framebuffer resolution wrong when xdm starts

umibozu_it · n00b Joined: 26 Feb 2007 Posts: 2

Hello everybody,

i'm experiencing a weird problem when xdm start. basically the resolution of the framebuffer console (which is ok during boot) is changed and becomes unreadable. the screen shows the console repeated horizontally 4 or 5 times with unreadable characters. this happens only when xdm is started, booting the system without the desktop environment leaves the console to a right resolution... does anybody know how to solve the problem? thanks!

modified_bessel · Posted: Mon Feb 26, 2007 1:29 pm Post subject:

Check xorg.conf. In the Screen section, you will have some appropriate subsection for the default depth you are using, like

umibozu_it · n00b Joined: 26 Feb 2007 Posts: 2

hi, thanks for answering

in my xorg.conf i only have 1 mode (1280x800) which is the resolution i run in gdm and even in the vesafb framebuffer (before x starts)

i've tried adding a general "safe" mode but nothing changed, after the display manager is started the console becomes totally unreadable... i don't know what could be the problem, it looks like X tries to set a resolution not supported by the monitor but the monitor itself doesn't flicker like when you try to set a refresh rate higher than its capabilities... so the problem might even not be the resolution,but maybe the console font X sets up... i really don't know where to look though. i remember the problem showing up when i was trying to set up boot themes...
thanks

modified_bessel · Posted: Wed Feb 28, 2007 5:52 pm Post subject:

Yeah, I also had endless problems a couple of years ago trying to change boot themes!

My problem is switching an OS between 2 boxes each with different screen sizes (modes) and with vesafb it matters which mode appears first in xorg.conf (1024x768 or 640x480); clearly we don't have the same problem. Sorry then that I can't offer much help here, except maybe to try to re-establish the original boot screen.........