Display fails to correctly initialize if keyboard is not connected during boot

[Mikko Rantalainen]

Binary package hint: xorg

Steps to reproduce:

1. Shut down the computer if running.
2. Disconnect USB keyboard connector (it does not matter if USB mouse is connected or not)
3. Boot Ubuntu 10.04 LTS

Expected results:

System boots up normally, one cannot login with GDM until a USB keyboard is connected (because password cannot be typed without a keyboard).

Actual results:

System boots up to black screen / invalid scan frequency / DPMS power off / disconnected DVI port (I don't know because I cannot diagnose the actual problem - at least my display goes to sleep and does not alert about invalid scan frequency). Hitting CTRL+ALT+F1 (or any other virtual console) does not end up getting the display up. I can still reboot the system with Alt+SysRq+B at will if I connect an USB keyboard..

Hardware:
Motherboard: Intel DG45ID
Display: HP ZR24w connected with a single link DVI connector running at 1920x1200@60 (correctly detected if booted with keyboard attached, uses KMS at least in normal boot process)
Keyboard: Logitech "Deluxe 250" (basic 105 button USB keyboard) normally connected via HP ZR24w
Mouse: Logitech RX 250 connected via HP ZR24w

Note that the problem occurs only if boot without USB keyboard connected at all so the problem is not using the display as USB hub. Also note that this motherboard does not have any legacy connectors (IDE or PS/2) and I've tried with both USB legacy support enabled and disabled.

I'd expect that the system could boot up without display, keyboard or mouse and any of those could be hot-plugged in. Perhaps I've misunderstood the currently supported features?

The system had originally a CRT display connected via DVI-I/VGA adapter and has been upgraded to current display with DVI-D connection.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.31-11.154-rt
Uname: Linux 2.6.31-11-rt x86_64
Architecture: amd64
Date: Sun Jan 16 21:09:56 2011
DkmsStatus: Error: [Errno 2] No such file or directory
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Alpha amd64 (20091008)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.31-11-rt root=UUID=9c704d29-1d50-4273-b689-bc88f2e8368d ro resume=UUID=609d4e01-862b-4199-bd45-ad8841f8c8c3 quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=en_DK.utf8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 02/09/2010
dmi.bios.vendor: Intel Corp.
dmi.bios.version: IDG4510H.86A.0127.2010.0209.1609
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: DG45ID
dmi.board.vendor: Intel Corporation
dmi.board.version: AAE27729-307
dmi.chassis.type: 3
dmi.modalias: dmi:bvnIntelCorp.:bvrIDG4510H.86A.0127.2010.0209.1609:bd02/09/2010:svn:pn:pvr:rvnIntelCorporation:rnDG45ID:rvrAAE27729-307:cvn:ct3:cvr:
system:
 distro: Ubuntu
 codename: lucid
 architecture: x86_64
 kernel: 2.6.31-11-rt

[penalvch (penalvch)]

Mikko Rantalainen, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-input-evdev REPLACE-WITH-BUG-NUMBER

Please note, given that the information from the prior release is already available, doing this on a release prior to the development one would not be helpful.

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Launchpad Janitor (janitor)]

[Expired for xserver-xorg-input-evdev (Ubuntu) because there has been no activity for 60 days.]