On Fri, Jul 19, 2019 at 8:28 AM jdm <jdm@jdm.myzen.co.uk> wrote:

> Hi,
>
> For the last 2 months I have been getting a problem where my machine
> locks and after 2 seconds goes to a black screen. The machine is then
> unusable, ctrl-alt-delete F1 or sys rescue keys do not work and you
> cannot remote login.
>
> I initially thought this was a problem with lxd but then experienced
> issue when just using Enlightenment desktop. I have switched to xfce4
> but still getting issue.
>
> It happens 2 to 3 times a week.
>
> There is nothing in logs (/var/log/messages).
>
> I upgraded BIOS a beginning of year so don't think it's that but have
> just upgraded again to see if that helps.
>
> Running ASUS Prime x470 Prime with ryzen 2700 and have upgraded kernel
> to latest stable when running emerge --update...
>
> Any idea on how to debug an issue like this?
>

A few questions;
- do you boot straight into X ? If so, have you tried disabling X to see if
the CLI only is stable?
- Which video card and are you using and are you loading the firmware?
- Have you done an emerge @x11-module-rebuild since your last kernel update?
- Anything interesting in ~/.local/share/xorg/Xorg.0.log? If 'Build
Operating System' and 'Current Operating System' are different you could
try rebuilding xorg-server, but it shouldn't matter.

I've only heard of the c-state issue affecting early Ryzen 1s.