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Old 05-02-06, 04:15 AM   #1
Belegdol
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Join Date: Oct 2004
Posts: 118
Default PAL VertRefresh question

Hi. Right now I am using TwinView for my TV-Out output. The respective xorg.conf fragment looks as follows:
Quote:
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView"
Option "MetaModes" "1600x1200, NULL; 1280x960, NULL; 1024x768, NULL; 1024x768, 1024x768; 800x600, NULL"
Option "TwinViewOrientation" "RightOf"
Option "SecondMonitorHorizSync" "30-50"
Option "SecondMonitorRefreshRate" "60"
Option "TVStandard" "PAL-B"
Option "TVOutFormat" "SVIDEO"
Option "ConnectedMonitor" "CRT-0, TV-0"
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1600x1200" "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1600x1200" "1400x1050" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection
EndSection
I have, however, hit several problems with this config. Firstly. KDE starts at 2048 x 1200 desktop, so I have to do xrandr -s 0 before my desktop is usable. Secondly, once two displays are enabled, xvideo is not usable till X restart - the video window becomes blue. According to the readme, xvideo for twinview should be replaced with blitting, but it is apparently not. Finally, I am unable to “fullscreen” a movie on only one screen, it is always panned through the two displays. So I decided to switch to xinerama. My question is, what should be the VertRefresh rate for PAL? 50 or 60 Hz? Greets.
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Old 05-02-06, 01:35 PM   #2
pe1chl
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Posts: 1,026
Default Re: PAL VertRefresh question

When you have two separate screens, like a monitor and a TV, and you want to use them for different purposes (i.e. not as one big X desktop) it is IMHO best to stay clear of both Twinview and Xinerama.

Just configure two independent screens as described in an appendix of the README. Then you won't have problems fullscreening movies, or funny desktop behaviour.

When you are in a European PAL country (not Brazil or similar) you the vertical refresh rate is 50 Hz. However, it seems that TV-OUT is special and requires funny parameters that do not reflect reality. So it may be that it wants to see 60 Hz and then ignores it.
(My experience with TV-OUT is dated, maybe this has changed)
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Old 05-02-06, 02:39 PM   #3
Belegdol
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Posts: 118
Default Re: PAL VertRefresh question

That's what I tried to do. Now I''m running two screens with xinerama, because I'm experiencing some problems described in this thread.

Cutting the long story short, windowmanagers starts in both desktops causing for instance apps in ~/.kde/share/Autostart to start twice.

Last edited by Belegdol; 05-02-06 at 02:54 PM.
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Old 05-02-06, 03:50 PM   #4
Thunderbird
 
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Location: Netherlands, Europe
Posts: 2,105
Default Re: PAL VertRefresh question

In your 'working' twinview setup you can also fullscreen to a single device. For instance mplayer contains a xinerama switch which you can use. I guess xine and other players supports something similar. (the xrandr -s 0 can be executed from lets say .xinitrc; for instance kde even has a setting in its control center to select a certain mode when you login; gnome might have something like this too)
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Old 05-02-06, 04:10 PM   #5
Belegdol
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Posts: 118
Default Re: PAL VertRefresh question

The -xineramascreen switch was not working for me with twinview and RightOf orientation, moreover, the windows were maximised along two screens. It looks like xinerama was not enabled. I'd stick with dual X screens, but it would be nice to solve the remaining problem.
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Old 05-02-06, 04:27 PM   #6
pe1chl
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Default Re: PAL VertRefresh question

Although I fully agree that KDE has some bugs when running on two screens, I do not encounter the problem you describe....

What I do encounter is the fact that some settings that you would want to have separate are shared between the screens, for example fontsize.
Also, some settings on the second screen are only made when the windowmanager is restarted (while the same settings have immediate effect on the first screen). Examples are attributes of the "panel" (taskbar).
I also find it irritating that you cannot delete the trashcan on the second screen. I have an autohiding panel on the second screen, which is my TV, and want the screen to be as empty as possible. The trashcan disappears when it is deleted but re-appears at the next login.

Other than this I am quite happy with KDE running on two screens.
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Old 05-04-06, 04:14 PM   #7
Belegdol
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Posts: 118
Default Re: PAL VertRefresh question

I've ended up with two x screens and xinerama. The last minor issue is that when tv is off/disconnected while X is starting, it is not detected. I've put ConnectedMonitor option ito ServerLayout section, but it has not helped. Suggestions are welcome.
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