Hi Jack,

On Sat, Oct 15, 2016, jack wrote:
> I have been stumped by a problem with Devuan 1-beta running on 6th
> generation Intel processors [i5-6200u, celeron n3050]. I am using openbox
> as a window manager/desktop [but same happens with XFCE4], starting from a
> tty with:
>
> startx
>
> which brings up openbox and an lxterminal. All is fine until I attempt to
> exit xorg and return to the tty: the following errors are issued and the
> screen freezes, unresponsive to anything other than a power cycle:
>

>   xinit: connection to X server lost
>   waiting for X server to shut down XIO: fatal error 4
>     (Interrupted system call) on X server ":0"
>   after 614 requests (614 known processed) with 0 events
>     remaining
>   .error setting MTRR (base = 0x..., size=0x..., type=1)
>     invalid argument (22)
>   (EE) server terminated succesfully (0).  Closing log file.

>
> The /var/log/Xorg.0.log file is corrupted.
>
> my .xinitrc is a simple
>
> lxterminal&
> exec openbox
>
> From the error messages, you would think think xorg completed fine, but I
> put "echo" messages in "startx" before and after the "xinit" command, and
> the second does not appear.
>
> I am using Void Linux [4.5.2 kernel] on the 6200u laptop without problems,
> but I also installed Slitaz Linux, which has a 3-series kernel.
>
> I would appreciate any help that others here can give.

I can offer a couple ideas.

There is a choice of a couple of video drivers for X,
notably, the VESA driver is the most generic.
and may be worth trying out. You can specify that in
/etc/X11/xorg.conf, as detailed here:

http://kimbriggs.com/computer/x11-xorg-conf-vesa-driver

Of course you may want to see what video module is loaded.
I see that

    cat /proc/modules

should work. I'm used to using 'lsmod' for that.

You can set various video modes at boot time:

https://unix.stackexchange.com/questions/71231/grub2-and-kernel-vga-parameter

This could also make a difference.

hth,

joel

> Jack

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--
Joel Roth