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Fedora 5 Can't change my resolution

S

slagment

Member
The correct video card and monitor show up under administration/display. The only option i get is 640x480. I got a samsung 990DF monitor and a ATI Radeon 850xtpe video card. I have tried using the display options, change resolution option, and the command line randr command. 640x480 is all i get. What should i do?

Thanks
 
I'm having the exact same problem with FC5, I have the same card so it looks like the same issue. When Linux is booting, do you get any PCI errors? I have a couple so I think it's a problem with it properly detecting my PCI Express slot properly. I have posted this issue over at fedora forum, but have not had a reply:

Link

There are a few threads over there about getting the opengl portion of the card working properly in FC5, but I haven't tried it out extensively because I'm using the 64bit version of FC5 and I'm not sure that even if you get the drivers installed that it will fix this particular issue.


edit: oops I meant FC5 not RC5.
 
You need to add more modes to your xorg.conf (/etc/x11/xorg.conf).

From the link above, the area to add more resolutions in would be under your monitor's config options like so:

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 16
Modes "1280x1024" "1024x768" "800x600" "640x480"
EndSubSection
SubSection "Display"
Viewport 0 0
Depth 24
Modes "1280x1024"
EndSubSection
EndSection

Then the options will show up in the GUI to change them (I'm not sure if that's immediate or you have to restart X to do it, though).

Edit: About drivers, you should be able to do this all purely with the vesa driver. The Ati driver *shouldn't* matter I don't think, but it's certainly possible although I've never experienced it.
 
I changed my xorg.conf and added the modes, but the modes still won't show up as options. I can't even change the Hz of my monitor. I can select different resolutions under display, but nothing happens even after i save and restart. I can't even select a different resolution under Screen Resolution.
 
I have also messed around with my xorg.conf file and added all sorts of resolutions it just doesnt do anything. I even tried the VESA driver, but X will not load at all so I switched back to the radeon driver. I still believe it is a hardware issue with the pci express slot which is why it is detected as unknown device 5d4f under my xorg.conf file.
 
slagment: What brand Radeon card do you have? I have a Sapphire GTO 2 that I modded so it get to x850xtpe speeds. I wonder if that may have something to do with this problem?
 
I don't know what is going on, but maybe it's not detecting your monitor's refresh rates correctly. If it can't figure out what the correct settings it needs to use then it defaullts to something slow and low resolution to protect older monitors that can be hurt by to-fast refresh rates.

Check your X's configuration and see if it has the correct values, if not putting them in can't hurt.

Find the section of /etc/X11/xorg.conf that looks similar to this:
Section "Monitor"
Identifier "Generic Monitor"
HorizSync 30.0 - 96.0
VertRefresh 50.0 - 160.0
Option "DPMS"
EndSection

The important parts are the HorizSync and VertRefresh. If those feilds are absent you can add them.. just make sure that your spelling them correctly. Also capitalization matters. Don't worry about other things.

Also when editing configuration files make sure to make a backup copy of the original one so that if you make a mistake you can always undo the change by copying the old configuraiton over the modified one.

Then log out and hit ctrl-alt-backspace (to this 3 or so times and it will shut X off completely sometimes, doesnt' realy hurt anything though) or restart the computer or whatever and see if it made a difference.

Don't know if that is the problem your dealing with though.
 
Those lines already are in the xorg.conf.

Analogsoul- I have an ATI x850xtpe, I think your right, and the problem has something to do with the card or the pci-e slot.




 
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