LCD monitor with DVI in Linux

pontifikas · Posted: Sun Jan 04, 2004 1:01 pm Post subject: LCD monitor with DVI in Linux

I've just bought my new LCD Monitor
A Hitachi CML174SX.
Im running under an ATI Radeon 9100.
I use DVI in windblows and it works great.
But in Linux, although I get the notion tha the Xserver is up, the monitor goes black and off.
I've run fglrxconfig and chosen the rates discribed in my monitors manual but it doesn't work again.

What should I do?
Thank you.
_________________
Crimes against humanity??Dunno!!Maybe that chimp-face guy over there can help you.
Ehrr...don't push him hard though.He's kinda slow.

think4urs11 · Posted: Sun Jan 04, 2004 1:28 pm Post subject:

Maybe this helps out (the option has to be set inside the "Device" section)

# Option "ForceCRT2Type":
# This option selects the CRT2 output device type and is only useful
# on systems containing a video bridge (such as most laptops).
# Available options are:
# "TV" (if TV connector present),
# "LCD" alias "DVI-D" (if LCD panel present),
# "VGA" alias "DVI-A" (secondary VGA; use this only if your machine
# has a secondary VGA connector or a DVI-I connector
# The VGA plug on your laptop is CRT1!)
# "NONE" (this will switch off CRT2). You might want to use "NONE" for
# using higher resolutions than your LCD panel supports when
# connected to an external VGA.
# "COMPOSITE" (30x bridge only) Force TV to use cvbs connector
# "SVIDEO" (30x bridge only) Force TV to use SVHS connector
# "SCART" (30x bridge only) Force TV to use SCART connector

HTH
T.
_________________
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pontifikas · Posted: Mon Jan 05, 2004 8:23 pm Post subject:

I dont see such thing in my XF86Config.And there is no section named just
"device" section.Can you be more specific?
Should I put it manualy?
_________________
Crimes against humanity??Dunno!!Maybe that chimp-face guy over there can help you.
Ehrr...don't push him hard though.He's kinda slow.

pontifikas · Posted: Sat Jan 24, 2004 11:53 am Post subject:

I write to make this topic soar again.
Please if someone has managed to make his LCD monitor run with DVI using an ATI drivers please answer!!!!!
I'm desperate

_________________
Crimes against humanity??Dunno!!Maybe that chimp-face guy over there can help you.
Ehrr...don't push him hard though.He's kinda slow.

ludwigvan · n00b Joined: 09 Jan 2004 Posts: 4

delvit · n00b Joined: 24 Sep 2003 Posts: 15

The ATI drivers flgrx sux BIG TIME. However, only with those drivers I'm able to run on DVI. I managed to run on analog with free "radeon" drivers without any problems, however, when I swichted to DVI I couldn't start Xserver

. So I'm stuck with f* ATI drivers that don't work as they should (during mplayer running the screen is scrabbled time to time) and such.
delvit

asiobob · Posted: Tue Feb 24, 2004 12:08 pm Post subject:

hmmm,

I'm posting this message from the same model LCD monitor as yours.
2048 by 1024 res on DVI everything is fine. I've installed both mandrake and gentoo uising DVI and it works great.

Note I have a nvidia card and nvidia drivers.
If you want my XF86Config reply back

Insanity5902 · Posted: Tue Feb 24, 2004 12:23 pm Post subject:

I would like to see your XF86Config. I just got a dell 17" widescreen LCD TV on my gentoo box and now it flickers every now and then.

asiobob · Posted: Tue Feb 24, 2004 12:37 pm Post subject:

joemc91 · n00b Joined: 04 Feb 2004 Posts: 38

I had trouble getting my ATI 8500 to display to my lcd on dvi as well.
1: Make sure that the lcd's native resolution is the only resolution allowed to be used, so no 640x480. This may be unique to my monitor, but if I used anything other than native, it was absolutely unreadable.
2: Find the line: Option "Monitor Layout" and chage the setting to "TMDS", that'll force output to the DVI port. Hope this helps!

pontifikas · Posted: Wed Feb 25, 2004 11:58 am Post subject:

@ASIO BOB
Thanks for your interest man but you see thats the issue.NVIDIA drivers do support DVI while ATI's not(at least not in all circumstances).I've been searching through out the web for almost 2 months and I've met too many people having the same problem and, strangely, enough people that managed to get DVI first time.You would be suprised to see how many configuration combinations I've tried(kernels,X's,drivers,XF86Configs)

@delvit
I'm surprised with what you say about the "radeon" driver.The Xfree driver is the only one providing me with DVI, but I dont use it because it is slightly slow but slow enough for a gamer to reject it.
I've written a small how-to in order to get it working.

@joemc91
That wont work.You see the problem is that the driver does not recognize the DVI port.Here is the evidence: