LinuxQuestions.org
Support LQ: Use code LQ3 and save $3 on Domain Registration
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Hardware
User Name
Password
Linux - Hardware This forum is for Hardware issues.
Having trouble installing a piece of hardware? Want to know if that peripheral is compatible with Linux?

Notices

Closed Thread
 
Search this Thread
Old 05-11-2009, 08:31 AM   #1
5555collier
LQ Newbie
 
Registered: Mar 2009
Posts: 14

Rep: Reputation: 0
No Display with Linkskey kvm


I'm running RHEL4 connected to a Linkskey kvm (dual dvi/ usb) and cannot get a display. I'm ssh'd into the machine, so I know it boots. I also know that kvm's act squirrely with Linux (i.e. if a Windows machine is the other machine on the switch then you have to boot Linux first to see the display). On this one the display won't come up at all. I've tried switching the cables around (dual dvi) and the Windows machine works fine through the switch (good switch, good monitors). Right now, I don't have the Windows machine connected at all. Any help here???/
 
Old 05-11-2009, 02:44 PM   #2
watcher69b
Member
 
Registered: Nov 2007
Location: /home/watcher69b
Distribution: RH, Fedora & CentOS
Posts: 539

Rep: Reputation: 39
in the /etc/X11/xorg.conf look to see how many screens are listed.

ie
Screen 0
mode 800x600

screen 1
mode 800x600


also check that the color depth, resolution and refresh rate are supported.
ie 800x600 depth 16 60htz
 
Old 05-11-2009, 03:13 PM   #3
farslayer
Guru
 
Registered: Oct 2005
Location: Willoughby, Ohio
Distribution: linuxdebian
Posts: 7,232
Blog Entries: 5

Rep: Reputation: 189Reputation: 189
Please only post your question in one Forum. This is a duplicate

http://www.linuxquestions.org/questi...th-kvm-725170/
 
Old 05-11-2009, 03:15 PM   #4
5555collier
LQ Newbie
 
Registered: Mar 2009
Posts: 14

Original Poster
Rep: Reputation: 0
Thanks "watcher69b" for your reply. I responded to this same post in Newbie forum. It's not the .conf file. I actually got both boxes (Windows and Linux) up at the same time by trying various boot/reboot connect/disconnect methods, but then the user rebooted the Linux machine and now it won't display again. Somehow it's probing for the monitor through the KVM and isn't liking what it sees. The BIOS screen won't even come up through the KVM. I have similar setups with DVI/USB KVM's throughout the building and all of them are a real pain. I have even tried a new KVM, booting Linux first, booting both Windows and Linux at the same time. This one really makes me pull my hair out. With more users going to two or three computers with a dual display setup, I really need to figure this out for future deployments. I guess I'll try to get in touch with the Linkskey guys and see if there is some simple solution or configuration for the KVM in Linux.
 
Old 05-11-2009, 03:27 PM   #5
farslayer
Guru
 
Registered: Oct 2005
Location: Willoughby, Ohio
Distribution: linuxdebian
Posts: 7,232
Blog Entries: 5

Rep: Reputation: 189Reputation: 189
My guess would be the Video card is unable to detect the Display settings through the KVM, because the KVM is blocking the DDC Probe. Hardcode the Resolution and refresh rate in the xorg.conf using a Modeline.

Last edited by farslayer; 05-11-2009 at 03:28 PM.
 
Old 05-11-2009, 06:49 PM   #6
jtshaw
Senior Member
 
Registered: Nov 2000
Location: Seattle, WA USA
Distribution: Ubuntu @ Home, RHEL @ Work
Posts: 3,892
Blog Entries: 1

Rep: Reputation: 66
Please post your thread in only one forum. Posting a single thread in the most relevant forum will make it easier for members to help you and will keep the discussion in one place. This thread is being closed because it is a duplicate.

Continue this here.
 
  


Closed Thread


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
No display with KVM 5555collier Linux - Newbie 8 05-13-2009 12:56 PM
KVM-85 and using SlackBuilds kvm (83) script Chuck56 Slackware 2 04-22-2009 02:24 PM
Only 1 of my monitors works with a dual Display KVM switch ColinL Linux - Hardware 0 01-02-2009 11:52 AM
Switched to KVm Switch, and now I can't Display jmorais Linux - Newbie 2 03-06-2007 03:39 PM
position display for KVM box lnx4me Ubuntu 1 03-28-2006 02:31 PM


All times are GMT -5. The time now is 04:31 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration