Display settings.

Devil_1 · #1 5th November 2005, 04:16 AM

I'm very new to Linux. I have Red Hat Fedora Core 1 on an older system I had lying around. I have a 17 in monitor, and I set the display settings to high for the monitor.. Nowe when I try to boot up, it will run through the boot sequences, then the screen goes blank, and a Sync error comes up... Is there any way to fix this? Thanks.

Optimal Aurora · #2 5th November 2005, 04:31 AM

I don't know how you would solve that problem now that you aren't able to get to the screen resolution setting under desktop or on the first boot up, setup screen. I do know that the only way I solved that problem was to reinstall FC4 and then at first boot up select my monitor type which for me is a Gateway VX700 with a max resolution of 1280x1024 at 60Hz. However, they list as being 16??x???? which is well beyond my monitors range, although, you can tell it that you want to use 1024x768 with millions of colors. If you can get to the desktop screen then click on desktop at the top and Preferences and Screen Resolution then you can say I want to use 1024x768 at whatever frequency you want.

Sorry that, that probably won't help your situation but it could help someone else.

Optimal Aurora · #3 5th November 2005, 04:34 AM

Hay, you can't by any chance see a terminal screen or have any access to fedora? There is a way to reset Xserver.xorg which I was thinking you might be able to do.

Also do you have the installation disk. You can use it to boot Fedora into a rescue mode, which might allow you to access the screen resolution setting or access a terminal.

Devil_1 · #4 5th November 2005, 04:34 AM

I know nothing about linux, so forgive me if I'm wrong... is there any kind of a "safe mode" or any way to change these kinds of settings in the backend? away from the GUI?

Devil_1 · #5 5th November 2005, 04:35 AM

terminal screen or have any access to fedora? is this the screen taht comes up when you first start up the system. gives you so many seconds to choose the OS?

Devil_1 · #6 5th November 2005, 04:36 AM

I do have the instalation disk.

Optimal Aurora · #7 5th November 2005, 04:37 AM

Me and you submitted about the same time.

Yes if you have the installation disk:
-insert it into the drive and boot up the computer.
-you will be given the option of pressing 'enter' or F1-F5 you want to press F5
-From there you will just have to read the directions on the screen because I haven't had to use that section of the installation disk yet.

Devil_1 · #8 5th November 2005, 04:39 AM

I'll give it a shot thanks.

Optimal Aurora · #9 5th November 2005, 04:43 AM

You are welcome and good luck, if that doesn't work. you may have to reinstall Fedora

Devil_1 · #10 5th November 2005, 04:45 AM

nope, didn't work... LOL

Optimal Aurora · #11 5th November 2005, 04:47 AM

walk me through what you just did, okay.

Devil_1 · #12 5th November 2005, 04:49 AM

I'd have to do it again... I'm using a KVM so I can't do both at the same time.

Devil_1 · #13 5th November 2005, 04:50 AM

screw it. I'll upgrade it to FC4

smfinley · #14 5th November 2005, 04:52 AM

When you get to the graphical boot screen type "a", hit enter, type a space and a "3" and hit enter. (In doing this you will be appending a 3 to the end of the kernel line.) This will boot you up to runlevel 3 (text mode). Log in as root. Type "vi /etc/X11/xorg.conf", hit enter, hit the insert key. With the arrow and backspace keys navigate to the appropriate lines to edit your xorg.conf file as follows. Scroll down to the "Monitor" section. Find the "HorizSync" line and enter your monitor's supported horizontal frequency range. The line should look something like "HorizSync 30.0 - 70.0". Enter your monitor's supported vertical frequency range opposite "VertRefresh". The line should look something like "VertRefresh 50.0 - 160.0". Scroll down to the "Screen" section and opposite each instance of "modes" enter you monitor's supported pixel resolution, starting with the highest. The line should look something like "Modes "1024x768" "800x600" "640x480"". You should be able to get these values from your monitor's manual or from a search for your monitor by manufacturer and model number on the Internet. When you are done hit the escape key and type ":wq" (this means "write", "quit"). Hit enter. Type "init 5" and hit enter. This will boot you into graphical mode. When you get there click "Desktop" > "System Settings" > "Display". Type your root password in the dialog box presented and hit enter. Click the down arrow on the right of the "Resolution:" box and select your preferred pixel resolution. Click the down arrow on the right of the "Color Depth:" box and select your preferred color depth. Click "OK". Log out and log back in. Click "Desktop" > "Preferences" > "Screen Resolution". Click the down arrow on the right of the "Resolution:" box and select your preferred pixel resolution. Click the down arrow on the right of the "Refresh rate:" box and select the highest refresh rate available. A refresh rate of 85 Hz or more will decrease noticeable flicker significantly and may eliminate it completely. Click "Apply". Log out and log back in.

Optimal Aurora · #15 5th November 2005, 04:59 AM

Hay, Devil_1 try what smfinley just said. Personally, I don't see any other way to help you. I was looking through my FC3 unleashed book and haven't seen anything else that might help you.

Sorry...