No valid modes found while starting X

[Jeremy Huddleston]

You might have better luck with a better supported video card... that is to say that nobody has significantly touched the siliconmotion driver in a few years.

You're also on an almost 2 year old distro and 2 year old X server release...

On Nov 29, 2011, at 6:41 AM, Caio Ricci wrote:

> Hello,
> 
>   I am trying to set  a multi-seat station under Kubuntu 10.04, so i'm
> starting from the basics, starting two separate X servers in a station
> with two videocards.   In my xorg.conf  i have two ServerLayouts.
> If i try to start my offboard layout with "startx -- :1 -layout seat 1"  I
> get some error saying there were no screens found.
> 
> Whitin the log, i can see it tried to load using different modes :
> 
> (II) SMI(0): Output LVDS using monitor section Monitor1
> (II) SMI(0): Not using mode "1280x1024" (vrefresh out of range)
> (II) SMI(0): Not using mode "128x1032" (bad mode clock/interlace/doublescan)
> (II) SMI(0): Not using default mode "640x350" (vrefresh out of range)
> ...
> ...
> ...
> (II) SMI(0): Not using default mode "1024x768" (doublescan mode not
> supported)
> (II) SMI(0): Not using default mode "2048x1536" (vrefresh out of range)
> (II) SMI(0): Not using default mode "1024x768" (doublescan mode not
> supported)
> (II) SMI(0): No remaining probed modes for output LVDS
> 
> with the following error :
> 
> (II) SMI(0): Output LVDS connected
> (WW) SMI(0): Unable to find initial modes
> (EE) SMI(0): Output LVDS enabled but has no modes
> (EE) SMI(0): No valid modes found
> (II) UnloadModule: "siliconmotion"
> (EE) Screen(s) found, but none have a usable configuration.
> 
> This same config file was working good yesterday. I don't understand what
> is the problem. In the log i could also find this :
> 
> (II) SMI(0): TFT Panel Size = 128x1032
> 
> I think this is the main reason of my problem, but can someone with more
> experience confirm? Or point what else might be a problem? I provided below
> all of the info i could think about.
> 
> Thanks in advance.
> [ ]'s
> 
> Full xorg.1.log :
> http://pastebin.com/e1q3XxdH
> 
> Relevant lspci and xorg.conf:
> http://pastebin.com/RxRAaDz7
> 
> I am following this website guideline, its mostly the same as any other
> multi-seat guide i could find.
> https://www.cs.drexel.edu/node/17042
> 
> I am using the  package xf86-video-siliconmotion  found in this repo:
> http://cgit.freedesktop.org/xorg/driver/xf86-video-siliconmotion/log/?h=master
> More specifically this version
> http://cgit.freedesktop.org/xorg/driver/xf86-video-siliconmotion/tag/?id=xf86-video-siliconmotion-1.7.4
> I can't use the last version because of the xorg-macros, it requires a
> newer version, which i couldnt update.
>