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Re: Debian 7 and external monitors and graphics adaptors

On 09/04/2015, Bret Busby <bret.busby@gmail.com> wrote:
> Hello.
> On a new installation of Debian 7 on an Acer "laptop" computer with an
> AMD Radeon R2 graphics adaptor, the external monitor does not work.
> The external monitor works with MS Win 7, with MS Win 8, with Debian
> 6, and with Ununtu 12.04 and with Ubuntu 14.04.
> On another Acer "laptop" computer with Debian 7 installed, the
> external monitor works with MS Win 8, and with Ubuntu 14.04, and not
> with Debian 7. That computer has an nVidia graphica adaptor, that has
> previously been mentioned on the list.
> Does Debian 7 work with external monitors?

Oh, and three other points.

1. It occurred to me, that maybe Debian 7 can't handle HDMI, so I
replaced the HDMI lead to the monitor, with a VGA lead, and rebooted.
No change.

2. On this new Debian 7 installation (from a 7.8.0 DVD), a component
from the menu's, appears to be missing. On my Debian 6 desktop
computer, from the menu's, is
System -> Preferences -> Monitors
which has the option "Detect monitors".
Whilst the Acer V3-772G is unable to see the external monitor, as the
Debian 7 installation on that system, cannot cope with the nVidia
graphics adaptor, it does have that menu option, or an equivalent.
I can not find that menu option (System -> Preferences -> Monitors) in
this new Debian 7 installation.
Both the Debian 7 installation on the Acer V3-772G, and the Debian 7
installation on this new system; Acer E5-521-238Q, are used with the
Gnome Classic interface.

3. The external monitor is a Dell ST2310, which appears to wotk okay
with all of the operating systems specified ib the original method
above, other than Debian 7.

Bret Busby
West Australia

"So once you do know what the question actually is,
 you'll know what the answer means."
- Deep Thought,
 Chapter 28 of Book 1 of
 "The Hitchhiker's Guide to the Galaxy:
 A Trilogy In Four Parts",
 written by Douglas Adams,
 published by Pan Books, 1992


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