Hi,
My friend installed linux on his old notebook (dsl or deli, don't remember), and we came up with one problem: his screen could only handle 800x600 resolution, but the boot screen used 1024x768 or something. So when the login prompt should show, its way below the screen. (no, the screen doesn't clear before the login prompt.) So, do anyone know how to change this resolution?
Exactly how to fix this depends on unreported details.
As a general matter, your friend is running a Linux install that switches to the console framebuffer (vesafb - the one with the little Tux at the top, initially) after the kernel boots, and (I'm guessing) switches to something like a 40-line mode. But your friend's laptop doesn't support the standard VGA-mode switching. This is all a guess, of course ... I'm just trying to make clear what I interpret your sketchy description to be about.
One possible fix is at the lilo prompt, if your friend can intervene there. Try adding "vga=NORMAL" (or maybe "vga=0x301") and see if that helps. One of these should get you to 24-line (640x480) mode.
If not, and he or you can somehow manage to login, you can edit /etc/lilo.conf to add the appropriate vga= call to the default lilo boot. (Then run the Linux app lilo to update the lilo booter.)
The long term solution is probably not to use the framebuffer. That might mean changing kernels, if this feature is compiled in, or stopping the kernel from loading the vesafb.o module during boot/init. Can't be more specific without knowing a lot more about the specifics of the Linux installation.
In general, read up on this in the kernel documentation, at /[path_to_kernel_source]/Documentation/fb/vesafb.txt .
If you post a followup question, please provide specifics about the system.
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