How do I turn on my second video card and monitor?

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How do I turn on my second video card and monitor?

Postby ezst036 » 2017-09-02 17:05

I recently installed Debian 9 on a test computer which has two video cards and two monitors.

I know the hardware works because I can use it in other distros and live cds. I looked in the Gnome display and other control panels and nothing stood out.

What do I need to do to turn on the second videocard? Presumably, the monitor is not really the problem, I just need to turn the card on.

If it matters, one video card is a Radeon HD 7700 and the other is an HD 5700.
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Re: How do I turn on my second video card and monitor?

Postby bigrigdriver » 2017-09-03 19:55

You probably need to install the firmware-linux-nonfree package, which has firmware for the Radeon cards you named.
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