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Old 05-13-2016, 03:39 PM   #1
kaza
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Fed 23+KDE: can second monitor (TV) be cloned without ruining things?


Hello!

I recently installed Fed 23 (KDE spin) on my system which has an ATI FireGl V5600 video
card, which has two DVI outputs.

The monitor is connected to the DVI-0 and I would also occasionally like
to connect a TV (through DVI to HDMI cable) to DVI-1 and to have it show exactly
what the usual DVI-0 shows ("cloned").
So far my attempts to use the System settings -> Display and monitor -> Display configuration
weren't successfull: the monitor resolution is 1920x1200,
the TV resolution is 1920x1080, when I dragged the "DVI-1"rectangle onto the
DVI-0 monitor rectangle, I've got a chopped from bottom plasma desktop (launchers panel
which was at the bottom disappeared only to be eventually found "emigrated" to DVI-1
desktop) so I had to create a new panel on the standard DVI-0 desktop
and the desktop icons "forgot" their position and those that should've been
at the right edge - couldn't be placed there.
I also noticed that at some point the DVI-1 became the "boot desktop"
which is of corse wrong: I would like to reboot without having to look
at the TV...

Have I done anything wrong?
I attempted to click the "Scale display" button at the bottom of "Display configuration"
but it didn't solve anything.

Is it possible at all (that is: plasma 5 really ready) to have additional monitor
SOMETIMES connected (most of the time - not) without anything being ruined
on the DVI-0 desktop?

TIA,
kaza.
 
Old 05-14-2016, 10:28 AM   #2
business_kid
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I think you may need to write yourself an xorg.conf.d/ setup for the video.
Here's my setup:

Code:
ls /etc/X11/xorg.conf.d 
20-video.conf  90-keyboard.conf
The keyboard file sets my locale. The video file has a section for each 'card' (Output) and monitor. KDE may try to take over, but apart from that it's pretty straightforward, with plenty of examples online. Then just reboot X.
 
Old 05-15-2016, 01:46 PM   #3
kaza
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Hi business_kid, thank for the reply.

Currently I don't have the display configuration file:

Code:
<localhost.localdomain>.../user>ls /etc/X11/xorg.conf.d
total 4
-rw-r--r--. 1 root root 271 May 08 2016 22:13:54 00-keyboard.conf
I'm somewhat hesitant about wrighting from scratch the video configuration file,
so far I saw examples about other ATI cards (Radeon) but haw can I know
what should be the contents of that file for V5600 card?

TIA,
kaza.
 
Old 05-16-2016, 06:03 AM   #4
business_kid
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Attached is mine. I simply put in every monitor I could think of, and every video output. They were
  1. The Laptop Screen (1600x900)
  2. The Subminiature D Coinnector (VGA)
  3. The HDMI. This was to have 1920x1080 some of the time, but only 1280x720 driving a projector. It misbehaved initially. Hence the commented Modeline.
  4. There's a "Device" section for each output of the video card. A max of 2 are available to me at any time.
  5. A Screen Section for every Monitor. The main one is 1600x900, HDMI has 1920x1080 & 1280x720, and VGA has 1280x720, which is the resolution of my spare laptop

If you don't have the facts to write down, research your equipment. Most monitors are good for up to 60-65 Khz horizontal refresh these days. That's the only thing to watch - that you don't run it too fast. Google for a guide.
Attached Files
File Type: txt 20-video.conf.txt (2.3 KB, 9 views)
 
Old 05-22-2016, 02:06 PM   #5
kaza
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Hi business_kid, thanks for the help.

I opened the System settings -> Display and monitor
and saw the following options of the monitor and the TV (as seen by software):


Monitor resolutions: 1920x1200 1920x1080 1680x1050 1600x900 1280x1024 1440x900 1280x800 1024x768 800x600 720x576 720x480 640x480
Refresh rates: Auto 60.0 Hz.

TV resolutions: 1920x1080 1280x720 1024x768 800x600 720x576 720x480 640x480 720x400
Refresh rates: Auto 0.0 50.0 59.9 60.0 75.0 Hz

It showed the model of the monitor (Samsung S24C650) so I attempted googling for horiz. and vert.
freq. but had been drown in sales junk. Even adding search words like "Hz", horizontal/vertical
didn't help: it led me to power freq., dimentions, etc.

The name of the driver isn't written in "Display and monitor", can I check it by other means?
I didn't install any propriatary drivers so it should what's in the F23.

Do I need each and every line of the 20-video.conf file that I should create being filled?
What'll happen if I'll give only the vertical frequencies ranges and omit the vertical?

I'll read the syntax doc at https://wiki.archlinux.org/index.php/xorg#Using_.conf_files
(will take few days - lots of more important things than messing up displays) in hope
to understand better.

What should be my course of action is (probably: "when") I'll mess something in this file
and get a "black screen boot" or some other kind of messed up graphics?
How to prepare for it in advance?


TIA,
kaza.
 
Old 05-23-2016, 01:45 AM   #6
business_kid
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OK then, do the math.

1080 x 60 = 64,800. At 70hz refresh, that would be 1080 x 70 = 75600.

Personally I think 75600 is ambitious for a cheaper monitor.
Try


Code:
   horiz  31.5 - 65
   vert 50 - 70
That should work fine for 1920 x 1080 @ 60Hz
 
  


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