Multi Video Cards with Multi Monitors Issue

[Brian Lambert]

HP Z420  Xeon E5-2620

ATI FIREGL V3600 (2 x DVI)
ATI FIREGL V7300 (2 X DVI)

PHILIPS    1920x1080    16:9
Benq 24"    1920x1080    16:9
ASUS 25"    1920x1200    16:10

On first set up with all three monitors, both 16:9s would boot up with display
and the 16:10 would be disabled. Enabling the 16:10 display would skew booth
16:9 displays with horizontal lines about an inch apart.

The second set up with only the Benq and Asus and on separate cards, only the

16:9 would boot up with display and the 16:10 would be disabled. After enabling

the Asus display, initially had both displays working but mouse movements on the

16:9 display was slowed. Playing with the settings again, the 16:9 display signal

went dead. On reboot, both displays worked in mirror mode and was unable to

make any changes, except disable display.

Assuming, if all the monitors were the same resolution, they would all be working. Is

this issue caused from mixing screen resolutions or screen ratios?

I am thinking of getting a new monitor with 2560 x 1440, am I safe in thinking that

maintaining the same screen ratios won't cause an issue?

TIA

Brian.

[Brian Lambert]

Update:

Found an old Acer 1440x900 16:9 and work as it should with the 1920x1080 Benq,
then did the fedora-24 update and tried these two monitors again with enabling
the 16:10 display and it did the exact same thing, skews booth 16:9 displays with