Thank you for the response,  I did some experimentation

It has been 5 days since I first experienced this issue.
On a lark I tried  "apt-get update"   "apt-get upgrade" on both problem
     and the *problem resolved on both systems*.
None of the updates appeared to be display related!?!??

I recallrf doing an "apt autoremove" to prior to reboot before the problem
Tried that again and BINGO, display problems again.
Even the F1 terminal mode was not stable.
Had to ssh in from another system and did another update/upgrade
This time no updates occurred.  Rebooted.  Display *working*.again.

Not sure what to think now  Will avoid the "autoremove" in the future

-- Bill Morita
512-569-6387 (Cell)

On Tue, Aug 8, 2017 at 8:38 AM, King Beowulf <kingbeow...@gmail.com> wrote:

> On 08/05/2017 09:04 PM, Alan wrote:
> > On Fri, 2017-08-04 at 10:04 -0700, Bill Morita wrote:
> >> 16.04.3 VGA Graphic display stopped working.
> >> Even a No-Machine connection does not seem to work.
> >>
> >> Ctrl-Alt-F1  does get me a simple text terminal.
> >>
> >> Anybody else seen this ?
> >>
> >> It has happened on both my systems.
> >> Currently booting to an older kernel to operated.
> >>
> >
> > What video card? What does lspci show?
> > _______________________________________________
> Bill
> More importantly, what does lsmod show?  You have terminal output so the
> card is working (hence nothing new in lspci). if the nouveau (Mesa,
> F/OSS) or nvidia (proprietary) modules are not loaded...
> Check:
> /var/log/Xorg.0.log
> for clues.  Did you update the kernel just before you lost the X
> display?  If using the proprietary binary nvidia blob, the kernel module
> is tied to a particular kernel version/release. After kernel update, you
> have to recompile the nvidia module kernel interface.
> Ubuntu and derivatives have a nasty habit of automatically updating the
> kernel on a whim, resulting in the death of proprietary drivers.
> -Ed
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