[Bug 568721] [NEW] linux crashes (no splash screen) when use KVM switch

[Richard Reid]

Public bug reported:

I have a mixture of systems (Intel and AMD CPUs, Intel, AMD, Nvidia mb chipsets) connected together with an Airlink101 4-port KVM switch. All work fine with lucid (as of 4/22/2010) except systems with Intel Clarkdale CPUs and Intel H55 mb chipsets. These systems run as far as the grub menu, but after that no splash screen, just blank screen and after about 10 secs the monitor goes into standby. Also I can not connect with these systems via SSH. If after the grub menu I switch the KVM switch to another system, wait 20 secs and then switch back to the Clarkdale/H55 system I find it has booted to the desktop but has not idea what monitor I am using. If I boot the system with the monitor connected directly to the system (leaving the keyboard and mouse connected through the KVM switch) then every thing works fine. Fedora 13 beta works the same way. Ubuntu 9.10 livecd will boot , but only to the command line and video is flaky (I think because the intel video driver doesn't understand the Clarkdale GPU).
If you need more info I warn you I am a linux newby, but I follow directions well.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-21-generic 2.6.32-21.32
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  richardr   1192 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfbff8000 irq 22'
   Mixer name	: 'Intel G45 DEVIBX'
   Components	: 'HDA:10ec0889,1458a022,00100004 HDA:80862804,80860101,00100000'
   Controls      : 47
   Simple ctrls  : 25
Date: Thu Apr 22 14:52:48 2010
HibernationDevice: RESUME=UUID=b956c28d-a38d-46aa-9bb0-185b90f7bd58
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Release Candidate amd64 (20100419.1)
IwConfig:
 lo        no wireless extensions.
 
 eth0      no wireless extensions.
MachineType: Gigabyte Technology Co., Ltd. H55M-UD2H
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=6d021b25-4ba9-44ef-968f-142e4bd6955e ro quiet splash
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 
SourcePackage: linux
dmi.bios.date: 01/07/2010
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F5m
dmi.board.name: H55M-UD2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF5m:bd01/07/2010:svnGigabyteTechnologyCo.,Ltd.:pnH55M-UD2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnH55M-UD2H:rvr:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: H55M-UD2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug graphics lucid needs-upstream-testing

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linux crashes (no splash screen) when use KVM switch
https://bugs.launchpad.net/bugs/568721
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