Re: Third Monitor Stopped Working

From	Felix Miata <mrmazda@earthlink.net>
Newsgroups	linux.debian.user
Subject	Re: Third Monitor Stopped Working
Date	2016-11-08 18:30 +0100
Message-ID	<sBinE-3Pq-41@gated-at.bofh.it> (permalink)
References	<sBcBA-bB-13@gated-at.bofh.it>
Organization	less than infinite

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Barak A. Pearlmutter composed on 2016-11-08 11:00 (UTC):

> I have three monitors, two 4K and one 1920x1200, all lined up
> horizontally: [4k][4k][1920x1200].  This configuration worked fine
> until I upgraded to stretch (testing) a few weeks ago.  Now only the two
> 4k monitors are usable, the third is off (by default) or if I force it
> on using xrandr it just mirrors.

...
> (a) What happened?  Is this due to wayland?  Is this a regression?  Should I report a bug?
...
> The two 4k displays are daisy-chained on a displayport output, the
> 1920x1200 is on a VGA connector.
...
> $ dpkg --status xserver-xorg-video-intel | egrep Version:
> Version: 2:2.99.917+git20160706-1
...
> $ lspci  | egrep VGA
> 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)...

You didn't report whether it is actually the Intel driver being used. You may 
be either needing the modesetting driver, or using it but needing the Intel 
driver.

http://www.phoronix.com/scan.php?page=news_item&px=Ubuntu-Debian-Abandon-Intel-DDX

It might be more fruitful to report the problem on the 
intel-gfx@lists.freedesktop.org and/or xorg@freedesktop.org and/or 
wayland-bugs@lists.freedesktop.org mailing lists.
-- 
"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

Third Monitor Stopped Working "Barak A. Pearlmutter" <barak@pearlmutter.net> - 2016-11-08 12:20 +0100
  Re: Third Monitor Stopped Working Dan Ritter <dsr@randomstring.org> - 2016-11-08 13:30 +0100
  Re: Third Monitor Stopped Working Felix Miata <mrmazda@earthlink.net> - 2016-11-08 18:30 +0100

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