problem with vidcontrol

Javier Matos javierlu at
Mon Nov 14 10:07:39 GMT 2005

Thank you for your answer Gilbert. I find that the problem is in a bug in 
kernel or in my motherboard because when I use vidcontrol to change the 
resolution with only one module it works fine... but when I put the second 
module in the motherboard... it fails

I notify to FreeBSD the problem writing it in problem reports

>> # Options to change console resolution
>> options    VESA
>> options    SC_PIXEL_MODE
> I have done the same on my laptop. Well, I only compiled a new kernel
> with SC_PIXEL_MODE and I load the VESA module on boot.
>> The problem is that when I try to change to a graphic resolution like
>> 800x600x16, 1024x768x16 or 1280x1024x16 my computer hangs and the box
>> sometimes start to make a continuous noise with the internal speaker.
> I assume you did use vidcontrol -i mode and then you are trying to
> change the raster resolution using :
> vidcontrol MODE_XXX
> where XXX is the code for the mode you want, and which appears as
> supported when using "vidcontrol -i mode" ?
>> When I use vidcontrol -i mode I can see that the modes that I try are
>> supported by my hardware, modes like 273, 276, 279 and 282.
> Some won't work. On my own laptop (Thinkpad IBM X30) I have some modes
> that either give me a black screen while others give me a faint display
> with flickering vertical refresh.
> I use the real resolution from the 12 " screen and it works : 1024x768
> using 16 bit (works in 32 bit also).
> Have you loaded on this terminal a 8x8 font so the display is OK when
> you change the resolution too ?
> --
> unzip ; strip ; touch ; grep ; finger ; mount ; fsck ; more ; yes ;
> fsck ; umount ; sleep 

More information about the freebsd-questions mailing list