Ralph Katz composed on 2017-06-23 19:29 (UTC-0600):
.
> Felix Miata wrote:
.
>> apt install xserver-xorg-video-intel' and restarting X
.
> It was already installed.
Right, upgrade, not new installation, so kept. :-p

Is firmware-misc-nonfree installed?

https://wiki.debian.org/NewInStretch (at the bottom):

Try 'apt install xserver-xorg-legacy'. Whether that is simply about setuid or
more I haven't figured out, and likewise, how Stretch decides whether to use the
intel or the modeset driver.

Use of the intel driver can be forced (tested here on i965Q) by creating:

File:
/etc/X11/xorg.conf.d/20-use-intel-gfx-driver.conf

Containing:
    Section "Device"
        Identifier "somestring"
        Driver  "intel"
    EndSection

It may or may not need to include any of the following if you experience visible
disruption:
        Option  "AccelMethod"   "sna"
        Option  "AccelMethod"   "uxa"
        Option  "TearFree"      "true"
-- 
"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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