[Bug 246269] Re: Switched from vesafb to uvesafb, but uvesafb can't work without v86d

Christopher 246269 at bugs.launchpad.net
Sun Dec 23 15:07:34 UTC 2012


I'm also getting the FATAL: error inserting vesafb, but it's not doing
any harm other than slowing my boot time by several seconds.

12.10 on AMD 32 bit kernel 3.5.0-21.

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Title:
  Switched from vesafb to uvesafb, but uvesafb can't work without v86d

Status in “initramfs-tools” package in Ubuntu:
  Invalid
Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux-meta” package in Ubuntu:
  Invalid
Status in “initramfs-tools” source package in Intrepid:
  Invalid
Status in “linux” source package in Intrepid:
  Fix Released
Status in “linux-meta” source package in Intrepid:
  Invalid

Bug description:
  Binary package hint: linux-image-2.6.26-3-generic

  After grub selection there is no any output to screen till gdm start.
  This happens if VESA mode selected in grub command (vga=792 for example). VGA modes work well.

  This problem exists only in 2.6.26-3 kernel.
  As I can see kernel had switched to uvesafb from vesafb.

  There is another bug (https://bugs.launchpad.net/ubuntu/+source/linux-
  meta/+bug/189621) about missing v86d, which is needed for uvesafb to
  work correctly.

  ~$ lsb_release -rd
  Description:	Ubuntu intrepid (development branch)
  Release:	8.10

  $ uname -a
  Linux astar-laptop 2.6.26-3-generic #1 SMP Wed Jul 2 21:56:15 UTC 2008 i686 GNU/Linux

  
  GeForce 8400M GS installed on my laptop. 

  Forum threads:
  http://ubuntuforums.org/showthread.php?t=850172
  http://ubuntuforums.org/showthread.php?t=850361

  WORKAROUND

  ( this workaround is similar as in comment #42 )
  1) install v86d
  2) create /etc/modprobe.d/uvesafb
     options uvesafb mode_option=1280x800-32 mtrr=3 scroll=ywrap
  4) append
     blacklist uvesafb
   to /etc/modprobe.d/blacklist-framebuffer
  3) append
     uvesafb
   to /etc/modules
  4) run
     update-initramfs -u 
  5) reboot.

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