This change was made by a bot.
** Changed in: linux (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1440446
Title:
Keyboard does not respond/scrambled video
Status in linux package in Ubuntu:
Confirmed
Bug description:
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Kernel 3.13.0-48-generic
I expected to be apple to boot to the password prompt for my encrypted root
(and beyond) with correct graphics.
Instead I found that my keyboard was not recognised after grub, so I am not
able to decrypt my root or login
More detailed explanation:
I have Ubuntu installed on my 17'' core-duo intel imac, with an encrypted
root partition.
Version 12.04 with kernel 13.5.0-17-generic worked ok, but I updated to the
LTS version 14.04.
The system now freezes before asking for my encryption password when booting
(I am using EFI with grub2)
with my old kernel (13.5.0-17-generic) and with no args on the kernel command
line. If I put nomodeset the boot
progresses to the encryption password and I can successfully login, however
the video is completely scrambled (I literally cannot
make out anything). Having tried many ways to fix the video, I tried the
latest kernel (3.13.0-48-generic). In this case
the boot gets to the password and the graphics appear to be ok, but the
keyboard/mouse do not respond. Again I tried many fixes, unsuccesfully. I
installed the extras so as to have usbhid, mac_hid etc, and found that the
behaviour now reverted precisely to that outlined above for 13.5.0-17-generic;
that is scrambled graphics but successful login (with nomodeset), and freezing
before
reaching the password prompt (without nomodeset).
I tried manually adding only the hid modules to my
initrd.img-3.13.0-48-generic built prior to install of extra, but found
graphics again ok but still no keyboard !
This report was made via a ssh session after booting with the
scrambled video.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-48-generic 3.13.0-48.80
ProcVersionSignature: Ubuntu 3.13.0-48.80-generic 3.13.11-ckt16
Uname: Linux 3.13.0-48-generic i686
ApportVersion: 2.14.1-0ubuntu3.8
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: lightdm 1678 F.... pulseaudio
admin 2808 F.... pulseaudio
Date: Sun Apr 5 10:33:58 2015
HibernationDevice: RESUME=UUID=b24198c5-2cbc-45f2-8535-71569a8d69fa
InstallationDate: Installed on 2013-07-28 (616 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release i386 (20121017.2)
IwConfig:
lo no wireless extensions.
eth2 no wireless extensions.
MachineType: Apple Computer, Inc. iMac4,1
ProcEnviron:
LANGUAGE=en_AU:en
TERM=xterm-color
PATH=(custom, no user)
LANG=en_AU.UTF-8
SHELL=/bin/bash
ProcFB: 0 EFI VGA
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-48-generic
root=/dev/mapper/ubuntu-root nomodeset loglevel=7
PulseList:
Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not
accessible: Permission denied
No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
linux-restricted-modules-3.13.0-48-generic N/A
linux-backports-modules-3.13.0-48-generic N/A
linux-firmware 1.127.11
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
UpgradeStatus: Upgraded to trusty on 2015-03-16 (19 days ago)
dmi.bios.date: 10/12/06
dmi.bios.vendor: Apple Computer, Inc.
dmi.bios.version: IM41.88Z.0055.B08.0610121350
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Mac-F42786C8
dmi.board.vendor: Apple Computer, Inc.
dmi.board.version: PVT
dmi.chassis.asset.tag: Asset Tag
dmi.chassis.type: 13
dmi.chassis.vendor: Apple Computer, Inc.
dmi.chassis.version: Mac-F42786C8
dmi.modalias:
dmi:bvnAppleComputer,Inc.:bvrIM41.88Z.0055.B08.0610121350:bd10/12/06:svnAppleComputer,Inc.:pniMac4,1:pvr1.0:rvnAppleComputer,Inc.:rnMac-F42786C8:rvrPVT:cvnAppleComputer,Inc.:ct13:cvrMac-F42786C8:
dmi.product.name: iMac4,1
dmi.product.version: 1.0
dmi.sys.vendor: Apple Computer, Inc.
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