Multi-display - one monitor active but blank

From	Oliver Elphick <olly@lfix.co.uk>
Newsgroups	linux.debian.user
Subject	Multi-display - one monitor active but blank
Date	2016-03-21 22:10 +0100
Message-ID	<rfffk-2ON-1@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

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I have two monitors; the second one sometimes comes to life but is
usually blank. However, the system thinks that it is active and
displaying.

The primary monitor is a Samsung 24" and the secondary (usually non-
functioning) one a Mirai  - Chi Mei Optoelectronics 22".  Just
occasionally the second monitor comes up and can be used normally, but
once the displays are turned off by the screen saver, it remains blank
when the display comes back.  However the "Displays" utility says that
it is in use.

Previously I avoided the problem by turning off the screen-savers and
leaving the monitors turned on 24 hours a day, but I have just
installed Debian (instead of Mint) and the problem has come back.

Any ideas where to start to solve this, please?


-- 
Oliver Elphick
Lincolnshire, England

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Thread

Multi-display - one monitor active but blank Oliver Elphick <olly@lfix.co.uk> - 2016-03-21 22:10 +0100
  Re: Multi-display - one monitor active but blank Felix Miata <mrmazda@earthlink.net> - 2016-03-21 22:30 +0100
    Re: Multi-display - one monitor active but blank Mark Fletcher <mark27q1@gmail.com> - 2016-03-22 00:10 +0100
      Re: Multi-display - one monitor active but blank Oliver Elphick <olly@lfix.co.uk> - 2016-03-22 00:20 +0100
        Re: Multi-display - one monitor active but blank Lisi Reisz <lisi.reisz@gmail.com> - 2016-03-22 11:20 +0100
          Re: Multi-display - one monitor active but blank Ric Moore <wayward4now@gmail.com> - 2016-03-22 21:40 +0100
            Re: Multi-display - one monitor active but blank Oliver Elphick <olly@lfix.co.uk> - 2016-03-22 23:10 +0100
    Re: Multi-display - one monitor active but blank Felix Miata <mrmazda@earthlink.net> - 2016-03-22 02:00 +0100
      Re: Multi-display - one monitor active but blank Oliver Elphick <olly@lfix.co.uk> - 2016-03-22 10:50 +0100

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