LinuxQuestions.org
Share your knowledge at the LQ Wiki.
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

Reply
 
Search this Thread
Old 07-11-2003, 03:41 AM   #1
thomask
LQ Newbie
 
Registered: Jun 2003
Location: London/Sevenoaks, England
Distribution: Fedora, mostly
Posts: 4

Rep: Reputation: 0
Roving horizontal lines


Dear All,
I am using a pretty old monitor, which I have managed to get to work at a res. of 800x600, but I had severe problems trying to get it up to the standard 1024x768.

I discovered that my monitor did not fit the standard VESA modes set by XFree86, so I had to put in the refresh rates manually.

When I managed to find these out from the manufacturer and key them into the Monitor control panel, I found that my monitor has the 'roving horizontal lines' problem, as set out in the man page for XFree86Config (about halfway down, under the 'monitor' section).

I read that the fix for this is to manually specify a 'modeline' in /etc/X11/XF86Config, adjusting manually one of the values therein - the only problem was that when I did so, following the example given me by a previous log given by the X server, it gave me an error.

It told me that the 'virtual height' of the monitor was set to 0, when the minimum required by the monitor was '128'. I don't understand what this 'virtual height' is, and especially how on earth my setting this 'modeline' - which was all to do with horizontal and vertical refresh rates and 'dot clocks' and 'sync starts' (none of which I can either understand or find explanation for anywhere on the internet or amongst the XFree86 man pages or website) - had anything to do with it.

My distro is RHL 9 (Shrike) pretty much out of the box, if that is any help. I can't get my hands on the X server log right now, but I will happily produce it in all its 'glory' if it could be useful in solving this problem.
 
  


Reply


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
multiple horizontal lines crossing screen when I startx lobo78 Linux - Newbie 4 12-09-2007 10:54 PM
Monitor Problems - horizontal lines across entire screen Daddio Linux - Hardware 5 02-10-2005 05:34 PM
Horizontal Lines in Photos on HP 722c w/ CUPS rignes Linux - Hardware 0 10-11-2004 05:37 PM
Faint horizontal rolling lines sleepindawg Mandriva 2 07-05-2004 12:51 AM
horizontal lines on screen? svar Linux - General 8 07-12-2003 10:53 AM


All times are GMT -5. The time now is 10:10 AM.

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