At the recent platform rally, we determined that this is happening
because GRUB is failing to get EDID information (1024x600) due to an
internal logic bug, and as a result is using VBE Flat Panel information
(1024x768), which exceeds the size of the screen; this is more or less
readable in GRUB, but confuses the kernel.
I'll fix GRUB to use EDID information properly, which I think will end
up as 800x600 since the VBE BIOS doesn't actually expose a 1024x600 mode
despite advertising it as the preferred mode in EDID. The bug that the
kernel fails to reprogram registers correctly when the boot loader
leaves it in 1024x768 mode on this machine remains.
** Changed in: grub2 (Ubuntu)
Importance: Undecided => High
** Changed in: grub2 (Ubuntu)
Status: New => Fix Committed
** Changed in: grub2 (Ubuntu)
Assignee: (unassigned) => Colin Watson (cjwatson)
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/693093
Title:
[i945gme] 2.6.37-10.24: Black Screen on Boot
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
