modeset(0): Modeline "1680x1050"x0.0

Chris chris.pollock1948 at
Tue Nov 20 20:02:39 UTC 2018

On Tue, 2018-11-20 at 15:41 +0000, Colin Law wrote:
> On Fri, 9 Nov 2018 at 20:59, Chris <chris.pollock1948 at>
> wrote:
> > 
> > Since update to 18.04.1LTS in Aug periodically what's shown here
> >
> > gets output to syslog.
> Did you tell us how often it is happening?  I don't know whether you
> suspend the PC but if you do then I think it will happen on resume.
> Run
> tail -f /var/log/syslog | grep -i modeline
> and leave the terminal open.  See if it happens when you do something
> in particular.

It's hard to reproduce Colin. No, PC doesn't suspend. I run tail -f on
my syslog each morning when I get up and let it run like that until I
call it a night. The PC stays on 24/7 however. For instance just now I
quit and restarted Evo

Nov 20 10:54:31 localhost /usr/lib/gdm3/gdm-x-session[2192]: (II)
modeset(0): EDID vendor "ACR", prod id 22
Nov 20 10:54:31 localhost /usr/lib/gdm3/gdm-x-session[2192]: (II)
modeset(0): Using hsync ranges from config file
Nov 20 10:54:31 localhost /usr/lib/gdm3/gdm-x-session[2192]: (II)
modeset(0): Using vrefresh ranges from config file
Nov 20 10:54:31 localhost /usr/lib/gdm3/gdm-x-session[2192]: (II)
modeset(0): Printing DDC gathered Modelines:

I just shut down Firefox, it happened, restarted Firefox, did not
happen. Shut Firefox down again, it did not happen. Started Firefox
again, it happened. Started XFE, did not happen, closed XFE it
happened. So, as you can see it appears to be very, very random as to
when it happens. I run logcheck every hour and I can safely say that
immediately after my upgrade to 18.04LTS on Aug 16th this appeared in
my syslog.

> I am seeing a number of these each day, looking at the log, I am
> running the command to see when it happens here.

Glad you said you're seeing the same thing on your end. I was beginning
to think that I was the only person in the whole world that saw this.

31.11972; -97.90167 (Elev. 1092 ft)
10:54:51 up 3 days, 19:37, 1 user, load average: 1.06, 0.44, 0.29
Description:	Ubuntu 18.04.1 LTS, kernel 4.15.0-39-generic

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