On 9/9/17 12:50 PM, Efraim Flashner wrote:
On Fri, Sep 08, 2017 at 03:03:24PM +0200, David Seaward wrote:
Hi all,
I am trying to run Guix SD from a live USB on two machines. On machine
A this works: I can select "linux-libre" from GRUB and the startup
process runs, ending with a prompt on TTY 1 and documentation on TTY 2.
On machine B, the startup process runs but towards the end (ssh-
keygen... ncsd...) the screen goes black and I can't switch between
TTYs.
How can I diagnose the cause of this problem? Even enough to report an
error message.
Perhaps see if there's a way to set more verbose logging with a boot
parameter, and find a way to capture the console messages (e.g., use a
serial console, and a software TTY emulator). That will at least tell
you where things stop working. You can start debugging from there.
A cruder approach: On the system that works, record the sequence of
steps that occur "towards the end." Then work through the configuration
of each of those steps, in turn, for the machine that doesn't work.
(Hunch: There's a subtle mismatch between configuration and the
underlying hardware.)
Miles Fidelman
--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
