank the terminal.  As a test, I ssh'ed
> into the laptop and ran:
> 
>   # setterm -blank poke >/dev/tty$N
> 
> (as root, for the current/active TTY) which according to the man page
> should restore the screen - no response.  Also tried chvt but that
> didn't work either.  Any suggestions on where to look to see why the
> terminal won't restore?  Is this a kernel config (ACPI?) issue, or an
> agetty issue?
> 


What video hardware are you using, and what driver?

I've had similar issues in the past myself with a variety of causes:

- dodgy versions of mesa
- dodgy versions of video drivers (both nouveau and radeon)
- incorrect kernel settings, usually getting KMS wrong
- incompatible combinations of framebuffer and KMS

I don't recall any case where the problem was purely userland and the
kernel systems were not involved

hth

-- 
Alan McKinnon
alan.mckinnon@gmail.com