precisely every second boot fails
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
grub2 (Ubuntu) |
Expired
|
Undecided
|
Unassigned |
Bug Description
It does not matter whether the machine crashed last time, it was a clean reboot or shutdown, after the BIOS the display is black.
The boot process might continue, but I cannot see it. The machine (Lenovo T530) have full-disk LUKS protection, so I cannot figure out whether it would boot up and find a correct display. Some times I was trying to enter the LUKS password, but no sign of booting.
If after that I turn it off and turn it on again, the machine boots normally.
lspci says this about the display controller:
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09)
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: grub2 1.99-21ubuntu3.1
ProcVersionSign
Uname: Linux 3.2.0-24-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
Architecture: amd64
Date: Wed Aug 1 20:31:53 2012
ProcEnviron:
LANGUAGE=en
TERM=xterm
PATH=(custom, user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: grub2
UpgradeStatus: Upgraded to precise on 2012-04-30 (93 days ago)
Further test have shown that grub indeed works, only the display is black. X was the first thing seen. /bugs.launchpad .net/ubuntu/ +source/ xserver- xorg-video- intel/+ bug/993187/ comments/ 91 now I can see the display as soon as kernel takes it. Grub splash screen and menu still black.
After upgrading to kernel 3.3.6 per https:/