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

hggdh hggdh2 at gmail.com
Wed Sep 24 15:32:35 UTC 2008

** Description changed:

  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:
+ ( 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.

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