Urgent help needed: GRUB doesn't show up on a 19" TFT

Mon Nov 7 16:15:47 UTC 2005

vbeset 0x122 (800x600x32) would be fine. Where should I write it in grub.conf?

On 11/7/05, hometoast <hometoast at gmail.com> wrote:
> I'll have to take a look at this when I get home to my linux box.  try
> "flying blind" when you boot and press 'c' to enter command line mode and
> tree a few vbeset commands to see if you can't get it to change to something
> useful.  I didnt post this to the group because this is surely no real
> answer.
>
>
> On 11/7/05, Gábor Iglói <mdjake at gmail.com> wrote:
> >
> > Thank you for your quick answer. Let me stress out the core of the
> problem:
> >
> > The 19" TFT is a cheap 1913 (not 1912) ACER which is because it was
> > 40$ cheaper than 1912 is not capable of displaying anything in 640x480
> > - so text mode even. It is capable of displaying 800x600, 1024x768,
> > 1280x1024 only. Anything that is in 640x480 - text screens like Breezy
> > installation, even the beginning of Windows XP setup, virtual
> > terminals 1-6 cannot be displayed, the monitor says MODE NOT
> > SUPPORTED. I can see the BIOS screen fortunately because it is a
> > non-standard 720 x something. I had to install OSes with the help of a
> > separate monitor.
> >
> > Problem is that I can't see the GRUB menu at all - only MODE NOT
> SUPPORTED.
> >
> > Breezy can boot but I can't see the booting process (which is in
> > 640x480 too). I can circumvent this by removing kernel parameter
> > splash and replace it with vga=789. BUT I cannot see the GRUB
> > dual-boot screen at all. Poor TFT.
> >
> > I have also downloaded a splash for GRUB from gnome-look.org
> > (ubuntu_grub_splash.xpm.gz) and I set up GRUB to use it but since it
> > is 640x480 too I cannot see that either (only on the other CRT monitor
> > - the previous monitor).
> >
> > I know however that GRUB can be displayed on this TFT too because the
> > previous Linux distro's GRUB could bee seen on it (but only the
> > graphical one, text mode also didn't worked there) - I think it was in
> > 800x600, maybe 720 x something like BIOS.
> >
> > I do not know how to set up GRUB boot screen not to use 640x480.
> >
> > Here is my original menu.lst :
> >
> > # menu.lst - See: grub(8), info grub, update-grub(8)
> > #            grub-install(8), grub-floppy(8),
> > #            grub-md5-crypt, /usr/share/doc/grub
> > #            and /usr/share/doc/grub-doc/.
> >
> > ## default num
> > # Set the default entry to the entry number NUM. Numbering starts from 0,
> and
> > # the entry number 0 is the default if the command is not used.
> > #
> > # You can specify 'saved' instead of a number. In this case, the default
> entry
> > # is the entry saved with the command 'savedefault'.
> > default         saved
> >
> > ## timeout sec
> > # Set a timeout, in SEC seconds, before automatically booting the default
> entry
> > # (normally the first entry defined).
> > timeout         5
> >
> > ## hiddenmenu
> > # Hides the menu by default (press ESC to see the menu)
> > #hiddenmenu
> >
> > # Pretty colours
> > color cyan/blue white/blue
> >
> > ## password ['--md5'] passwd
> > # If used in the first section of a menu file, disable all interactive
> editing
> > # control (menu entry editor and command-line)  and entries protected by
> the
> > # command 'lock'
> > # e.g. password topsecret
> > #      password --md5 $1$gLhU0/$aW78kHK1QfV3P2b2znUoe/
> > # password topsecret
> >
> > #
> > # examples
> > #
> > # title         Windows 95/98/NT/2000
> > # root          (hd0,0)
> > # makeactive
> > # chainloader   +1
> > #
> > # title         Linux
> > # root          (hd0,1)
> > # kernel        /vmlinuz root=/dev/hda2 ro
> > #
> >
> > #
> > # Put static boot stanzas before and/or after AUTOMAGIC KERNEL LIST
> >
> > ### BEGIN AUTOMAGIC KERNELS LIST
> > ## lines between the AUTOMAGIC KERNELS LIST markers will be modified
> > ## by the debian update-grub script except for the default options below
> >
> > ## DO NOT UNCOMMENT THEM, Just edit them to your needs
> >
> > ## ## Start Default Options ##
> > ## default kernel options
> > ## default kernel options for automagic boot options
> > ## If you want special options for specifiv kernels use kopt_x_y_z
> > ## where x.y.z is kernel version. Minor versions can be omitted.
> > ## e.g. kopt=root=/dev/hda1 ro
> > # kopt=root=/dev/hda2 ro
> >
> > ## default grub root device
> > ## e.g. groot=(hd0,0)
> > # groot=(hd0,1)
> >
> > ## should update-grub create alternative automagic boot options
> > ## e.g. alternative=true
> > ##      alternative=false
> > # alternative=false
> >
> > ## should update-grub lock alternative automagic boot options
> > ## e.g. lockalternative=true
> > ##      lockalternative=false
> > # lockalternative=false
> >
> > ## altoption boot targets option
> > ## multiple altoptions lines are allowed
> > ## e.g. altoptions=(extra menu suffix) extra boot options
> > ##      altoptions=(recovery mode) single
> > # altoptions=(recovery mode) single
> >
> > ## nonaltoption boot targets option
> > ## This option controls options to pass to only the
> > ## primary kernel menu item.
> > ## You can have ONLY one nonaltoptions line
> > # nonaltoptions=quiet splash
> >
> > ## controls how many kernels should be put into the menu.lst
> > ## only counts the first occurence of a kernel, not the
> > ## alternative kernel options
> > ## e.g. howmany=all
> > ##      howmany=7
> > # howmany=1
> >
> > ## should update-grub create memtest86 boot option
> > ## e.g. memtest86=true
> > ##      memtest86=false
> > # memtest86=false
> >
> > ## ## End Default Options ##
> >
> > title           Ubuntu, kernel 2.6.12-9-386
> > root            (hd0,1)
> > kernel          /boot/vmlinuz-2.6.12-9-386 root=/dev/hda2 ro quiet splash
> > initrd          /boot/initrd.img-2.6.12-9-386
> > savedefault
> > boot
> >
> > ### END DEBIAN AUTOMAGIC KERNELS LIST
> >
> > # This is a divider, added to separate the menu items below from the
> Debian
> > # ones.
> > # title         Other operating systems:
> > # root
> >
> >
> > # This entry automatically added by the Debian installer for a non-linux
> OS
> > # on /dev/hda1
> > title           Windows XP
> > root            (hd0,0)
> > savedefault
> > makeactive
> > chainloader     +1
> >
> > --
> > ubuntu-users mailing list
> > ubuntu-users at lists.ubuntu.com
> > http://lists.ubuntu.com/mailman/listinfo/ubuntu-users
> >
>
>
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