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Groups > linux.debian.user > #165796

Re: Multi-display - one monitor active but blank

From Felix Miata <mrmazda@earthlink.net>
Newsgroups linux.debian.user
Subject Re: Multi-display - one monitor active but blank
Date 2016-03-21 22:30 +0100
Message-ID <rffyG-2WC-13@gated-at.bofh.it> (permalink)
References <rfffk-2ON-1@gated-at.bofh.it>
Organization less than infinite

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Oliver Elphick composed on 2016-03-21 21:01 (UTC):

> 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?

Which Debian?

What gfxchip powers your displays? Maybe you hit a known bug, such as:
https://bugzilla.kernel.org/show_bug.cgi?id=94171

Show us Xorg.0.log and .xsession-errors and maybe we can help.
-- 
"The wise are known for their understanding, and pleasant
words are persuasive." Proverbs 16:21 (New Living Translation)

  Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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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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