Problem using a large flat screen monitor connected by DVI
Hello! I am using Suse Professional 9.2. I'm trying to run an X Window display on a 37 inch flat screen monitor (Sharp LC-M3700) connected by DVI to a ATI Radeon 7000/VE graphics card. It works, but not at the highest available resolution. According to the manual, the monitor can display 1366x768 pixels. It works perfectly using an 1024x768 resolution, for example. If I use the desired resolution, the monitor simply displays "out of range". I've tried both sax2 (also with the --vesa switch with the desired resolution as a parameter) and playing around with XF86Config by hand, even trying different "Modelines". One problem seems to be that the X Window System does not properly recognize the resolution of the screen. In /var/log/Xorg.0.log I find a line (II) RADEON(1): Panel size found from DDC: 1024x768 So the X Window System thinks that the monitor tells it that it has a maximum resolution of 1024x768, which is actually not true. That's probably the cause for the message (WW) RADEON(1): Mode 1366x768 is out of range. (WW) RADEON(1): Valid modes must be between 320x200-1024x768 a few lines later. Is there an explanation for the wrong value or a way to override it? I can not find a way to define another resolution at the monitor. Any help or a hint into the right direction is much appreciated! Best regards Manfred Härtel -------------------------------------------------------------------------------------------- Diese Mail wurde von Lotto Rheinland-Pfalz automatisch auf Viren, SPAM und andere unerwuenschte Inhalte ueberprueft.
Hallo Manfred, man kann im xorg.cfg-File den DDC-Support abschalten (siehe www.X.org), genauer kann ich es Dir aber nicht sagen, Du solltest in den Readme's ebendort nachsehen. Leider leider wird SuSE immer mehr wie M$, wehe dem, der es besser weis als das System zu wissen meint .... Viel Erfolg, bis dann Dieter Am Montag, 21. März 2005 16:36 schrieb Manfred Haertel:
Hello!
I am using Suse Professional 9.2. I'm trying to run an X Window display on a 37 inch flat screen monitor (Sharp LC-M3700) connected by DVI to a ATI Radeon 7000/VE graphics card.
It works, but not at the highest available resolution. According to the manual, the monitor can display 1366x768 pixels. It works perfectly using an 1024x768 resolution, for example.
If I use the desired resolution, the monitor simply displays "out of range". I've tried both sax2 (also with the --vesa switch with the desired resolution as a parameter) and playing around with XF86Config by hand, even trying different "Modelines".
One problem seems to be that the X Window System does not properly recognize the resolution of the screen.
In /var/log/Xorg.0.log I find a line
(II) RADEON(1): Panel size found from DDC: 1024x768
So the X Window System thinks that the monitor tells it that it has a maximum resolution of 1024x768, which is actually not true. That's probably the cause for the message
(WW) RADEON(1): Mode 1366x768 is out of range. (WW) RADEON(1): Valid modes must be between 320x200-1024x768
a few lines later.
Is there an explanation for the wrong value or a way to override it?
I can not find a way to define another resolution at the monitor.
Any help or a hint into the right direction is much appreciated!
Best regards Manfred Härtel
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On Mar 21, 05 19:55:12 +0100, Dieter Jurzitza wrote:
Hallo Manfred, man kann im xorg.cfg-File den DDC-Support abschalten (siehe www.X.org), genauer kann ich es Dir aber nicht sagen, Du solltest in den Readme's ebendort nachsehen. Leider leider wird SuSE immer mehr wie M$, wehe dem, der es besser weis als das System zu wissen meint ....
- suse-xfree86 is an english speaking list (unless you wanted to reply privately, of course) - I don't know what SuSE is involved with this 'problem', it exists with upstream Xorg as well, so what's your point
I am using Suse Professional 9.2. I'm trying to run an X Window display on a 37 inch flat screen monitor (Sharp LC-M3700) connected by DVI to a ATI Radeon 7000/VE graphics card.
It works, but not at the highest available resolution. According to the manual, the monitor can display 1366x768 pixels. It works perfectly using an 1024x768 resolution, for example.
- All options that can be used for specifying the monitor are documented (man xorg.conf, search for Monitor, you will need to specify HorizSync, VertRefresh, DisplaySize), those for overriding autodetect could be documented better (this is driver specific, man radeon, you need 'Option "NoDDC"'). You very well may have to add a Modeline for your unusual mode as well. I agree that we would need a better FAQ for Xorg. - Your problem is twofold: - Your monitor is lying to the graphics card This is a common problem (I don't know what's so damn hard to get information values right) and can only be overcome with a large database with the correct values. Appearantly, your monitor is not included. - 1366x768 is no Vesa standard mode You will have to specify a Modeline to tell the Xserver about the timings to use. There are a couple of possibilities, SaX2 can do this for you IIRC. You already tried some if I read you correctly.
If I use the desired resolution, the monitor simply displays "out of range". I've tried both sax2 (also with the --vesa switch with the desired resolution as a parameter) and playing around with XF86Config by hand, even trying different "Modelines".
1366x768 is no vesa mode, no chance.
One problem seems to be that the X Window System does not properly recognize the resolution of the screen.
In /var/log/Xorg.0.log I find a line
(II) RADEON(1): Panel size found from DDC: 1024x768
Please try a 'hwinfo --monitor' from runlevel 3 (!).
If the monitor still says its maximum resolution is 1024x768, it is
lying.
Hope this helps a bit
Matthias
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Matthias Hopf
Hello! Thanks everybody who helped, the problem is solved now. I can fill the whole screen at least with a resolution of 1280x768 now, haven't tried hard to reach 1366x768 yet. The problem was really the PanelSize given by the monitor, which is simply wrong, which can be overriden by the PanelSize-Parameter in the "Device" section. A "Modeline" must still be specified but can be calculated by appropriate tools. Best regards Manfred Härtel -------------------------------------------------------------------------------------------- Diese Mail wurde von Lotto Rheinland-Pfalz automatisch auf Viren, SPAM und andere unerwuenschte Inhalte ueberprueft.
participants (3)
-
Dieter Jurzitza -
Manfred Haertel -
Matthias Hopf